Visualization of a vascular system after intravenous injection of a fluorescein solution. The images may be photographed or televised. It is used especially in studying the retinal and uveal vasculature.
A phthalic indicator dye that appears yellow-green in normal tear film and bright green in a more alkaline medium such as the aqueous humor.
The concave interior of the eye, consisting of the retina, the choroid, the sclera, the optic disk, and blood vessels, seen by means of the ophthalmoscope. (Cline et al., Dictionary of Visual Science, 4th ed)
A family of spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one derivatives. These are used as dyes, as indicators for various metals, and as fluorescent labels in immunoassays.
Radiography of blood vessels after injection of a contrast medium.
A pathological process consisting of the formation of new blood vessels in the CHOROID.
The blood vessels which supply and drain the RETINA.
Radiography of the vascular system of the heart muscle after injection of a contrast medium.
The thin, highly vascular membrane covering most of the posterior of the eye between the RETINA and SCLERA.
Non-invasive method of vascular imaging and determination of internal anatomy without injection of contrast media or radiation exposure. The technique is used especially in CEREBRAL ANGIOGRAPHY as well as for studies of other vascular structures.
Clarity or sharpness of OCULAR VISION or the ability of the eye to see fine details. Visual acuity depends on the functions of RETINA, neuronal transmission, and the interpretative ability of the brain. Normal visual acuity is expressed as 20/20 indicating that one can see at 20 feet what should normally be seen at that distance. Visual acuity can also be influenced by brightness, color, and contrast.
Radiography of the vascular system of the brain after injection of a contrast medium.
An imaging method using LASERS that is used for mapping subsurface structure. When a reflective site in the sample is at the same optical path length (coherence) as the reference mirror, the detector observes interference fringes.
The use of green light-producing LASERS to stop bleeding. The green light is selectively absorbed by HEMOGLOBIN, thus triggering BLOOD COAGULATION.
Disorders of the choroid including hereditary choroidal diseases, neoplasms, and other abnormalities of the vascular layer of the uvea.
A tricarbocyanine dye that is used diagnostically in liver function tests and to determine blood volume and cardiac output.
A method of delineating blood vessels by subtracting a tissue background image from an image of tissue plus intravascular contrast material that attenuates the X-ray photons. The background image is determined from a digitized image taken a few moments before injection of the contrast material. The resulting angiogram is a high-contrast image of the vessel. This subtraction technique allows extraction of a high-intensity signal from the superimposed background information. The image is thus the result of the differential absorption of X-rays by different tissues.
Degenerative changes in the RETINA usually of older adults which results in a loss of vision in the center of the visual field (the MACULA LUTEA) because of damage to the retina. It occurs in dry and wet forms.
An oval area in the retina, 3 to 5 mm in diameter, usually located temporal to the posterior pole of the eye and slightly below the level of the optic disk. It is characterized by the presence of a yellow pigment diffusely permeating the inner layers, contains the fovea centralis in its center, and provides the best phototropic visual acuity. It is devoid of retinal blood vessels, except in its periphery, and receives nourishment from the choriocapillaris of the choroid. (From Cline et al., Dictionary of Visual Science, 4th ed)
Examination of the interior of the eye with an ophthalmoscope.
Fluid accumulation in the outer layer of the MACULA LUTEA that results from intraocular or systemic insults. It may develop in a diffuse pattern where the macula appears thickened or it may acquire the characteristic petaloid appearance referred to as cystoid macular edema. Although macular edema may be associated with various underlying conditions, it is most commonly seen following intraocular surgery, venous occlusive disease, DIABETIC RETINOPATHY, and posterior segment inflammatory disease. (From Survey of Ophthalmology 2004; 49(5) 470-90)
An area approximately 1.5 millimeters in diameter within the macula lutea where the retina thins out greatly because of the oblique shifting of all layers except the pigment epithelium layer. It includes the sloping walls of the fovea (clivus) and contains a few rods in its periphery. In its center (foveola) are the cones most adapted to yield high visual acuity, each cone being connected to only one ganglion cell. (Cline et al., Dictionary of Visual Science, 4th ed)
Blockage of the RETINAL VEIN. Those at high risk for this condition include patients with HYPERTENSION; DIABETES MELLITUS; ATHEROSCLEROSIS; and other CARDIOVASCULAR DISEASES.
Disease of the RETINA as a complication of DIABETES MELLITUS. It is characterized by the progressive microvascular complications, such as ANEURYSM, interretinal EDEMA, and intraocular PATHOLOGIC NEOVASCULARIZATION.
Diseases of the uvea.
Sudden ISCHEMIA in the RETINA due to blocked blood flow through the CENTRAL RETINAL ARTERY or its branches leading to sudden complete or partial loss of vision, respectively, in the eye.
Central retinal vein and its tributaries. It runs a short course within the optic nerve and then leaves and empties into the superior ophthalmic vein or cavernous sinus.
The transparent, semigelatinous substance that fills the cavity behind the CRYSTALLINE LENS of the EYE and in front of the RETINA. It is contained in a thin hyaloid membrane and forms about four fifths of the optic globe.
Inflammation of the choroid.
The administration of substances into the VITREOUS BODY of the eye with a hypodermic syringe.
Recording of electric potentials in the retina after stimulation by light.
Bleeding from the vessels of the retina.
The ten-layered nervous tissue membrane of the eye. It is continuous with the OPTIC NERVE and receives images of external objects and transmits visual impulses to the brain. Its outer surface is in contact with the CHOROID and the inner surface with the VITREOUS BODY. The outer-most layer is pigmented, whereas the inner nine layers are transparent.
Central retinal artery and its branches. It arises from the ophthalmic artery, pierces the optic nerve and runs through its center, enters the eye through the porus opticus and branches to supply the retina.
Formation of new blood vessels originating from the retinal veins and extending along the inner (vitreal) surface of the retina.
A visual impairment characterized by the accumulation of fluid under the retina through a defect in the retinal pigment epithelium.
Fluorescent probe capable of being conjugated to tissue and proteins. It is used as a label in fluorescent antibody staining procedures as well as protein- and amino acid-binding techniques.
The coagulation of tissue by an intense beam of light, including laser (LASER COAGULATION). In the eye it is used in the treatment of retinal detachments, retinal holes, aneurysms, hemorrhages, and malignant and benign neoplasms. (Dictionary of Visual Science, 3d ed)
Devices for examining the interior of the eye, permitting the clear visualization of the structures of the eye at any depth. (UMDNS, 1999)
Method of making images on a sensitized surface by exposure to light or other radiant energy.
Therapy using oral or topical photosensitizing agents with subsequent exposure to light.
Separation of the inner layers of the retina (neural retina) from the pigment epithelium. Retinal detachment occurs more commonly in men than in women, in eyes with degenerative myopia, in aging and in aphakia. It may occur after an uncomplicated cataract extraction, but it is seen more often if vitreous humor has been lost during surgery. (Dorland, 27th ed; Newell, Ophthalmology: Principles and Concepts, 7th ed, p310-12).
Permanent dilation of preexisting blood vessels (CAPILLARIES; ARTERIOLES; VENULES) creating small focal red lesions, most commonly in the skin or mucous membranes. It is characterized by the prominence of skin blood vessels, such as vascular spiders.
Inflammation of the retinal vasculature with various causes including infectious disease; LUPUS ERYTHEMATOSUS, SYSTEMIC; MULTIPLE SCLEROSIS; BEHCET SYNDROME; and CHORIORETINITIS.
The single layer of pigment-containing epithelial cells in the RETINA, situated closely to the tips (outer segments) of the RETINAL PHOTORECEPTOR CELLS. These epithelial cells are macroglia that perform essential functions for the photoreceptor cells, such as in nutrient transport, phagocytosis of the shed photoreceptor membranes, and ensuring retinal attachment.
Ocular disorders attendant upon non-ocular disease or injury.
Diseases, dysfunctions, or disorders of or located in the iris.
An optical source that emits photons in a coherent beam. Light Amplification by Stimulated Emission of Radiation (LASER) is brought about using devices that transform light of varying frequencies into a single intense, nearly nondivergent beam of monochromatic radiation. Lasers operate in the infrared, visible, ultraviolet, or X-ray regions of the spectrum.
Colloid or hyaline bodies lying beneath the retinal pigment epithelium. They may occur either secondary to changes in the choroid that affect the pigment epithelium or as an autosomal dominant disorder of the retinal pigment epithelium.
Exudates are fluids, CELLS, or other cellular substances that are slowly discharged from BLOOD VESSELS usually from inflamed tissues. Transudates are fluids that pass through a membrane or squeeze through tissue or into the EXTRACELLULAR SPACE of TISSUES. Transudates are thin and watery and contain few cells or PROTEINS.
Small breaks in the elastin-filled tissue of the retina.
Chemicals and substances that impart color including soluble dyes and insoluble pigments. They are used in INKS; PAINTS; and as INDICATORS AND REAGENTS.
The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
The administration of substances into the eye with a hypodermic syringe.
Drugs that are pharmacologically inactive but when exposed to ultraviolet radiation or sunlight are converted to their active metabolite to produce a beneficial reaction affecting the diseased tissue. These compounds can be administered topically or systemically and have been used therapeutically to treat psoriasis and various types of neoplasms.
Tomography using x-ray transmission and a computer algorithm to reconstruct the image.
Introduction of substances into the body using a needle and syringe.
The layer of pigment-containing epithelial cells in the RETINA; the CILIARY BODY; and the IRIS in the eye.
Tumors of the choroid; most common intraocular tumors are malignant melanomas of the choroid. These usually occur after puberty and increase in incidence with advancing age. Most malignant melanomas of the uveal tract develop from benign melanomas (nevi).
Hemorrhage into the VITREOUS BODY.
A rare genetic disorder characterized by partial or complete absence of the CORPUS CALLOSUM, resulting in infantile spasms, MENTAL RETARDATION, and lesions of the RETINA or OPTIC NERVE.
A rare disorder consisting of microangiopathy of brain, retina, and inner ear ARTERIOLES. It is characterized by the clinical triad of encephalopathy, BRANCH RETINAL ARTERY OCCLUSION and VERTIGO/hearing loss.
Autosomal dominant hereditary maculopathy with childhood-onset accumulation of LIPOFUSION in RETINAL PIGMENT EPITHELIUM. Affected individuals develop progressive central acuity loss, and distorted vision (METAMORPHOPSIA). It is associated with mutations in bestrophin, a chloride channel.
Inflammation of the choroid in which the sensory retina becomes edematous and opaque. The inflammatory cells and exudate may burst through the sensory retina to cloud the vitreous body.
An exudate between the RETINA and CHOROID from various sources including the vitreous cavity, SUBARACHNOID SPACE, or abnormal vessels.
Binary classification measures to assess test results. Sensitivity or recall rate is the proportion of true positives. Specificity is the probability of correctly determining the absence of a condition. (From Last, Dictionary of Epidemiology, 2d ed)
Agents and endogenous substances that antagonize or inhibit the development of new blood vessels.
Observation of a population for a sufficient number of persons over a sufficient number of years to generate incidence or mortality rates subsequent to the selection of the study group.
A group of compounds containing the porphin structure, four pyrrole rings connected by methine bridges in a cyclic configuration to which a variety of side chains are attached. The nature of the side chain is indicated by a prefix, as uroporphyrin, hematoporphyrin, etc. The porphyrins, in combination with iron, form the heme component in biologically significant compounds such as hemoglobin and myoglobin.
Substances used to allow enhanced visualization of tissues.
A bright bluish pink compound that has been used as a dye, biological stain, and diagnostic aid.
Swelling of the OPTIC DISK, usually in association with increased intracranial pressure, characterized by hyperemia, blurring of the disk margins, microhemorrhages, blind spot enlargement, and engorgement of retinal veins. Chronic papilledema may cause OPTIC ATROPHY and visual loss. (Miller et al., Clinical Neuro-Ophthalmology, 4th ed, p175)
The inner layer of CHOROID, also called the lamina basalis choroideae, located adjacent to the RETINAL PIGMENT EPITHELIUM; (RPE) of the EYE. It is a membrane composed of the basement membranes of the choriocapillaris ENDOTHELIUM and that of the RPE. The membrane stops at the OPTIC NERVE, as does the RPE.
Studies used to test etiologic hypotheses in which inferences about an exposure to putative causal factors are derived from data relating to characteristics of persons under study or to events or experiences in their past. The essential feature is that some of the persons under study have the disease or outcome of interest and their characteristics are compared with those of unaffected persons.
A form of RETINAL DEGENERATION in which abnormal CHOROIDAL NEOVASCULARIZATION occurs under the RETINA and MACULA LUTEA, causing bleeding and leaking of fluid. This leads to bulging and or lifting of the macula and the distortion or destruction of central vision.
The property of blood capillary ENDOTHELIUM that allows for the selective exchange of substances between the blood and surrounding tissues and through membranous barriers such as the BLOOD-AIR BARRIER; BLOOD-AQUEOUS BARRIER; BLOOD-BRAIN BARRIER; BLOOD-NERVE BARRIER; BLOOD-RETINAL BARRIER; and BLOOD-TESTIS BARRIER. Small lipid-soluble molecules such as carbon dioxide and oxygen move freely by diffusion. Water and water-soluble molecules cannot pass through the endothelial walls and are dependent on microscopic pores. These pores show narrow areas (TIGHT JUNCTIONS) which may limit large molecule movement.
Measurement of light given off by fluorescein in order to assess the integrity of various ocular barriers. The method is used to investigate the blood-aqueous barrier, blood-retinal barrier, aqueous flow measurements, corneal endothelial permeability, and tear flow dynamics.
Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease.
Congenital anomaly in which some of the structures of the eye are absent due to incomplete fusion of the fetal intraocular fissure during gestation.
The minute vessels that connect the arterioles and venules.
Diseases affecting the eye.
An esterified form of TRIAMCINOLONE. It is an anti-inflammatory glucocorticoid used topically in the treatment of various skin disorders. Intralesional, intramuscular, and intra-articular injections are also administered under certain conditions.
Presence of an intraocular lens after cataract extraction.
The measurement of visualization by radiation of any organ after a radionuclide has been injected into its blood supply. It is used to diagnose heart, liver, lung, and other diseases and to measure the function of those organs, except renography, for which RADIOISOTOPE RENOGRAPHY is available.
Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.
Abnormal outpouching in the wall of intracranial blood vessels. Most common are the saccular (berry) aneurysms located at branch points in CIRCLE OF WILLIS at the base of the brain. Vessel rupture results in SUBARACHNOID HEMORRHAGE or INTRACRANIAL HEMORRHAGES. Giant aneurysms (>2.5 cm in diameter) may compress adjacent structures, including the OCULOMOTOR NERVE. (From Adams et al., Principles of Neurology, 6th ed, p841)
Excessive axial myopia associated with complications (especially posterior staphyloma and CHOROIDAL NEOVASCULARIZATION) that can lead to BLINDNESS.
The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the canal of Schlemm. (From Cline et al., Dictionary of Visual Science, 4th ed)
A scientific tool based on ULTRASONOGRAPHY and used not only for the observation of microstructure in metalwork but also in living tissue. In biomedical application, the acoustic propagation speed in normal and abnormal tissues can be quantified to distinguish their tissue elasticity and other properties.
The portion of the optic nerve seen in the fundus with the ophthalmoscope. It is formed by the meeting of all the retinal ganglion cell axons as they enter the optic nerve.
Perforations through the whole thickness of the retina including the macula as the result of inflammation, trauma, degeneration, etc. The concept includes retinal breaks, tears, dialyses, and holes.
The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.
Removal of the whole or part of the vitreous body in treating endophthalmitis, diabetic retinopathy, retinal detachment, intraocular foreign bodies, and some types of glaucoma.
Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.
Visual impairments limiting one or more of the basic functions of the eye: visual acuity, dark adaptation, color vision, or peripheral vision. These may result from EYE DISEASES; OPTIC NERVE DISEASES; VISUAL PATHWAY diseases; OCCIPITAL LOBE diseases; OCULAR MOTILITY DISORDERS; and other conditions (From Newell, Ophthalmology: Principles and Concepts, 7th ed, p132).
Pathological processes of CORONARY ARTERIES that may derive from a congenital abnormality, atherosclerotic, or non-atherosclerotic cause.
Method of measuring and mapping the scope of vision, from central to peripheral of each eye.
Antibodies from non-human species whose protein sequences have been modified to make them nearly identical with human antibodies. If the constant region and part of the variable region are replaced, they are called humanized. If only the constant region is modified they are called chimeric. INN names for humanized antibodies end in -zumab.
The process of generating three-dimensional images by electronic, photographic, or other methods. For example, three-dimensional images can be generated by assembling multiple tomographic images with the aid of a computer, while photographic 3-D images (HOLOGRAPHY) can be made by exposing film to the interference pattern created when two laser light sources shine on an object.
The total area or space visible in a person's peripheral vision with the eye looking straightforward.
A technique of inputting two-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer.
A syndrome characterized by bilateral granulomatous UVEITIS with IRITIS and secondary GLAUCOMA, premature ALOPECIA, symmetrical VITILIGO, poliosis circumscripta (a strand of depigmented hair), HEARING DISORDERS, and meningeal signs (neck stiffness and headache). Examination of the cerebrospinal fluid reveals a pattern consistent with MENINGITIS, ASEPTIC. (Adams et al., Principles of Neurology, 6th ed, p748; Surv Ophthalmol 1995 Jan;39(4):265-292)
Narrowing or constriction of a coronary artery.
Surgery performed on the eye or any of its parts.
Naturally occurring or experimentally induced animal diseases with pathological processes sufficiently similar to those of human diseases. They are used as study models for human diseases.
Computed tomography where there is continuous X-ray exposure to the patient while being transported in a spiral or helical pattern through the beam of irradiation. This provides improved three-dimensional contrast and spatial resolution compared to conventional computed tomography, where data is obtained and computed from individual sequential exposures.
A hypoperfusion of the BLOOD through an organ or tissue caused by a PATHOLOGIC CONSTRICTION or obstruction of its BLOOD VESSELS, or an absence of BLOOD CIRCULATION.
The original member of the family of endothelial cell growth factors referred to as VASCULAR ENDOTHELIAL GROWTH FACTORS. Vascular endothelial growth factor-A was originally isolated from tumor cells and referred to as "tumor angiogenesis factor" and "vascular permeability factor". Although expressed at high levels in certain tumor-derived cells it is produced by a wide variety of cell types. In addition to stimulating vascular growth and vascular permeability it may play a role in stimulating VASODILATION via NITRIC OXIDE-dependent pathways. Alternative splicing of the mRNA for vascular endothelial growth factor A results in several isoforms of the protein being produced.
Agents that emit light after excitation by light. The wave length of the emitted light is usually longer than that of the incident light. Fluorochromes are substances that cause fluorescence in other substances, i.e., dyes used to mark or label other compounds with fluorescent tags.
Organic derivatives of thiocyanic acid which contain the general formula R-SCN.
Elements of limited time intervals, contributing to particular results or situations.
A bilateral retinopathy occurring in premature infants treated with excessively high concentrations of oxygen, characterized by vascular dilatation, proliferation, and tortuosity, edema, and retinal detachment, with ultimate conversion of the retina into a fibrous mass that can be seen as a dense retrolental membrane. Usually growth of the eye is arrested and may result in microophthalmia, and blindness may occur. (Dorland, 27th ed)
A species of the genus MACACA which typically lives near the coast in tidal creeks and mangrove swamps primarily on the islands of the Malay peninsula.
A method of hemostasis utilizing various agents such as Gelfoam, silastic, metal, glass, or plastic pellets, autologous clot, fat, and muscle as emboli. It has been used in the treatment of spinal cord and INTRACRANIAL ARTERIOVENOUS MALFORMATIONS, renal arteriovenous fistulas, gastrointestinal bleeding, epistaxis, hypersplenism, certain highly vascular tumors, traumatic rupture of blood vessels, and control of operative hemorrhage.
A value equal to the total volume flow divided by the cross-sectional area of the vascular bed.
Congenital vascular anomalies in the brain characterized by direct communication between an artery and a vein without passing through the CAPILLARIES. The locations and size of the shunts determine the symptoms including HEADACHES; SEIZURES; STROKE; INTRACRANIAL HEMORRHAGES; mass effect; and vascular steal effect.
Ischemic injury to the OPTIC NERVE which usually affects the OPTIC DISK (optic neuropathy, anterior ischemic) and less frequently the retrobulbar portion of the nerve (optic neuropathy, posterior ischemic). The injury results from occlusion of arterial blood supply which may result from TEMPORAL ARTERITIS; ATHEROSCLEROSIS; COLLAGEN DISEASES; EMBOLISM; DIABETES MELLITUS; and other conditions. The disease primarily occurs in the sixth decade or later and presents with the sudden onset of painless and usually severe monocular visual loss. Anterior ischemic optic neuropathy also features optic disk edema with microhemorrhages. The optic disk appears normal in posterior ischemic optic neuropathy. (Glaser, Neuro-Ophthalmology, 2nd ed, p135)
In screening and diagnostic tests, the probability that a person with a positive test is a true positive (i.e., has the disease), is referred to as the predictive value of a positive test; whereas, the predictive value of a negative test is the probability that the person with a negative test does not have the disease. Predictive value is related to the sensitivity and specificity of the test.
Inflammation of part or all of the uvea, the middle (vascular) tunic of the eye, and commonly involving the other tunics (sclera and cornea, and the retina). (Dorland, 27th ed)
A non-ionic, water-soluble contrast agent which is used in myelography, arthrography, nephroangiography, arteriography, and other radiological procedures.
A retrogressive pathological change in the retina, focal or generalized, caused by genetic defects, inflammation, trauma, vascular disease, or aging. Degeneration affecting predominantly the macula lutea of the retina is MACULAR DEGENERATION. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p304)
Branch of the common carotid artery which supplies the anterior part of the brain, the eye and its appendages, the forehead and nose.
Hereditary, progressive degeneration of the neuroepithelium of the retina characterized by night blindness and progressive contraction of the visual field.
The species Oryctolagus cuniculus, in the family Leporidae, order LAGOMORPHA. Rabbits are born in burrows, furless, and with eyes and ears closed. In contrast with HARES, rabbits have 22 chromosome pairs.
The flow of BLOOD through or around an organ or region of the body.
Types of spiral computed tomography technology in which multiple slices of data are acquired simultaneously improving the resolution over single slice acquisition technology.
Specialized PHOTOTRANSDUCTION neurons in the vertebrates, such as the RETINAL ROD CELLS and the RETINAL CONE CELLS. Non-visual photoreceptor neurons have been reported in the deep brain, the PINEAL GLAND and organs of the circadian system.
Small-scale tests of methods and procedures to be used on a larger scale if the pilot study demonstrates that these methods and procedures can work.
The veins and arteries of the HEART.
Pathological processes which result in the partial or complete obstruction of ARTERIES. They are characterized by greatly reduced or absence of blood flow through these vessels. They are also known as arterial insufficiency.
The first branch of the SUBCLAVIAN ARTERY with distribution to muscles of the NECK; VERTEBRAE; SPINAL CORD; CEREBELLUM; and interior of the CEREBRUM.
The 2nd cranial nerve which conveys visual information from the RETINA to the brain. The nerve carries the axons of the RETINAL GANGLION CELLS which sort at the OPTIC CHIASM and continue via the OPTIC TRACTS to the brain. The largest projection is to the lateral geniculate nuclei; other targets include the SUPERIOR COLLICULI and the SUPRACHIASMATIC NUCLEI. Though known as the second cranial nerve, it is considered part of the CENTRAL NERVOUS SYSTEM.
An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.
An effective non-ionic, water-soluble contrast agent which is used in myelography, arthrography, nephroangiography, arteriography, and other radiographic procedures. Its low systemic toxicity is the combined result of low chemotoxicity and low osmolality.
Devices that provide support for tubular structures that are being anastomosed or for body cavities during skin grafting.
A characteristic symptom complex.
Computer systems or networks designed to provide radiographic interpretive information.
Decrease in the size of a cell, tissue, organ, or multiple organs, associated with a variety of pathological conditions such as abnormal cellular changes, ischemia, malnutrition, or hormonal changes.
Bleeding into the intracranial or spinal SUBARACHNOID SPACE, most resulting from INTRACRANIAL ANEURYSM rupture. It can occur after traumatic injuries (SUBARACHNOID HEMORRHAGE, TRAUMATIC). Clinical features include HEADACHE; NAUSEA; VOMITING, nuchal rigidity, variable neurological deficits and reduced mental status.
The tearing or bursting of the weakened wall of the aneurysmal sac, usually heralded by sudden worsening pain. The great danger of a ruptured aneurysm is the large amount of blood spilling into the surrounding tissues and cavities, causing HEMORRHAGIC SHOCK.
A group of glucose polymers made by certain bacteria. Dextrans are used therapeutically as plasma volume expanders and anticoagulants. They are also commonly used in biological experimentation and in industry for a wide variety of purposes.
A group of CORTICOSTEROIDS that affect carbohydrate metabolism (GLUCONEOGENESIS, liver glycogen deposition, elevation of BLOOD SUGAR), inhibit ADRENOCORTICOTROPIC HORMONE secretion, and possess pronounced anti-inflammatory activity. They also play a role in fat and protein metabolism, maintenance of arterial blood pressure, alteration of the connective tissue response to injury, reduction in the number of circulating lymphocytes, and functioning of the central nervous system.
The fluid secreted by the lacrimal glands. This fluid moistens the CONJUNCTIVA and CORNEA.
The failure by the observer to measure or identify a phenomenon accurately, which results in an error. Sources for this may be due to the observer's missing an abnormality, or to faulty technique resulting in incorrect test measurement, or to misinterpretation of the data. Two varieties are inter-observer variation (the amount observers vary from one another when reporting on the same material) and intra-observer variation (the amount one observer varies between observations when reporting more than once on the same material).
Injections made into a vein for therapeutic or experimental purposes.
The condition of an anatomical structure's being constricted beyond normal dimensions.
Congenital, inherited, or acquired abnormalities involving ARTERIES; VEINS; or venous sinuses in the BRAIN; SPINAL CORD; and MENINGES.
Localized or diffuse reduction in blood flow through the vertebrobasilar arterial system, which supplies the BRAIN STEM; CEREBELLUM; OCCIPITAL LOBE; medial TEMPORAL LOBE; and THALAMUS. Characteristic clinical features include SYNCOPE; lightheadedness; visual disturbances; and VERTIGO. BRAIN STEM INFARCTIONS or other BRAIN INFARCTION may be associated.
Narrowing or stricture of any part of the CAROTID ARTERIES, most often due to atherosclerotic plaque formation. Ulcerations may form in atherosclerotic plaques and induce THROMBUS formation. Platelet or cholesterol emboli may arise from stenotic carotid lesions and induce a TRANSIENT ISCHEMIC ATTACK; CEREBROVASCULAR ACCIDENT; or temporary blindness (AMAUROSIS FUGAX). (From Adams et al., Principles of Neurology, 6th ed, pp 822-3)
The pressure of the fluids in the eye.
Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women. Filamentary keratitis or erosion of the conjunctival and corneal epithelium may be caused by these disorders. Sensation of the presence of a foreign body in the eye and burning of the eyes may occur.
Improvement in the quality of an x-ray image by use of an intensifying screen, tube, or filter and by optimum exposure techniques. Digital processing methods are often employed.
An abnormal direct communication between an artery and a vein without passing through the CAPILLARIES. An A-V fistula usually leads to the formation of a dilated sac-like connection, arteriovenous aneurysm. The locations and size of the shunts determine the degree of effects on the cardiovascular functions such as BLOOD PRESSURE and HEART RATE.
Photosensitive afferent neurons located primarily within the FOVEA CENTRALIS of the MACULA LUTEA. There are three major types of cone cells (red, blue, and green) whose photopigments have different spectral sensitivity curves. Retinal cone cells operate in daylight vision (at photopic intensities) providing color recognition and central visual acuity.
The escape of diagnostic or therapeutic material from the vessel into which it is introduced into the surrounding tissue or body cavity.
The use of ultrasound to guide minimally invasive surgical procedures such as needle ASPIRATION BIOPSY; DRAINAGE; etc. Its widest application is intravascular ultrasound imaging but it is useful also in urology and intra-abdominal conditions.
The record of descent or ancestry, particularly of a particular condition or trait, indicating individual family members, their relationships, and their status with respect to the trait or condition.
The arterial blood vessels supplying the CEREBRUM.

Variations in acute multifocal histoplasmic choroiditis in the primate. (1/1800)

Experimental histoplasmic choroiditis was produced in primates by intracarotid injections of living H. capsulatum organisms. The severity of the choroiditis varied with inoculum size, as well as with site of injection (common carotid vs. internal carotid artery). A reproducible model of histoplasmic choroiditis in primates was produced with an internal carotid injection of 5,000 to 10,000 organisms/lb. The clinical and histopathological course of this acute choroiditis over the first 30 days is presented.  (+info)

Pigment epithelial windows and drusen: an animal model. (2/1800)

Aging rhesus monkeys, both controls and those undergoing long-term administration of investigational oral contraceptive steroids, developed widespread hyperfluorescent dots at the posterior pole. The dots were considered to represent drusen. Histologic (including electron microscopic) study showed the "drusen" in some of the animals to be almost exclusively pigment epithelial windows produced by a lipoidal degeneration of the pigment epithelial cells. The experiment provided a fortuitous model for direct correlation of clinical and histologic observations of myriad uniform, tiny, depigmented, hyperfluorescent, nonleaking spots at the level of the retinal pigment epithelium.  (+info)

In vivo significance of ICAM-1--dependent leukocyte adhesion in early corneal angiogenesis. (3/1800)

PURPOSE: Numerous investigations have stressed the significance of leukocytes in early angiogenesis. Leukocytes invade the cornea, and the location of their extravasation corresponds to the site of vessel ingrowth. The interactions between leukocytes and vascular endothelium are mediated by various proteins, including adhesion molecules such as intercellular adhesion molecule-1 (ICAM-1). In this study, the role of ICAM-1 during early corneal angiogenesis was evaluated in vivo. METHODS: Corneal neovascularization was induced in New Zealand White rabbits by use of intrastromal pellets containing 750 ng vascular endothelial growth factor (VEGF). The fluorescent dye rhodamine 6G was used to stain leukocytes in vivo. Leukocyte adhesion and vessel growth were quantified in vivo by high-resolution fluorescence angiography. To inhibit ICAM-1 interactions a microemulsion containing anti-ICAM-1 antibody was applied topically. RESULTS: Limbal vessels showed increased leukocyte adhesion 24 hours after pellet implantation: The number of rolling and sticking leukocytes was significantly increased compared with the number in control animals (P < 0.01). Treatment with anti-ICAM-1 antibody resulted in reduced leukocyte sticking and increased leukocyte rolling. The area covered by new blood vessels was significantly diminished in eyes treated with anti-ICAM-1 (P < 0.05). CONCLUSIONS: The results support the hypothesis that ICAM-1-mediated leukocyte adhesion is a key event in early angiogenesis. This model may serve for investigation of the significance of adhesion molecules by in vivo observation and quantification.  (+info)

Metabolic acidosis-induced retinopathy in the neonatal rat. (4/1800)

PURPOSE: Carbon dioxide (CO2)-induced retinopathy (CDIR) in the neonatal rat, analogous to human retinopathy of prematurity (ROP), was previously described by our group. In this model, it is possible that CO2-associated acidosis provides a biochemical mechanism for CDIR. Therefore, the effect of pure metabolic acidosis on the developing retinal vasculature of the neonatal rat was investigated. METHODS: A preliminary study of arterial blood pH was performed to confirm acidosis in our model. In neonatal rats with preplaced left carotid artery catheters, acute blood gas samples were taken 1 to 24 hours after gavage with either NH4Cl 1 millimole/100 g body weight or saline. In the subsequent formal retinopathy study, 150 newborn Sprague-Dawley rats were raised in litters of 25 and randomly assigned to be gavaged twice daily with either NH4Cl 1 millimole/100 g body weight (n = 75) or saline (n = 75) from day 2 to day 7. After 5 days of recovery, rats were killed, and retinal vasculature was assessed using fluorescein perfusion and ADPase staining techniques. RESULTS: In the preliminary pH study, the minimum pH after NH4Cl gavage was 7.10+/-0.10 at 3 hours (versus 7.37+/-0.03 in controls, mean +/- SD, P < 0.01). In the formal retinopathy study, preretinal neovascularization occurred in 36% of acidotic rats versus 5% of controls (P < 0.001). Acidotic rats showed growth retardation (final weight 16.5+/-3.0 g versus 20.2+/-2.6 g, P < 0.001). The ratio of vascularized to total retinal area was smaller in acidotic rats (94%+/-4% versus 96%+/-2%, P < 0.001). CONCLUSIONS: Metabolic acidosis alone induces neovascularization similar to ROP in the neonatal rat. This suggests a possible biochemical mechanism by which high levels of CO2 induce neovascularization and supports the suggestion that acidosis may be an independent risk factor for ROP.  (+info)

Idiopathic central serous chorioretinopathy. (5/1800)

Idiopathic central serous chorioretinopathy (ICSC) is usually seen in young males with Type A personality. Clinical evaluation of the macula with fundoscopy and biomicroscopy, coupled with fluorescein angiography establishes the diagnosis. Indocyanine green angiographic studies have reinformed that the basic pathology lies in choriocapillaries and retinal pigment epithelium. Most of the ICSC resolve completely in four months, and some of them could resolve early with direct photocoagulation of the leaking site. Oral steroids have no role, and could even cause an adverse reaction.  (+info)

Chronic retinal vein occlusion in glaucoma. (6/1800)

Asymptomatic chronic retinal vein occlusion that occurs in chronic simple glaucoma is described. The condition is characterized by marked elevation of retinal vein pressure with collateral vessels and vein loops at the optic disc in cases of central vein occlusion, or retinal veno-venous anastomoses along a horizontal line temporal and nasal to the disc in hemisphere vein occlusion. No patient had visible arterial changes, capillary closure, fluorescein leakage, or haemorrhages. The vein occlusion was not limited to "end stage" glaucoma. The role of increased intraocular pressure and glaucomatous enlargement of the optic cup with retinal vein distortion in the pathogenesis of the condition was stressed. Follow-up of these patients revealed persistence of the retinal vein occlusion shown by elevated retinal vein pressures. This would reduce effective perfusion of the inner retina and optic disc and may affect the long-term visual prognosis.  (+info)

De novo lesions in presumed ocular histoplasmosis-like syndrome. (7/1800)

Two patients with multifocal choroiditis similar or identical to POHS are presented. Colour photographs and fluorescein angiography document the occurrence of de novo lesions in the originally involved eye. The cases also demonstrate the development of new choroidal lesions within the originally involved eye, the early evolution of the "basic choroidal lesion", and the need for fluorescein angiography for visualizing the underlying choroidal lesion.  (+info)

The use of internal limiting membrane maculorrhexis in treatment of idiopathic macular holes. (8/1800)

The purpose of this study was to assess surgical results of internal limiting membrane (ILM) maculorrhexis in macular hole surgery. This study is a part of continuing prospective clinical trial of our team of researchers. Thirteen eyes of 13 patients with idiopathic macular hole underwent vitrectomy with the removal of posterior cortical vitreous, peeling of the macular ILM, and intraocular gas tamponade, followed by postoperative face-down positioning. The excised specimens were evaluated with transmission electron microscopy. Complete closure of the hole was observed in all 13 eyes (100% anatomic success rate). Visual improvement of 2 or more lines on ETDRS visual acuity chart was achieved in 11 (85%) of the 13 eyes. Six (54.5%) eyes attained visual acuity of 20/50 or better. Electron microscopy showed ILM in the removed specimens. ILM maculorrhexis is a promising new surgical approach to close idiopathic macular holes but requires further investigation and long-term evaluation.  (+info)

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To Study the correlation between fundus fluorescein angiography and optical coherence tomography patterns in clinically significant macular oedema
Purpose : Nano-materials have been used widely applied for medical research because of its small size in recent years, however it is a virgin area in the field of ophthalmology. We created a new Silver-oxides core-shell nanoprisms ([email protected] NPs) -Fluorescein isothiocyanate (FITC) that be excited the fluorescence signal by 488nm. The purpose of this study was to demonstrate Ag @oxides nanoprisms can be used as a new effective agent in fundus fluorescein angiography (FFA). Methods : Ag NPs were synthesized using a seed-mediated procedure. [email protected] NPs were prepared via a simple sol-gel route. The thickness of the oxides shell can be precisely tuned from 1 to 15 nm through changing the reaction time and amount of oxides sol-gel precursor. Cytotoxicity of Ag NP were tested in OCM-1 cells using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. OCM-1 cells were incubated with [email protected] NPs for 24 h and then imaged with the fluorescence microscope. Fundus of C57BL/6J mice were ...
To describe a wide array of peripheral vascular changes using fluorescein angiography in preterm neonates, without high risk characteristics for developing retinopathy of prematurity, that were exposed to high oxygen concentration. Retrospective, two center, case series. Newborns at two different hospitals with ≥1500 g or gestational age of ≥32 weeks, fluorescein angiography performed, and with high oxygen exposure without adequate control were included. 294 infants diagnosed with ROP were analyzed. Only 28 eyes from 14 patients with peripheral vascular abnormalities in older and heavier babies were included. Two distinct type of peripheral vascular changes were observed: group 1 or non-proliferative: areas of capillary non-perfusion along with widespread arteriovenous shunting between adjacent primary vessels, tortuosity of primary vessels, abnormal budding of tertiary vessels and capillaries, abnormal capillary tufts and absence of foveal avascular zone; group 2 or proliferative: all of the
Two patients with clinically unilateral Coats disease were imaged with fluorescein angiography during an examination under anesthesia. Both patients were found to have abnormal retinal vasculature in their contralateral eye. These findings may repre
FLUORESCEIN ANGIOGRAM OF EYE Photo essay at the hospital of Meaux (77), France. Department of ophtalmology. Mydriatic fundus camera to undertake a fundus oculi and a retinal angiography. On screen a diabetic retinopathy. - Stock Image C004/0835
Results Twelve infants with a variety of proliferative retinopathies underwent UWF-IV-FFA over a 7-month period. The mean age was 3.4 months (range 2-6 months) and the mean image acquisition time was 4 min (range 3-5). Pseudocolour fundus images and the venous, recirculation and late phases of UWF-IV-FFA were captured successfully in all infants (100%). Choroidal and arterial phases were captured in one (8.3%) and 10 (83.3%) infants, respectively. Image artefacts due to eyelashes and corneal desiccation occurred in nine (75%) and six (50%) infants, respectively. No adverse medical problems were noted.. ...
Fluorescein angiography Fluorescein angiography is a test which allows the blood vessels in the back of the eye to be photographed as a fluorescent dye is
Atlas of fluorescein angiography , Atlas of fluorescein angiography , کتابخانه دیجیتالی دانشگاه علوم پزشکی و خدمات درمانی شهید بهشتی
Purpose : Age-Related Macular Degenration (AMD) is the leading cause of blindness in Europe, the USA and Australia. This study tested the hypothesis the hypothesis that targeting MFAP4 (which is upregulated at sites of vascular remodelling) would reduce choroidal vessel growth following laser induced choroidal neovascularisation in murine eyes. Methods : Female C57/Bl6 mice were anaesthetised and laser coagulation of the Bruchs membrane was performed (Phoenix Micron IV retinal imaging microscope). Intraocular injection of either 1mg mouse IgG (DAKO) 1 or 5mg aMFAP4 or 1mg aVEGF. Injections were performed using a 36 Gauge Hamilton syringe, in a total of 2ml. Injections were performed at day 0 and day 7. Fundus Fluorescein Angiography (FFA) was performed on day 7 and day 14. Mice were culled and eyes excised, fixed in 4% paraformaldehyde. Choroids were dissected and immunostained for isolectin IB4 and CD45 and imaged by confocal microscopy. Quantification of lesion size, both of FFA and confocal ...
Aim: To describe the fluorescein angiographic, fundus autofluorescence, and optical coherence tomography (OCT) findings in patients with a unique unilateral lesion of the temporal macula previously named torpedo maculopathy.. Method: This study was a retrospective, observational case series. The medical records of thirteen patients, age 1 to 68 years, seen between 1982 to 2009 were reviewed. Patients were evaluated for lesion features and course on follow-up, visual acuity, fluorescein angiography, visual field defects, fundus autofluorescence, and OCT findings.. Results: In all thirteen patients, the lesion was flat, torpedo shaped, solitary and involved the temporal macula. The hypopigmented lesion had well-defined margins and a characteristic leading edge which pointed toward the center of the macula. Fluorescein angiography revealed transmission hyperfluorescence of the lesion. OCT indicated a thin abnormal retinal pigment epithelium (RPE) signal and Humphrey Visual Field (HVF) testing ...
Additional supplemental methods used are detailed in the supplemental materials.. Human samples. After written informed consent, 10 ARMD patient eyes naive to anti-VEGF therapy had aqueous humor sampled before intravitreal bevacizumab injection (1.25 mg) and 48 hours later by Yoshihiro Wakabayashi or Yasuyuki Yamauchi (Tokyo Medical University Hospital). Eight patients were studied, 5 male and 3 female, with an average age of 71.1 ± 3.2 years. All had typical ARMD diagnosed after fundus examination with a fluorescein angiography, indocyanine green angiography, and optical coherence tomography. Wet ARMD was diagnosed according to established criteria (77). The eyes studied showed classic CNV (2/10), minimally classic CNV (1/10), and occult CNV (7/10), but no retinal angiomatous proliferation. Patients with cataracts causing moderate-to-severe visual disturbance received elective surgery 2 days after intravitreal bevacizumab. Aqueous humor was collected before surgery for evaluation after ...
Additional supplemental methods used are detailed in the supplemental materials.. Human samples. After written informed consent, 10 ARMD patient eyes naive to anti-VEGF therapy had aqueous humor sampled before intravitreal bevacizumab injection (1.25 mg) and 48 hours later by Yoshihiro Wakabayashi or Yasuyuki Yamauchi (Tokyo Medical University Hospital). Eight patients were studied, 5 male and 3 female, with an average age of 71.1 ± 3.2 years. All had typical ARMD diagnosed after fundus examination with a fluorescein angiography, indocyanine green angiography, and optical coherence tomography. Wet ARMD was diagnosed according to established criteria (77). The eyes studied showed classic CNV (2/10), minimally classic CNV (1/10), and occult CNV (7/10), but no retinal angiomatous proliferation. Patients with cataracts causing moderate-to-severe visual disturbance received elective surgery 2 days after intravitreal bevacizumab. Aqueous humor was collected before surgery for evaluation after ...
PURPOSE: To provide long-term (| or =5 years) follow-up data on patients who had previously undergone macular retinal pigment epithelium (RPE) translocation surgery for choroidal new vessels (CNVs) associated with age-related macular degeneration. DESIGN: Retrospective interventional case series. PARTICIPANTS: Four of 9 patients who originally underwent surgery and whose results were reported after 2 years of follow-up were reviewed again 5 to 6 years after surgery. METHODS: All surviving patients from the original trial were contacted, and those who consented to full ocular examination were called in for review. Examination included best-corrected visual acuity (VA), optical coherence tomography (OCT), fundus autofluorescence, fluorescein angiography (FA), and indocyanine green angiography. MAIN OUTCOME MEASURES: Long-term success of RPE translocation was assessed by VA, imaging, angiography, and maintenance of overlying foveal fixation. Comparisons were made to the original 2-year follow-up data
In order to find abnormal blood vessels under the retina and/or to identify conditions that can cause retinal swelling and reduced vision, it is sometimes necessary to perform a test called angiography.. This test is performed by injecting a dye into the vein of the arm, then photographing the dye as it passes through the circulation in the back of the eye. Depending on the pattern of dye transmission and leakage, certain disease processes can be identified. Two different dyes are commonly used: fluorescein and indocyanine green. Special digital cameras joined to computers are used to maximize the effectiveness of this test.. Doctors choose fluorescein angiography to study diseases of the retinal and choroidal blood vessels within the eye. The results of this test enable the physician to diagnosis many abnormalities of the retina and choroid that could not be diagnosed accurately otherwise. The results of this study also serve as a guide to laser treatment for many diseases of the retina and ...
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Eales disease is a type of obliterative vasculopathy, also known as angiopathia retinae juvenilis, periphlebitis retinae, primary perivasculitis of the retina, is an ocular disease characterized by inflammation and possible blockage of retinal blood vessels, abnormal growth of new blood vessels (neovascularization), and recurrent retinal and vitreal hemorrhages. Eales disease with a characteristic clinical picture, fluorescein angiographic finding, and natural course is considered a specific disease entity. Patients are often asymptomatic in the initial stages of retinal perivasculitis. Some patients may develop symptoms such as floaters, blurring vision, or even gross diminution of vision due to massive vitreous hemorrhage. Vision in these patients can be normal to hand movements or light perception only. Bilaterality is quite common (50-90%) patients. The cause of this condition is not known. However, in a significant number of patients, DNA of the bacterium Mycobacterium tuberculosis was ...
Since its introduction in the early 1960s, fluorescein angiography has proved to be an essential tool for diagnosis of many retinal disorders. This course will provide an overview of the use of fluorescein for diagnosing eye related diseases and conditions and include appropriate doses for adult and pediatric patients. Awareness of the side effects, adverse reactions, and complications of the contrast agent allow the ophthalmic healthcare team to anticipate, respond quickly, and support the patient before, during, and following the angiographic procedure using fluorescein ...
Fluorescein Angiography (FA) is an investigation to further investigate the cause of the retinal disease. In this 3ml of a water soluble fluorescent dye is injected into a vein on the patients arm. As the dye reaches the blood vessels of the retina ( It takes only 10sec !! ) , sequential photographs are taken using a sophisticated digital camera. The abnormal leakage of dye or absence of normal pattern of dye gives the doctor clues regarding the diagnosis and severity of the retinal disease ...
Fluorescein Angiography Testing uses a special camera to view both the front and the back of the retina. Schedule an exam today at our Boca Raton or Coral Springs offices.
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The patients visual acuities were 20/100 with -2.00 spherical diopters (D) in the right eye and 20/80 with -2.50 spherical D in the left eye. While the anterior segment examinations were unremarkable for both eyes, the fundus examination of the patient demonstrated multiple bilateral, sharply defined, and scalloped chorioretinal atrophy areas in the mid-peripheral zones. Fundus fluorescein angiography did not show any leakage even in late phases for both eyes. The wide-field OCT scans of both eyes disclosed that increased central macular thicknesses with widespread hyporeflective spaces separated by multiple linear bridging elements in inner nuclear and inner plexiform layers in addition to retinal defects at outer nuclear and outer plexiform layers. Moreover, elevated level of plasma ornithine (967 Mmol/L) was detected, establishing the diagnosis of GA. Additionally, ocular examinations revealed no specific findings such as optic pits, myopic degeneration with staphyloma, or vitreoretinal ...
We are an exclusive solo ophthalmology practice in the eastern suburbs of Pretoria. After opening in June 2013, the practice has grown from strength to strength and we are truly blessed to be able to serve the local and surrounding communities.. The practice is fully equipped with state of the art diagnostic equipment, to be able to diagnose simple as well as complex eye conditions. Surgery is offered primarily at the Intercare day hospital in Hazeldean, but other day hospitals including Optimed eye and laser clinic, and some of the Medicross day hospitals are also available to cater to the patients needs.. The practice is able to offer visual acuity testing and refraction, anterior segment evaluation and photography, tonometry / pachimetry, auto-refraction / keratometry, optical coherence tomography (OCT), fundus fluorescein angiography, fundus auto-fluorescence and fundus photography.. We are also able to assess and treat diabetic retinopathy and screen / evaluate patients for glaucomatous ...
PEDs occur when the thickened inner aspect of the Bruchs membrane and the RPE detach from the rest of the membrane. PEDs can be drusenoid, serous, fibrovascular, or hemorrhagic. Drusenoid PEDs are not associated with CNV; however, in the AREDS, eyes with drusenoid PEDs had a 42% chance of progressing to advanced AMD at 5 years, with an even split between foveal GA and CNV.¹²⁻¹⁴ Fibrovascular and hemorrhagic PEDs are associated with CNV, as may serous PEDs. Clinical signs suggesting CNV associated with a PED include subretinal fluid, lipid, blood, and chorioretinal folds.¹⁶ Intravenous fluorescein angiography (IVFA) or optical coherence tomography angiography (OCT-A) can differentiate the types of PED and whether CNV is present.. Retinal angiomatous proliferation is a form of CNV that is believed to arise from within the retina. The retinal vessels are seen to be anastomosing with the neovascular membrane. It is uncertain whether these vessels develop prior to or after CNV. On OCT, the ...
Phase-variance optical coherence tomography (pv-OCT) visualizes retinal vasculature non-invasively and thus has potential in the early diagnosis of retinal vascular diseases that include diabetic retinopathy and macular degeneration. Currently, circulation of the retina in clinical settings makes use of fundus fluorescein angiography (FA), which involves injection of a fluorescein dye to view the perfusion into the blood stream. The injection makes this an invasive procedure with complications like nausea and vomiting to anaphylaxis and limited axial resolution and information regarding structural and functional consequences of vascular disease. These factors necessitate the development of a non-invasive optical tool for early diagnosis of retinal vascular diseases. The project concentrates on the clinical development of pv-OCT, which has the advantage of being a non-invasive, three-dimensional microvascular imaging method. Developing image processing algorithms for feature extraction and noise ...
A macular indentor for positioning over a macular area of an eye comprises a strip of material having a pair of opposed ends, the strip having a raised portion for indenting the macular area of the eye. The macular indentor is also inflatable for selectively applying pressure to the macular area of the eye.
This test is similar to fluorescein angiography in that a dye is injected into the vein in the arm and we take photographs over time to help us diagnose problems in the back of the eye. The difference, however, is that the dye is used to study mainly the choroidal circulation, or the layer of blood vessels underneath the retina. ICG angiography is used less frequently than fluorescein angiography, but it can be especially useful in cases where blood obscures visualization of the retina. ICG angiography is also performed with a digital (computerized) system at Retina Care Specialists, allowing for immediate interpretation by the physician.. ...
Your doctor may ask you not to eat the morning of your angiography. Your testing will most likely be performed in a specially equipped examination room. It does not require a surgery center or anesthesia. Prior to your procedure, your eye will be dilated.. During the test, a harmless orange-red dye called Fluorescein will be injected into a vein in your arm. The dye will travel through your body to the blood vessels in your retina. Your doctor will use a special camera with a green filter to flash a blue light into your eye and take multiple photographs. He will analyze the pictures and identify any damage to the lining of the retina or to spot the growth of new blood vessels.. This diagnostic test takes about 30 minutes to an hour, including the time for dilation of your eye. You can go home immediately after the procedure. After your angiography, your skin and urine may appear discolored for a short time until the Fluorescein is completely out of your system.. ...
Fundus photographs of a 31-year-old man initially presenting with bilateral disc edema, in evidence more on the right (A) than the left (B), and multifocal deep retinal and choroidal yellowish infiltrates 100-300 μm in diameter. Representative fluorescein angiography of the right eye (at 40 seconds) shows prominent optic disc capillary dilation with hyperfluorescence and blockage at the site of the retinitis in the inferotemporal macula (C); the left eye (at 55 seconds) shows prominent optic disc capillary dilation as well as hypofluorescence at the site of the retinitis inferiorly (D ...
The most important advantage of FA about fundus photography is its capacity to detect macular ischemia denoted by nonperfusion in the retinal capillaries also to detect subtle DME as evidenced by fluorescein leakage with the capillaries (fifty five). An automatic approach to quantitating microaneurysms from digitized fluorescein angiograms was shown to reliably detect microaneurysms with a sensitivity of eighty two% (fifty six). Even further advancement and automation could boost the utility and accessibility of FA ...
A dye injection eye photography test. Provides diagnostic information on retinal diseases such as macular degeneration. Special ultra-wide field camera.
This is a special test used for examination of blood vessels in the eye. It is an office procedure.. What is done?. The procedure is explained to the patient and the consent is taken.. The pupils are dilated using the dilating eye drops.. The patient is seated on the special Digital camera. The chin is placed on the chin rest. The eyes are kept open, looking ahead. A bright yellow- green dye, called fluorescein is injected into a vein in the arm. Various photos of the blood vessels are taken. The dye outlines the blood vessels. Any abnormalities are detected.. ...
The retina is complex and is composed of nerve layers and blood vessels as well as other tissues. The blood vessels that are located in the retina are able to be examined using a special technique and camera called Intravenous Fluorescein Angiography (IVFA). In this procedure, the eye is dilated, and a special dye is injected into the arm. Within 10-15 seconds, the dye that was injected into the arm passes through the blood vessels located in the back of the eye. When the progression of dye occurs, photographs are taken. The filling of the blood vessels with as well as the clearing of the dye allows the physician to see what parts of the eye are healthy or unhealthy. This information allows the physician to target treatment to the most affected part of the eye ...
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In this prospective, observational case series, patients showing a secured diagnosis of MNV on ICGA or Fluorescein Angiography, were imaged by SD-OCTA and SS-OCTA on the same day. Lesion size was measured on 3x3-mm2 and 6x6-mm2 scans using the Maestro 2 SD-OCTA (Topcon Corporation, Tokyo Japan) and the Triton SS-OCTA device (Topcon Corporation, Tokyo Japan) and compared to ICGA (Spectralis HRA, Heidelberg, Germany ...
D. E. Croft, van Hemert, J., Wykoff, C. C., Clifton, D., Verhoek, M., Fleming, A., and Brown, D. M., Precise montaging and metric quantification of retinal surface area from ultra-widefield fundus photography and fluorescein angiography, Ophthalmic Surg Lasers Imaging Retina, vol. 45, pp. 312-317, 2014. ...
Portable and affordable professionals choice. Smartscope PRO fundus camera is lightweight and can also be integrated with Fluorescein Angiography module.
M4: Unintended Data Leakage on the main website for The OWASP Foundation. OWASP is a nonprofit foundation that works to improve the security of software.
TY - JOUR. T1 - The Intra-Operative Use of Fluorescence Angiography in the Management of Ischemic Bowel. AU - Boyer, Kryston AU - Diener, Brian. PY - 2017/10/16. Y1 - 2017/10/16. N2 - Fluorescence angiography (FA) utilizing indocyanine green (ICG) has been used for decades to assist with ophthalmic operations¹. Recently, its use has become more common in the management of myocutaneous flaps, ostomy and intestinal anastomoses. The use of ICG dye angiography in determining the viability of bowel and how it affects the surgeons management is relatively unknown. Below is a case of a 63-year-old male who presented in the intensive care unit (ICU) with an acute abdomen concerning for ischemic bowel. Fluorescence angiography was a key adjunct for the operative decision making for this patient.. AB - Fluorescence angiography (FA) utilizing indocyanine green (ICG) has been used for decades to assist with ophthalmic operations¹. Recently, its use has become more common in the management of myocutaneous ...
TY - JOUR. T1 - Quantitative changes in retinal pigment epithelial detachments as a predictor for retreatment with anti-VEGF therapy. AU - Penha, Fernando M.. AU - Gregori, Giovanni. AU - Garcia Filho, Carlos Alexandre De Amorim. AU - Yehoshua, Zohar. AU - Feuer, William J.. AU - Rosenfeld, Philip J.. PY - 2013/3. Y1 - 2013/3. N2 - Purpose: To determine if quantitative changes in retinal pigment epithelial detachments (PEDs) predict the need for retreatment in eyes undergoing spectral domain optical coherence tomography (SD OCT)-guided as-needed therapy with anti-vascular endothelial growth factor drugs. METHODS:: Patients with vascularized PEDs undergoing SD OCT-guided treatment with anti-vascular endothelial growth factor drugs were retrospectively identified. The decision to retreat these cases was based on qualitative assessments of fluid in the macula. Spectral domain OCT images from visits in which the treatment was withheld were retrospectively analyzed. A novel algorithm was then used to ...
TY - JOUR. T1 - Selective visualization of choroidal neovascular membranes. AU - Asrani, Sanjay. AU - Zou, Shazhou. AU - DAnna, Salvatore. AU - Phelan, Anne. AU - Goldberg, Morton. AU - Zeimer, Ran. PY - 1996/7. Y1 - 1996/7. N2 - Purpose. Laser-targeted angiography has unique advantages over conventional angiography of the fundus. Its efficacy in visualizing choroidal neovascular membranes was tested in a rat model and compared to that of fluorescein angiography. Method. Laser-targeted angiography was performed in rats with choroidal neovascularization (CNV) by injecting heat-sensitive carboxyfluorescein liposomes intravenously, locally releasing a bolus of dye in the choroid with a weak laser pulse, and recording advancement of the bolus on a video camera. Conventional fluorescein angiography also was performed. Results. Laser- targeted angiography revealed CNV as an abnormal pattern of brightly fluorescent vessels. The flow pattern of the bolus and histology, performed in some cases, ...
Cotton wool spots are an abnormal finding on funduscopic exam of the retina of the eye. They appear as fluffy white patches on the retina. They are caused by damage to nerve fibers and are a result of accumulations of axoplasmic material within the nerve fiber layer. There is reduced axonal transport (and hence backlog and accumulation of intracellular products) within the nerves because of the ischemia. This then causes the nerve fibers to be damaged by swelling in the surface layer of the retina. A 1981 analysis concluded that in most instances, cotton-wool spots do not represent the whole area of ischaemic inner retina but merely reflect the obstruction of axoplasmic flow in axons crossing into much larger ischaemic areas.[1] Associated findings include microvascular infarcts and hemorrhages. The appearance of cotton wool spots may decrease over time. Abundant cotton wool spots are seen in Malignant hypertension.. Diabetes and hypertension are the two most common diseases that cause these ...
Choroidal neovascularization (CNV) is a key pathological feature of several of the leading causes of vision loss including neovascular age-related macular degeneration. Here we show that a calreticulin anti-angiogenic domain (CAD)-like peptide 27, CAD27, inhibited in vitro angiogenic activities, including tube formation and migration of endothelial cells, and suppressed vascular sprouting from rat aortic ring explants. In rat model of laser-induced CNV, we demonstrate that intravitreal injection of CAD27 significantly attenuated the formation of CNV lesions as measured via fundus fluorescein angiography and choroid flat-mounts (19.5% and 22.4% reductions at 10μg and 20μg of CAD27 injected, respectively). Similarly, the reduction of CNV lesions was observed in the groups of rats that had received topical applications of CAD27 (choroid flat-mounts: 17.9% and 32.5% reductions at 10μg/mL and 20μg/mL of CAD27 installed, respectively). Retinal function was unaffected, as measured using
The SRDs were resolved in 26 (89.7%) eyes at 3 months after the hPDT. The mean CCT (P = 0.001), the total choroidal area (P = 0.001), and the hypo-reflective area (P = 0.003) of the whole choroid were significantly decreased from the baseline at 3 months. The hyperreflective area of whole choroid was not significantly changed during the study period (P = 0.083). The hyperreflective but not the hyporeflective area of the inner choroid was significantly decreased at 3 months (P = 0.001, P = 1.000, respectively). The hyporeflective but not the hyperreflective area of the outer choroid was significantly decreased at 3 months (P = 0.001, P = 1.000, respectively ...
Recently, for the first time, a comparative study on hyperspectral imaging (TIVITA® Tissue) and fluorescence angiography (indocyanine green) for the
I am a 40 years old man suffered from choroidal neovascular membrane (CNVM) 2 years back in the right eye. I took Avastin at that time. The blood dried but it left a scar on that place and I lost the vision of my right eye. Now |b|I have developed black spots and lines in my other eye too|/b|, which is causing pain in both the eyes and I am facing problem in reading too. How can I save my left eye? Is there any treatment for the CNVM scar?
Fluorescein angiography (FA) has long been the gold standard for vascular imaging of the retina and choroid. It is a test that involves the intravenous injection of fluorescein dye, followed by imaging of the dyes passage through the blood vessels inside the eye. It is commonly used to diagnose many forms of retinovascular disease, as well as to assess the retinas response to various therapeutic interventions. While FA is a relatively safe diagnostic test, it carries the risk of both minor and major side effects. These include nausea and vomiting, yellowing of the skin and urine, vascular extravasation with skin eruption and necrosis, vasovagal reactions, myocardial infarction, respiratory failure, anaphylaxis, cardiopulmonary arrest, and death. Additionally, the test is time-consuming, technically difficult to perform, and requires patients to undergo the discomfort associated with intravenous access. Despite these drawbacks, FA is still commonly used in clinical practice, as there are no ...
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Fundus photographs, fluorescein angiograms, and indocyanine green angiograms of a case with VKH disease who developed MH. a Fundus photography at presentation s
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Purpose: Retinopathy of prematurity (ROP) is the leading cause of preventable blindness in premature infants. Antivascular endothelial growth factor (anti-VEGF) therapy has been used increasingly in treatment as a pharmacological alternative to laser therapy. In this study, we evaluate the results of low-dose anti-VEGF treatments. Methods: Design: Retrospective--observational study. Infants who had been evaluated for ROP disease between February 2016 and February 2017 were assessed. We retrospectively reviewed the ROP stages, treatment results, and complications. Laser photocoagulation (LPC) and intravitreal bevacizumab (0.16 mg IVB) were used for treatment and fundus fluorescein angiography (FFA) was also performed in some of the cases. Results: IVB was applied to 43 infants. A macular hole was seen in one infants eye after IVB. LPC was applied to avascular areas in 21 infants. In three patients, persistence of the disease was observed after administration of a low dose of IVB. Additional LFK ...
Purpose: To evaluate the diagnostic accuracy of spectral-domain optical coherence tomography (SD-OCT) for neovascular age-related macular degeneration (nAMD): a comparison against fundus fluorescein angiography (FFA). Methods ...
Bevacizumab is a recombinant humanized monoclonal antibody against VEGF. It has been approved by the FDA for the treatment of metastatic colon cancer 18. We hypothesize that VEGF also plays a role in the development of CNV in pathologic myopia. Therefore, employing a mode of therapy that would decrease the risks posed to eyes with attenuated sclera, we have treated, through special approval by the Pharmacy and Therapeutic Committee of the Johns Hopkins University School of Medicine, two patients with persistent myopic CNV with intravenous bevacizumab 19. Despite multiple treatments with PDT, the CNV remained active and vision continued to decline in these two index patients. After four infusions of bevacizumab, the CNV became inactive. Six months after the last infusion in each patient, the CNV showed no evidence of activity or leakage on fluorescein angiography. Vision also improved in the diseased eyes of both patients. The two patients tolerated the infusions well, with no adverse events ...
Cotton wool spots are yellow or white spots on the surface of the retina when the retina doesnt get enough blood. The effects of...
TY - JOUR. T1 - Vascular abnormalities in patients with Stargardt disease assessed with optical coherence tomography angiography. AU - Battaglia Parodi, M. AU - Cicinelli, MV. AU - Rabiolo, A. AU - Pierro, L. AU - Bolognesi, G. AU - Bandello, F. PY - 2017. Y1 - 2017. N2 - Aims To describe the vascular abnormalities in patients affected by Stargardt disease (STGD1) by means of optical coherence tomography angiography (OCT-A). Methods Cross-sectional case series, with the following inclusion criteria: diagnosis of STGD1, clear ocular media, and stable fixation. Patients underwent best-corrected visual acuity (BCVA), biomicroscopy, applanation tonometry, short-wavelength fundus autofluorescence (SW-FAF) (HRA Heidelberg, Germany), 3×3 Swept Source OCT-A (Topcon Corporation, Japan). Foveal avascular zone (FAZ) area was manually outlined and removed from the vessel density analysis (ImageJ). Main outcome was vessel density assessment in the superficial capillary plexus (SCP), in the deep capillary ...
Aim To evaluate the quality of oral fluorescein angiography (FA) in relation to food intake. Methods This is an observational, case-crossover study. We collected information from patients undergoing routine oral FA for retinal disease at the Shiley Eye Institute. Eighty patients (160 eyes) were analysed. Fasting and non-fasting images of the same patient were recorded, compared and analysed for different image quality parameters and clinical relevance by experienced retina specialists. Results When analysing the images, intergrader agreement was moderate to good with a Kappa averaging 0.60 (0.5-0.85). When patients were fasting pre-imaging, better angiography quality scores were achieved when compared with images taken when patients were non-fasting (mean 0.84 vs 0.72, p less than 0.001). Multivariate analysis showed that non-fasting patients with higher body mass index had the worst scores. Other clinical parameters, such as staining of drusen, staining of disciform scars or central and ...
PURPOSE: To locate the mildest and/or earliest changes in the retina and/or choroid in Sveinsson chorioretinal atrophy (SCRA), using more advanced techniques than previous studies. METHODS: We used fundus photography, intravenous fluorescein angiography (IVFA) enhanced ocular coherence tomography (OCT) scans, microperimetry and multifocal electroretinography (mfERG) in an attempt to locate the mildest changes in SCRA. Eight patients with SCRA were examined. To improve the resolution of OCT scans, several consecutive recorded B-scans were retrieved for each location of interest. The scans were processed off-line with an averaging algorithm developed to maximally reduce laser speckle (noise). Static microperimetry was performed using the Rodenstock scanning laser ophthalmoscope (SLO). RESULTS: Biomicroscopy and fundus photographs disclosed an apparent thinning of the retinal pigment epithelium (RPE) in the areas minimally affected, where possible changes in the transparent sensory retina were not ...
How do I know if I have Diabetic Retinopathy ?. Prevention is always better than cure. Hence it is essential to have periodic evaluation of your eye by an Ophthalmologist to detect the condition early..Your pupils may be dilated with eyedrops, so that the Ophthalmologist may have a good look at the back of the eye. Newer modalities of investigations like Fundus Fluorescein Angiography (FFA) and Optical Coherence Tomography (OCT) help in accurately determining the severity of the disease and its treatment.. How is Diabetic Retinopathy treated?. Treatment depends on the stage and severity of the disease. Hence early detection of Diabetic Retinopathy is very important. Every Diabetic patient should undergo a proper retina examination at regular intervals. Several treatment options are available for the management of Diabetic Retinopathy like Laser Application to the retina (Laser PRP), certain drugs called Anti VEGFs to be injected into the eye or Vireo-Retinal Eye Surgery in advanced cases. ...
Background Diabetic macular edema (DME) is the most common cause of loss of vision in diabetic patients. The role of inflammation in the pathogenesis of DME has been demonstrated. An intravitreal (IVT) injection of triamcinolone acetonide (TA) is a treatment option for DME. The high incidence of side effects, however, limits the routine use of IVT TA. Aim The aim of this study was to compare the efficacy and safety of an IVT injection of TA with the less invasive posterior subtenon (PST) injection of TA. We test the hypothesis that both techniques have equal efficacy and safety. Patients and methods This is prospective randomized noninferiority trial. Totally, 34 eyes from 30 patients with diffuse center involving DME were randomized in a 1: 1 ratio to receive a TA injection by either method. Baseline evaluation included measurement of best-corrected visual acuity (BCVA) and intraocular pressure (IOP), fundus fluorescein angiography, and optical coherence tomography to measure central macular ...
Choroidal neovascular membranes (CNV) secondary to idiopathic polypoidal choroidal vasculopathy differs in many aspects from other entities associated with CNV including clinical and fluorescein angiographic features, clinical course, and prognosis.
The understanding of retinal disease has evolved rapidly with a growing number of clinical evidence supplied by ultrawidefield retinal imaging. Optos 200Tx ultra-widefield retinal imaging system uses a scanning laser ophthalmoscope, as well as an ellipsoid mirror. This creates a possibility of making a virtual focal point inside the eye and, in turn, enables the system to simultaneously make a single capture of the central retina and periphery. This system offers multimodal ultra-widefield imaging, including color photographs, fundus autofluorescence images, red-free images and fluorescein angiography (FA), allowing visualization of the retinal circulation. For color photographs, green and red lasers are used simultaneously to allow visualization of retinal substructures from the sensory retina and retinal pigment epithelium to the choroid. In our clinic ultra-widefield fluorescein angiography has became an elegant diagnostic imaging modality that has improved our ability to diagnose and plan ...
This is supported by the fact that retinal capillary non-perfusion has not been shown to occur keflex hydrocodone fundus fluorescein angiography in OIS (Mizener, 1997). How many additional risk factors are present.
An Ocular fluorescein angiogram is often referred to in ophthalmology circles as either an angiogram or a fluorescein. We will use the term angiogram to mean Ocular Fluorescein Angiogram. Other types of angiography require methods and procedures which differ from those outlined here. Although digital imaging is quickly becoming the standard method for acquiring and presenting angiographic images, black and white film processing and printing remain an integral part of ophthalmic photography in some areas. The film on which angiograms are taken must be processed using a photographic developer. This developer creates a negative image on the film. The fluorescein dye, which appears light in the vessels of the ocular fundus, are rendered as dark images on the film against a clear background.. Many ophthalmologists prefer to interpret the fluorescein negatives because some small amount of information may be lost in producing prints, and because simple film processing can be done fairly quickly without ...
Fluorescein angiography. References[edit]. .mw-parser-output .reflist{font-size:90%;margin-bottom:0.5em;list-style-type:decimal ...
J. Donald M. Gass, a macular degeneration specialist developed the use of fluorescein angiography as a diagnostic tool, and Dr ... CS1 maint: discouraged parameter (link) Norton, EW; Gutman, F (1965). "Diabetic retinopathy studied by fluorescein angiography ... pioneered the use of fluorescein angiography for the diagnosis of macular and retinal diseases, which led to the accurate ...
Fluorescein angiography is a helpful adjunct. Findings include delayed venous filling, hypofluorescence caused by hemorrhage ...
DS = Digital Subtraction Angiography. *DR = Digital Radiography. *EC = Echocardiography. *ES = Endoscopy. *FA = Fluorescein ...
It is an important landmark in Fluorescein angiography. Its diameter is 0.5mm, the central 1.5 degrees of an individual's ...
Variability in fluorescein angiography interpretation for photodynamic therapy in age-related macular degeneration. Retina. ... Quantitative image sequence analysis of fundus fluorescein angiography. Ophthalmic Surg Lasers. 1999 Jan;30(1):72-3. 19. Shin ... Quantitative, spatio-temporal image analysis of fluorescein angiography in age-related macular degeneration. Proc SPIE 1998; ... retinal imaging with a number of publications on image analysis methods for modalities such as fluorescein angiography. He ...
Fluorescein angiography is commonly used to diagnose the syndrome. There have been several methods in treating patients with ... Fluorescein angiography is quite useful in diagnosing retinal features of the disease, and the use of ultrasonography and ... MRI, CT, and cerebral angiography may all be used to investigate the extent and location of any vascular lesions affecting the ...
Sodium Fluorescein Angiography (abbreviated SFA, FA or FAG) is used for the imaging of retinal vascular disease and utilises ... Following the development of fundus photography, David Alvis, and Harold Novotny, performed the first fluorescein angiography ( ... Marmor, Michael F. (2011-07-01). "Fluorescein angiography: Insight and serendipity a half century ago". Archives of ... Red free photography is also regularly used as a base line photo prior to Angiography. Angiography is a process of ...
The abnormal vessels are even better seen with fluorescein angiography. In advanced disease, glaucoma is diagnosed by measuring ...
Fluorescein angiography is used less often than in the past. These investigations may be followed by genetic testing in order ...
Techniques of fluorescein angiography developed by Knight won international acclaim. Knight was president of the Dunedin Film ...
Amar Agarwal (2007). Fundus Fluorescein and Indocyanine Green Angiography: A Textbook and Atlas. SLACK Incorporated. pp. 18-. ...
"Low dose fluorescein angiography of the conjunctiva and episclera". British Journal of Ophthalmology. 71 (1): 2-10. doi:10.1136 ... Fluorescein angiography has been used to study the blood flow of the bulbar conjunctiva and to differentiate the bulbar ... Meyer, P. A. (1988-01-01). "Patterns of blood flow in episcleral vessels studied by low-dose fluorescein videoangiography". Eye ...
Fluorescein angiography (FA) is helpful in identifying the anomalous vasculature, particularly in the early stages of Type 2 ... Diagnosis of MacTel type 2 may be aided by the use of advanced imaging techniques such as fluorescein angiography, fundus ... An abnormal capillary pattern is may be idedntified with fluorescein angiography. Areas of focal RPE hyperplasia (pigment ... Indocyanine green angiography-guided laser photocoagulation directed at the leaky microaneurysms and vessels combined with sub- ...
International Symposium on Fluorescein Angiography Ghent 28 March-1 April 1976. Documenta Ophthalmologica Proceedings Series. 9 ...
McGregor, AD (1987). "The Allen test - an investigation of its accuracy by fluorescein angiography". J Hand Surg Br Vol. 12 (1 ... In addition, the results of Allen's tests do not appear to correlate with distal blood flow as demonstrated by fluorescein dye ...
Fluorescein angiography may demonstrate leakage in areas remote from the retinal infarctions. In a recent analysis (Susac et al ... Both patients underwent fluorescein retinal angiography that demonstrated multifocal retinal artery occlusions without evidence ... Gass Plaques and Fluorescein Leakage in Susac Syndrome. Journal of Neurological Sciences 299(1-2): 97-100; 2010 Susac JO, ...
In wet macular degeneration, angiography can visualize the leakage of bloodstream behind the macula. Fluorescein angiography ...
Its blood flow can be revealed by fluorescein angiography or laser Doppler imaging. Thus if the central retinal artery gets ...
"Classification of Human Retinal Microaneurysms Using Adaptive Optics Scanning Light Ophthalmoscope Fluorescein Angiography". ... Usually not detected by CT angiography. Retinal microaneurysms can be diagnosed using ophthalmoscopy, fundus photography, FFA, ...
One way to distinguish IRMA from retinal neovascularization is to perform fluorescein angiography. Since IRMA blood vessels are ... and therefore exhibit hyperfluorescence on fluorescein angiography. IRMA is deeper in the retina than neovascularization, has ...
Fluorescein angiography reveals an abrupt diminution in dye at the site of the obstruction. Visual field testing can confirm ...
On the basis of fluorescein angiography, CNV may be described as classic or occult. Two other tests that help identify the ... condition include indocyanine green angiography and optical coherence tomography. CNV is conventionally treated with ...
Fluorescein Angiography, and Electroretinography Features of Niacin Maculopathy: New Insight Into Pathogenesis". Journal of ...
Fluorescein angiography uses injection of a fluorescein dye to image the back of the retina. It is a commonly used technique ... "Comparison between optical coherence tomography and fundus fluorescein angiography for the detection of cystoid macular edema ...
He was also the director of the fluorescein angiography Laboratory at the Michael Reese Hospital. In 1977, he was a full ...
Fluorescein angiography is usually performed for diagnosis and follow-up of patients with POHS. ... Stefan Dithmar; Frank Gerhard Holz (28 April 2008). Fluorescence Angiography in Ophthalmology. Springer. pp. 168-. ISBN 978-3- ...
Fundus Fluorescein angiography (FFA): This is an imaging technique which relies on the circulation of fluorescein dye to show ... Fluorescein angiography is used to assess the extent of retinopathy that aids in treatment plan development. Optical coherence ... If there is reduced vision, fluorescein angiography can show narrowing or blocked retinal blood vessels clearly (lack of blood ... If macular edema is suspected, OCT and sometimes retinal angiography (FFA) may be performed. Diabetic retinopathy also affects ...
Further tests such as fluorescein angiography or lumbar puncture are usually performed to confirm the diagnosis. ...
"Fluorescein Angiography Does Not Alter the Initial Clinical Management of Choroidal Neovascularization in Age-Related Macular ...
Fluorescein angiography. *Fundus photography. *Corneal topography. *Optical coherence tomography. *Electrodiagnosis: ...
Intravenous or oral fluorescein is used in fluorescein angiography in research and to diagnose and categorize vascular ... Main article: Fluorescein (medical use). Fluorescein sodium, the sodium salt of fluorescein, is used extensively as a ... Fluorescein is also known as a color additive (D&C Yellow no. 7). The disodium salt form of fluorescein is known as uranine or ... Jennings BJ, Mathews DE (1994). "Adverse reactions during retinal fluorescein angiography". J Am Optom Assoc. 65 (7): 465-71. ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Fluorescein angiography. *Fundus photography. *Corneal topography. *Optical coherence tomography. *Electrodiagnosis: ...
2004). "An autopsy case of fatal anaphylactic shock following fluorescein angiography: a case report". Med Sci Law 44 (3): 264- ... Fineschi V., Monasterolo G., Rosi R. in Turillazzi E. (1999). "Fatal anaphylactic shock during a fluorescein angiography". ... Obstaja veliko derivatov fluoresceina, kot je fluorescein izotiocianat (FITC). Slednji je pravzaprav fluorescein, ki vsebuje na ... Anaphylactoid reactions to fluorescein". Journal of Allergy and Clinical Immunology 115 (3): S483-S523. 2005. doi:10.1016/j. ...
Fluorescein angiography. *Fundus photography. *Corneal topography. *Optical coherence tomography. *Electrodiagnosis: ...
... fluorescein or indocyanine green angiography, optical coherence tomography and ultrasound.[2][5][9][7] For example, indocyanine ... green angiography may detect continuing choroidal inflammation in the eyes without clinical symptoms or signs.[5][8] Ocular MRI ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Fluorescein dye can aid in the localisation of chyle leak. Hypertension is defined when a patient's blood pressure in the arm ... Coarctation of the aorta can be accurately diagnosed with magnetic resonance angiography. In teenagers and adults ... "Intraoperative Identification of Chyle Leak During Coarctation Repair Using Fluorescein Dye". The Annals of Thoracic Surgery. ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ... Grier, D.J.; Watson, L.J.; Hartnell, G.G.; Wilde, P. (1993). "Are routine chest radiographs prior to angiography of any value ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ... Society for Cardiovascular Angiography and, Interventions; Society of Interventional, Radiology; Society for Vascular, Medicine ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ... A recent trend in the United States is the stand-alone day angiography facility associated with a private vascular surgery ... Arterial and venous disease treatment by angiography, stenting, and non-operative varicose vein treatment sclerotherapy, ...
Angiography. *Digital subtraction angiography *Cerebral angiography. *Aortography. *Fluorescein angiography. *Radionuclide ...
Fluorescein angiography. *Fundus photography. *Corneal topography. *Optical coherence tomography. *Electrodiagnosis: ...
"Low dose fluorescein angiography of the conjunctiva and episclera". British Journal of Ophthalmology (jezik: engleski). 71 (1 ... "Patterns of blood flow in episcleral vessels studied by low-dose fluorescein videoangiography". Eye (London, England). 2 (5): ...
Computed Tomography Angiography Intravenous digital subtraction angiography "microangiography". The Free Dictionary. Takeshita ... Fluorescein and indocyanine green are often used for this purpose.[citation needed] Computational imaging with lasers, ... "Micro-angiography for tumor vessel imaging" (PDF). Retrieved 2009-06-10. Bollinger A, Amann-Vesti BR (June 2007). "Fluorescence ... Microangiography (/ˌmaɪkroʊˌændʒiˈɒɡrəfi/ MY-kro-AN-jee-OG-rə-fee) is a type of angiography that consists of the radiography of ...
These tests include fundus fluorescein angiography (FFA) and ocular coherence tomography (OCT). FFA is used to identify Retinal ... Eales Disease with a characteristic clinical picture, fluorescein angiographic finding, and natural course is considered a ...
Fluorescein angiography A method of taking a picture of the flow of blood in the vessels of the eye by tracing the progress of ...
... (FFA). This is a special test used for examination of blood vessels in the eye. It is an office ... Fluorescein Angiography may be done when any retinal disease, especially that involving the blood vessels is suspected, like ... A bright yellow- green dye, called fluorescein is injected into a vein in the arm. Various photos of the blood vessels are ...
Fluorescein angiography is an eye test that uses a special dye and camera to look at blood flow in the retina and choroid. ... Fluorescein angiography is an eye test that uses a special dye and camera to look at blood flow in the retina and choroid. ... Retinal fluorescein angiography: a sensitive and specific tool to predict coronary slow flow. Egypt Heart J. 2018;70(3):167-171 ... An abnormal value on a fluorescein angiography may be due to:. *Blood flow (circulatory) problems, such as blockage of the ...
Fluorescein angiography (FA), fluorescent angiography (FAG), or fundus fluorescein angiography (FFA) is a technique for ... Fluorescein angiography does not involve the use of ionizing radiation. Fluorescein angiography was pioneered by German ... The fluorescein is administered intravenously in intravenous fluorescein angiography (IVFA) and orally in oral fluorescein ... Angiography at the US National Library of Medicine Medical Subject Headings (MeSH) "Fluorescein angiography". U.S. National ...
Buy Practical Handbook of Fluorescein Angiography by Bruno Lumbroso, Marco Rispoli from Waterstones today! Click and Collect ... pathological fluorescein angiography analytical study, pathological fluorescein angiography and major fluorescein angiography ... Practical Handbook of Fluorescein Angiography (Paperback). Bruno Lumbroso (author), Marco Rispoli (author) Sign in to write a ... Fluorescein angiography is an eye test that uses a special dye and camera to look at blood flow in the retina and choroid, the ...
Fluorescein angiography is an eye test that uses a special dye and camera to look at blood flow in the retina and choroid. ... Also known as: Retinal photography and Eye angiography. Definition. Fluorescein angiography is an eye test that uses a special ... Velez-Montoya R, Olson JL, Mandava N. Fluorescein angiography and indocyanine green angiography. In: Yanoff M, Duker JS, eds. ... An abnormal value on a fluorescein angiography may be due to:. *Blood flow (circulatory) problems, such as blockage of the ...
What is a fluorescein angiography?. Answer: This is a technique that enables the observation of the vessels of the retina using ... What is a fluorescein angiography?. Answer: This is a technique that enables the observation of the vessels of the retina using ... a series of photographs taken after an intravenous injection of fluorescein. ... a series of photographs taken after an intravenous injection of fluorescein. ...
... ... Comparison between Optical Coherence Tomography Angiography and Fluorescein Angiography," Journal of Ophthalmology, vol. 2016, ...
... with diabetic retinopathy and 23 control eyes with fluorescein angiography (FA) and high-speed Fourier-domain optica ... Researchers examined 124 eyes (63 patients) with diabetic retinopathy and 23 control eyes with fluorescein angiography (FA) and ...
In the year 1969, F. Lescure presented the first results concerning fluorescein angiography of the ocular fundus in animals. ... Fluorescein angiography is a dynamic method to explore the fundus vasculature and tissues. ... Performing An Angiography. Half an hour before the test, the pupils of the animal will be dilated using tropicamide drops. ... The intravenous injection of fluorescein is done just after having changed the color camera by the black and white one. Each ...
Since fluorescein angiographic (FA) criteria for differentiating optic disc drusen (ODD) from optic disc edema (ODE) have been ... Early and late fluorescein angiography features distinguish optic disc drusen from edema ... Since fluorescein angiographic (FA) criteria for differentiating optic disc drusen (ODD) from optic disc edema (ODE) have been ...
Angiography Dyspnea Epinephrine Erythema Female Fluorescein Fluorescein Angiography Humans Hypotension Infusions, Intravenous ... BACKGROUND: Fluorescein angiography is the standard tool for the diagnosis of vitreoretinal diseases. Fluorescein sodium has ... A Case of Anaphylaxis Occurred after Fluorescein Angiography.. Lee SY , Kim JY , Kang MG , Kim MY , Song WJ , Jung JW , Kang HR ... Fluorescein Angiography MeSH Terms expand_less. expand_more. Anaphylaxis ...
Color photography vs fluorescein angiography in the detection of diabetic retinopathy in the diabetes control and complications ... we compared stereoscopic color fundus photography and stereoscopic fluorescein angiography in the detection of diabetic ... When used in conjunction with color photography, angiography allows a modest increase in sensitivity to the earliest signs of ... on review of fluorescein angiograms, including two standard 30 degrees fields in each eye. Of those patients with no ...
fluorescein angiography. FA. angiography. optical coherence tomography. OCT. phase variance. comparison. age-related macular ... Fluorescein angiography (FA) has long been the gold standard for vascular imaging of the retina and choroid. It is a test that ... Subjects will receive fluorescein angiography (FA) as part of their normal clinical evaluation and will undergo phase variance ... Comparison of Phase-variance Optical Coherence Tomography and Fluorescein Angiography in Retinovascular Imaging (PVOCT). This ...
Reasons for a Fluorescein Angiography. The fluorescein angiography provides doctors with information about the retina. It can ... Fluorescein angiography is a diagnostic procedure used to evaluate the blood vessels in the following parts of the eye:. * ... After the Fluorescein Angiography Procedure. There is a risk of complications with any procedure. Some of the risks that ... The Fluorescein Angiography Procedure. *The patients pupils are dilated with eye drops ...
Fluorescein angiography is an important technique used when first diagnosing eye diseases that affect the retina. It is ... What happens when you have fluorescein angiography?. Fluorescein angiography involves having an injection of dye into one of ... Fluorescein angiography is an important technique used when first diagnosing eye diseases that affect the retina. It is ... In the first one to two minutes, the images produced by fluorescein angiography show how the dye passes through the arteries ...
Unwanted Effects of Fluorescein Angiography in Non-Insulin Dependent Diabetics J Dolben; J Dolben ... J Dolben, S Young, D R Owens, J Vora; Unwanted Effects of Fluorescein Angiography in Non-Insulin Dependent Diabetics. Clin Sci ... 5′- S -(2-aminoethyl)- N 6 -(4-nitrobenzyl)-5′-thioadenosine (SAENTA)- x 2 -fluorescein Biochem J (February,1991) ...
... Lindberg, Charlotte LU ; Andréasson, ... Multifocal electroretinography and fluorescein angiography in retinal vein occlusion.}, volume = {26}, year = {2006}, } ...
Velez-Montoya R, Olson JL, Mandava N. Fluorescein angiography and indocyanine green angiography. In: Yanoff M, Duker JS, eds. ... Fluorescein angiography is an eye test that uses a special dye and camera to look at blood flow in the retina and choroid . ... An abnormal value on a fluorescein angiography may be due to:. *Blood flow (circulatory) problems, such as blockage of the ... Intravenous fluorescein angiography. In: Tasman W, Jaeger EA, eds. Duanes Ophthalmology 2013 edition . Philadelphia, PA: ...
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Fluorescein angiographies were performed in 65 patients with peripheral uveitis. 34 subjects (52%) showed pathologic dye ... Fluorescein Angiography*. Humans. Male. Retina / blood supply. Retinitis / diagnosis*. Uveitis / diagnosis*, etiology. ... 4000639 - Fluorescein angiography in inflammation of the peripheral fundus: involvement of the ch.... 20190989 - The role of ... Fluorescein angiography was able to detect minute lesions and corresponded with the activity of the inflammation.. ...
... described and demonstrated the technique of retinal fluorescein angiography (FA) in 1961.[1] John Donald McIntyre Gass began ... Interpretation of fundus fluorescein angiography. St. Louis:Mosby-Year Book:1978. *↑ Gass JDM. Stereoscopic atlas of macular ... Fluorescein angiography complication survey. Ophthalmology 1986;93:611-7. *↑ Halperin LS, Olk J, Soubrane G, Coscas G. Safety ... Abnormal Fluorescein Angiography. Deviations from the normal FA are most often described in terms of relative fluorescence. ...
Ultra-Widefield Fluorescein Angiography in Children Using Oral Fluorescein Administration Andrew Schneier; David Kim; Deborah ... Ultra-Widefield Fluorescein Angiography in Children Using Oral Fluorescein Administration You will receive an email whenever ... Ultra-Widefield Fluorescein Angiography in Children Using Oral Fluorescein Administration. Invest. Ophthalmol. Vis. Sci. 2013; ... Early results with oral fluorescein angiography (OFA) using conventional fundus photography systems were disappointing due to ...
Fluorescein Angiography. Definition. Fluorescein angiography is an eye test that uses a special dye and camera to look at blood ... Intravenous fluorescein angiography. In: Tasman W, Jaeger EA, eds. Duaneâ  s Ophthalmology. 15th ed. Philadelphia, Pa: ... The use of fluorescein angiography in acquired macular diseases. In: Tasman W, Jaeger EA, eds. Foundations of Clinical ... An abnormal value on a fluorescein angiography may be due to:. *Blood flow (circulatory) problems, such as blockage of the ...
Ultra-wide Field Fluorescein Angiography Guided Targeted Retinal Photocoagulation in Diabetic Retinopathy ... Ultra-wide Field Fluorescein Angiography Guided Targeted Retinal Photocoagulation in Diabetic Retinopathy ... We performed a prospective interventional study to assess the effects of ultra-wide field fluorescein angiography (UWFFA) ... Pallavi Singh, Atul Kumar, Parijat Chandra, Vinod Kumar; Ultra-wide Field Fluorescein Angiography Guided Targeted Retinal ...
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Measured by Fluorescein Video Angiography Anthony W. B. Stanton, Simon B. Drysdale, Reena Patel, Russell H. Mellor, Michael J. ... Total fluorescein mass in a field of unit area is the sum of the fluorescein in the interstitial fluid (volume Vi) and in the ... Rate Constants for Fluorescein Clearance in Phase III. The gradual clearance of fluorescein from the tissue in Phase III showed ... As the fluorescein bolus passed through the microcirculation, fluorescein rapidly diffused into the interstitium and FI of the ...
Yannuzzi LARohrer KTTindel LJSobel RSCostanza MAShields W: Fluorescein angiography complication survey. Ophthalmology 93:611- ... aneurysm surgery; blood flow insufficiency; fluorescein cerebral angiography; fluorescein sodium; perforating artery Page Count ... Friberg TRExamination of the retina: principles of fluorescein angiography. Albert DMJakobiec FA: Principles and Practice of ... Evidence from fluorescein angiography and microregional blood flow by radioisotopes during excision of an angioma. J Neurosurg ...
Fluorescein angiography (FA) is a diagnostic imaging modality to visualize abnormalities in retinal and choroidal circulation ... Kesav N, Yang Q, Losert W, Kim J, Jaeger S, Sen HN Novel automated processing techniques of fluorescein angiography (FA) images ... Novel automated processing techniques of fluorescein angiography (FA) images in patients with Uveitis.. Kesav N, Yang Q, Losert ...
The use of ultra wide field fluorescein angiography in evaluation and management of uveitis ... Comparison between wide-angle OCT angiography and ultra-wide field fluorescein angiography for detecting non-perfusion areas ... Comparison of wide-field fluorescein angiography and 9-field montage angiography in uveitis. American Journal of Ophthalmology ... Ultra-wide Field Fluorescein Angiography in Retinitis Pigmentosa with Intermediate Uveitis. Journal of Ophthalmic and Vision ...
  • Velez-Montoya R, Olson JL, Mandava N. Fluorescein angiography and indocyanine green angiography. (scripps.org)
  • Evaluation of Idiopathic Choroidal Neovascularization with Indocyanine Green Angiography in Patients Undergoing Bevacizumab Therapy. (nih.gov)
  • The fluorescein angiography (a) and indocyanine green angiography (b) images of the same subject presented in Figures 1 and 2 two months after two consecutive monthly bevacizumab injections were given. (nih.gov)
  • The choroidal neovascularization has decreased 45.3% ((0.86 − 0.47)/0.86) from its baseline value on indocyanine green angiography. (nih.gov)
  • Simultaneous confocal scanning laser fluorescein and indocyanine green angiography. (semanticscholar.org)
  • Indocyanine green angiography determines the vascular abnormalities associated with respective tissue. (targetwoman.com)
  • On the other hand recently introduced Indocyanine green angiography mainly explores the pathology affecting the choroid. (quotery.com)
  • Indocyanine green angiography is similar to fluorescein angiography. (healthline.com)
  • Indocyanine green angiography is a diagnostic test that involves taking photographs of the blood vessels in the eye with the help of a contrast dye. (midhudsonretina.com)
  • From the PublisherPrice: $ Fundus Fluorescein and Indocyanine Green Angiography: A Textbook and Atlas is a complete and detailed reference that comprehensively covers fluorescein angiography, the more recent and advancing indocyanine green angiography and their effectiveness in identifying and evaluating various retinal diseases. (driftwood-dallas.com)
  • Analysis Methods Adverse effects of fluorescein and indocyanine green angiography Age-related macular degeneration and chorioidal neovascularisation of other etiologies Hereditary and toxic retinal diseases Tumors Diabetic rertinopathy Other retinal vascular diseases Diseases of the macula and central retina Inflammatory and autoimmune diseases Disorders of the optic nerve. (driftwood-dallas.com)
  • To examine the clinical implications of change in choroidal neovascularization (CNV) size on indocyanine green (ICG) angiography in subjects with idiopathic CNV undergoing bevacizumab therapy. (nih.gov)
  • The combination of fluorescein angiography (FA) and indocyanine green (ICG) angiography using the Heidelberg Retina Angiograph II (HRA 2) should make a delineation of distinct pattern(s) possible in order to better select and assess therapy.Methods: This is a retrospective, case-control, single-centre study. (uzh.ch)
  • Two different dyes are commonly used: fluorescein and indocyanine green. (neretina.com)
  • Two different dyes can be injected into the vein: Fluorescein or Indocyanine Green (ICG). (launcestoneye.com.au)
  • Indocyanine is especially helpful when there is a leakage of blood, which makes interpretation of fluorescein studies difficult. (southeastretina.com)
  • Divided into five sections, it covers interpretation, general principles for interpreting a pathological fluorescein angiography, pathological fluorescein angiography analytical study, pathological fluorescein angiography and major fluorescein angiography syndromes, including diabetic retinopathy, vascular occlusions, age related macular degeneration and inflammatory disorders. (waterstones.com)
  • Ciardella AP, Kaufman SR, Yannuzzi LA. The use of fluorescein angiography in acquired macular diseases. (ucsfbenioffchildrens.org)
  • Abnormal results of fluorescein angiography test may indicate diabetic retinopathy , macular degeneration , or cancer . (targetwoman.com)
  • They can use this test to confirm the results of fluorescein angiography and to diagnose your type of macular degeneration. (healthline.com)
  • Fluorescein angiography, a clinical test to look at blood circulation inside the back of the eye, aids in the diagnosis of retinal conditions associated with diabetes, age-related macular degeneration, and other eye abnormalities. (maculaandretinainstitute.com)
  • Fluorescein Angiography is a valuable test that provides valuable information about many eye diseases including Diabetic Retinopathy, Macular Degeneration, Retinal Vascular Disease such as Retinal Artery Occlusion and Retinal Vein Occlusion, as well as other types of Macular Disease. (bweyecenter.com)
  • Fluorescein angiography is used to evaluate the blood vessels in eyes with macular or retinal disease. (epso.ca)
  • Macular Degeneration - What is Fluorescein Angiography? (eye-socal.com)
  • For example, fluorescein angiography is commonly used to guide treatment for age-related macular degeneration, diabetic retinopathy, and retinal vascular occlusions. (hretina.com)
  • Fluorescein angiography (AGF) is a diagnostic test used in ophthalmology to aid interpretation of retinal pathology. (ophthalmicphotography.net)
  • Fluorescein angiography is an indispensable tool in modern ophthalmology. (readrate.com)
  • fluorescein angiography technique and interpretation ophthalmology monographs 5 Oct 08, 2020 Posted By Jackie Collins Media TEXT ID 079a0f07 Online PDF Ebook Epub Library fluorescein angiography technique and interpretation ophthalmology monographs 5 posted by barbara cartlandltd text id 079a0f07 online pdf ebook epub library does It's a way of studying what is happening at the back of your eye. (quotery.com)
  • PDF Fluorescein Angiography Technique And Interpretation Ophthalmology Monographs 5 " Uploaded By James Michener, fluorescein angiography technique and interpretation ophthalmology monographs 5 joseph w md berkow david h orth james s kelley isbn 9781560550099 fluorescein angiography technique and interpretation ophthalmology monographs 5 author wikictsnetorg sophia m ller 2020 09 22 05 56 … If blue light reflected from nonfluorescent fundus structures penetrates the green-yellow filter, pseudo fluorescence occurs. (quotery.com)
  • The angiographic apparatus we use has a flash generator, with a rapid regeneration (1 or 2 frames per second), a variable power, from 10 W/sec to 300 W/sec., a wide angle lens (45 ° up to 60 °), two cameras, one for color retinography and the other one, motorized, for the black and white angiography. (vin.com)
  • Since fluorescein angiographic (FA) criteria for differentiating optic disc drusen (ODD) from optic disc edema (ODE) have been unclear, the authors of this study reviewed FA findings in ODD cases to identify distinguishing features. (aao.org)
  • The purpose of this study is to determine whether phase variance optical coherence tomography (PV-OCT), a software-based optical coherence tomography(OCT) image processing technology, can be used to generate angiographic images of the retinochoroidal vasculature that are comparable to those produced by fluorescein angiography (FA), the current gold standard diagnostic test. (clinicaltrials.gov)
  • Figure 1: Ultra-widefield oral fluorescein angiographic image (left eye) demonstrating peripheral vascular telangiectasias and leakage in a 6-year-old boy with Coats' Disease. (arvojournals.org)
  • Figure 2: Ultra-widefield oral fluorescein angiographic image (right eye) demonstrating mid-peripheral neovascularization and avascular peripheral retina in a 12-year-old girl with Sickle Cell Retinopathy. (arvojournals.org)
  • Aqueous angiography in model cow eyes demonstrated segmental angiographic outflow patterns with either fluorescein or ICG as a tracer. (arvojournals.org)
  • Awareness of the side effects, adverse reactions, and complications of the contrast agent allow the ophthalmic healthcare team to anticipate, respond quickly, and support the patient before, during, and following the angiographic procedure using fluorescein. (jcahpo.org)
  • Fluorescein angiographic patterns reveal a wide variety of anatomical, pathological and physiological information which, correctly interpreted, contributes to the differential diagnosis of fundus diseases and to the evaluation of appropriate therapeutic approaches. (quotery.com)
  • This atlas is a comprehensive guide to fluorescein angiographic findings of ocular disorders. (driftwood-dallas.com)
  • Written by one of the world's leading ophthalmologists, Atlas of Fundus Florescein Angiography provides a comprehensive look at fluorescein angiographic findings in different disorders. (driftwood-dallas.com)
  • Sodium fluorescein is added into the systemic circulation, the retina is illuminated with blue light at a wavelength of 490 nanometers, and an angiogram is obtained by photographing the fluorescent green light that is emitted by the dye. (wikipedia.org)
  • A 6-second bolus injection of 2-5 cc of sodium fluorescein into a vein in the arm or hand A series of black-and-white or digital photographs are taken of the retina before and after the fluorescein reaches the retinal circulation (approximately 10 seconds after injection). (wikipedia.org)
  • The fluorescent dye used is sodium fluorescein injected intra venously. (vin.com)
  • Fluorescein sodium has been widely used for decades. (koreamed.org)
  • RESULTS: The skin prick test showed a positive reaction to fluorescein sodium. (koreamed.org)
  • Oral administration of fluorescein sodium is a safe alternative to intravenous administration and may be indicated in pediatric patients deemed unsuitable for venipuncture. (arvojournals.org)
  • Five to 10 ml of 10% fluorescein sodium mixed in juice were administered orally. (arvojournals.org)
  • Sodium fluorescein accumulation/clearance was recorded for 30 min, and fluorescence intensity (FI) was quantified by computer analysis of videotape image gray levels. (aacrjournals.org)
  • In all patients, after intravenous administration of 5 ml of 10% fluorescein sodium, fluorescence in the vessels was clearly observed through a microscope and recorded on videotape. (thejns.org)
  • The perforating artery is illuminated by the probe's excitatory beam (B). After the intravenous administration of 5 ml of 10% fluorescein sodium, the increase of fluorescence in the perforating artery is observed under a microscope through a barrier filter (C) that facilitates the collection of only fluorescein sodium-induced fluorescence. (thejns.org)
  • The AGF consists of intravenous injection in the dye, fluorescein sodium, which is transported in the blood of both freeform As bound to albumin. (ophthalmicphotography.net)
  • It is intravenous injection of a dye, fluorescein sodium, which is carried in the blood both free form and bound to albumin. (ophthalmicphotography.net)
  • Discuss possible side effects from sodium fluorescein. (jcahpo.org)
  • FLUORESCENCE C20H12O5 Refers to fluorescein sodium (C20H10Na2O5) A brown or … Fluorescein- is an organic compound and dye. (quotery.com)
  • The Fluorescein Angiography study is performed by injecting a sodium-based dye, called Sodium Fluorescein, into an arm vein. (bweyecenter.com)
  • As its name suggests, a special colorant is used to carry this out, called sodium fluorescein, which is injected into the patient and travels via the bloodstream to the circulation of the ocular fundus . (institutmacula.com)
  • The fluorescein is administered intravenously in intravenous fluorescein angiography (IVFA) and orally in oral fluorescein angiography (OFA). (wikipedia.org)
  • Early results with oral fluorescein angiography (OFA) using conventional fundus photography systems were disappointing due to lack of contrast and resolution in the images produced. (arvojournals.org)
  • Anterior segment optical coherence tomography (AS-OCT), anterior segment optical coherence tomography angiography (AS-OCTA), anterior segment intravenous fluorescein angiography (AS-IVFA) and ultrasound biomicroscopy were performed when possible. (octnews.org)
  • Optical coherence tomography angiography (OCT-A) allows noninvasive visualization of retinal vessels in vivo. (arvojournals.org)
  • Fluorescein dye is injected intravenously, usually through an antecubital vein with sufficient speed to produce high contrast images of the early phases of the angiogram. (aao.org)
  • Most patients who undergo fluorescein angiogram do not experience significant side effects. (cityeye.com.au)
  • An eye angiogram uses fluorescein dye and a camera to take pictures and evaluate the blood flow through the vessels in the back of the eye (retina). (legazpieye.com)
  • The process of the fluorescein angiogram process will be covered including the dosage, injection, and possible adverse reactions from the injection. (jcahpo.org)
  • The fluorescein angiogram sequencing and steps for completing the photography side of the procedure. (jcahpo.org)
  • The course will finish with the phases of the angiogram and descriptive terminology used to describe fluorescein angiography photographs. (jcahpo.org)
  • The precise location of these abnormalities can be determined by a careful interpretation of the fluorescein angiogram by your ophthalmologist. (drrobpiemontesi.com)
  • What to expect on the day of your fluorescein angiogram? (drrobpiemontesi.com)
  • A fluorescein angiogram is a picture of the retina and helps show abnormal blood vessel growth and other conditions. (retinaoc.com)
  • An ICG angiogram can sometimes locate abnormal choroidal vessels better than a fluorescein angiogram however an ICG is not recommended for patients with an allergy to iodine. (launcestoneye.com.au)
  • A Fluorescein Angiogram (FA) or Intravenous Fluorescein Angiogram (IVF) is a diagnostic test that is used to study the retinal blood vessels and circulation of blood in the retina. (bweyecenter.com)
  • Fluorescein angiogram of left macula in patient with hydroxychloroquine retinopathy. (buyflagylcheap.com)
  • Fluorescein angiography is the practice of taking photographs of blood vessels inside the eye (an angiogram) with the help of a contrast dye (fluorescein dye). (midhudsonretina.com)
  • Radial access technique for angiography can be traced back to 1953, where Eduardo Pereira[clarification needed] first cannulated the radial artery to perform a coronary angiogram. (wikipedia.org)
  • We performed a prospective interventional study to assess the effects of ultra-wide field fluorescein angiography (UWFFA) guided targeted retinal photocoagulation (TRP) in diabetic retinopathy. (arvojournals.org)
  • Because the fluorescein angiography procedure described here allows intraoperative confirmation of the patency of perforating arteries located deep inside the surgical field, it can be practically used for preventing unexpected cerebral infarction during aneurysm surgery. (thejns.org)
  • Fluorescein angiography is a medical procedure used in the diagnosis of retinal problems. (legazpieye.com)
  • Patients who have blood clotting problems, have a known allergy to contrast mediums, or are allergic to iodine, a component of some contrast mediums, may also not be suitable candidates for an angiography procedure. (encyclopedia.com)
  • Depending on the type of angiography procedure being performed, the contrast medium is either injected by hand with a syringe or is mechanically injected with an automatic injector connected to the catheter. (encyclopedia.com)
  • While serious reactions are very rare, at Eye Care on 5th we believe in ensuring that our patients are fully aware of all risks, however minor, when it comes to the Fluorescein Angiography procedure. (eyecarenewyork.com)
  • This is a technique that enables the observation of the vessels of the retina using a series of photographs taken after an intravenous injection of fluorescein. (specsavers.co.uk)
  • The intravenous injection of fluorescein is done just after having changed the color camera by the black and white one. (vin.com)
  • CASE HISTORY: A 64-year-old woman experienced erythema on her face and neck, dyspnea, hypotension and loss of consciousness immediately after injection of fluorescein for angiography. (koreamed.org)
  • It is a test that involves the intravenous injection of fluorescein dye, followed by imaging of the dye's passage through the blood vessels inside the eye. (clinicaltrials.gov)
  • Fluorescein angiography involves having an injection of dye into one of your veins (usually your arm) before scanning equipment takes a series of time-lapse photographs of the back of your eye. (thelondonclinic.co.uk)
  • The recirculation phase occurs approximately 3-5 minutes after injection of fluorescein. (aao.org)
  • The microcirculation of BCC and a normal (control) skin site was studied in 15 patients by laser Doppler fluximetry and videoangiography after rapid i.v. fluorescein injection. (aacrjournals.org)
  • Fluorescein angiography is a photographic test performed to examine the retina at the back of your eyes using a special camera and taking multiple, serial photographs, coupled with a small injection of a special fluorescein dye into a vein in your arm. (cityeye.com.au)
  • Angiography requires the injection of a contrast dye that makes the blood vessels visible to x ray. (encyclopedia.com)
  • Syringe 5 cc., one for the injection of fluorescein and another to fill it with 5 ml. of saline (to happen later fluorescein injection, so there are no crystals of the above product. (ophthalmicphotography.net)
  • Among the common groups of ophthalmologic disease, fluorescein angiography can detect diabetic retinopathy (neovascularization), vein occlusions, retinal artery occlusions, edema of the optic disc, and tumors. (wikipedia.org)
  • Researchers examined 124 eyes (63 patients) with diabetic retinopathy and 23 control eyes with fluorescein angiography (FA) and high-speed Fourier-domain optical coherence tomography (OCT). Among the 62 eyes with diabetic retinopathy and FA evidence of either foveal avascular zone (FAZ) damage higher than grade 1 or FAZ capillary loss, OCT detected damage with a positive predictive value of 84.5 percent and negative predictive value of 72.9 percent. (aao.org)
  • Fluorescein angiography is a great way to look at the vasculature in retinopathy of prematurity, but it has its limitations: the expense of the machine, the necessity of having intravenous access on the infant, the systemic stability of the infant and the presence of a well-formed tunica vasculosa. (healio.com)
  • It is certainly possible to perform thorough retinopathy of prematurity follow-up exams without the assistance of intravenous fluorescein angiography. (healio.com)
  • Color photography vs fluorescein angiography in the detection of diabetic retinopathy in the diabetes control and complications trial. (nih.gov)
  • During eligibility screening for the Diabetes Control and Complications Trial, we compared stereoscopic color fundus photography and stereoscopic fluorescein angiography in the detection of diabetic retinopathy in 320 patients (mean age, 24 years [SD, eight years]) with insulin-dependent diabetes (mean duration, 7.0 years [SD, 4.0 years]) and no or mild diabetic retinopathy. (nih.gov)
  • Of 153 patients classified as having no retinopathy according to color photographs of seven standard 30 degrees fields of both eyes, 21% of the patients had evidence of retinopathy (mostly one or two microaneurysms in one eye) on review of fluorescein angiograms, including two standard 30 degrees fields in each eye. (nih.gov)
  • When used in conjunction with color photography, angiography allows a modest increase in sensitivity to the earliest signs of retinopathy, a gain potentially useful in some research applications, although not of demonstrated value in patient management. (nih.gov)
  • Purpose To examine the influence of fluorescein angiography (FA) on the diagnosis and management of retinopathy of prematurity (ROP). (elsevier.com)
  • Ischaemia or edema in the retina circulation can be detected with the help of fluorescein angiography. (targetwoman.com)
  • Without the help of fluorescein angiography, your ophthalmologist would not be able to throughly diagnose these and other abnormalities. (drrobpiemontesi.com)
  • Quantitative analysis of peripheral vasculitis, ischemia, and vascular leakage in uveitis using ultra-widefield fluorescein angiography. (medlineplus.gov)
  • Fluorescein angiography (FA) has long been the gold standard for vascular imaging of the retina and choroid. (clinicaltrials.gov)
  • Fluorescein angiography (FA) is a diagnostic imaging modality to visualize abnormalities in retinal and choroidal circulation such as vascular leakage. (nih.gov)
  • Ultra-widefield fluorescein angiography (UWFA) is an emerging imaging modality used to characterise pathology in the retinal vasculature such as microaneurysms (MAs) and vascular leakage. (ovid.com)
  • OCT-A was used to characterize the vascular network of the mouse retina and was compared with fluorescein angiography (FA) and histology. (arvojournals.org)
  • Fundus fluorescein angiography was used as an important diagnostic tool to show exact location and extent of vascular changes of PPDR. (quotery.com)
  • The term angiography has been applied to radionuclide angiography and newer vascular imaging techniques such as CO2 angiography, CT angiography and MR angiography. (wikipedia.org)
  • Doctors choose fluorescein angiography to study diseases of the retinal and choroidal blood vessels within the eye. (neretina.com)
  • The next step is to stimulate the contents of the blood mixed with the fluorescein, emitting an intense light that allows a photograph to be taken of the circulation of the retinal and choroidal blood vessels. (institutmacula.com)
  • Many diagnostic features are often best identified with Fluorescein angiography. (eurekamag.com)
  • Fluorescein Angiography is a topic covered in the Davis's Lab & Diagnostic Tests . (unboundmedicine.com)
  • Nursing Central , nursing.unboundmedicine.com/nursingcentral/view/Davis-Lab-and-Diagnostic-Tests/425360/all/Fluorescein_Angiography. (unboundmedicine.com)
  • Fluorescein Angiography is a diagnostic test that aids visualization of the blood circulation in the retina and choroid. (targetwoman.com)
  • Therefore, either used with another diagnostic method or by itself, Dr. Kaushal may perform fluorescein angiography (also known as retinal photography). (comprehensiveretinaconsultants.com)
  • With the latest technology, digital angiography and photography provide instant and accurate results viewable on a computer monitor or by hard copy from a photographic printer. (hretina.com)
  • Fluorescein angiography (FA), fluorescent angiography (FAG), or fundus fluorescein angiography (FFA) is a technique for examining the circulation of the retina and choroid (parts of the fundus) using a fluorescent dye and a specialized camera. (wikipedia.org)
  • The dye used in fluorescein angiography is a fluorescent substance that passes through your blood circulation, including through the blood vessels in the retina. (thelondonclinic.co.uk)
  • Angiographically positive, but not negative, areas demonstrated intrascleral lumens with anterior segment OCT. Aqueous angiography with fluorescent dextrans led to their trapping in AHO pathways. (arvojournals.org)
  • 4 - 18 Aqueous angiography is a form of anterior segment fluorescent angiography 19 that has been reported recently as a real-time AHO imaging method in model pig and human eyes. (arvojournals.org)
  • Fluorescein angiography Fluorescein angiography is a test which allows the blood vessels in the back of the eye to be photographed as a fluorescent dye is injected into the bloodstream via your hand or arm. (arizonaretinalspecialists.com)
  • The next step involves the fluorescent dye (fluorescein), which is injected into a vein to enter your bloodstream. (comprehensiveretinaconsultants.com)
  • Fluorescein angiography (IVFA) or fluorescent angiography is another specialized eye test offered by opthalmologists at Eye Care on 5th , and is an essential tool in the diagnosis and treatment of retinal disorders. (eyecarenewyork.com)
  • Aqueous angiography in cow eyes with fluorescein and ICG yielded high-quality images with segmental patterns. (arvojournals.org)
  • Fluorescein angiography was pioneered by German ophthalmologist Achim Wessing, who published his findings in 1969. (wikipedia.org)
  • If after examining your eyes, your ophthalmologist suspects abnormalities in the back of the eye, he or she may recommend fluorescein angiography. (drrobpiemontesi.com)
  • Fluorescein angiography (FA) is when your ophthalmologist uses a special camera to take pictures of your retina . (retinaoc.com)
  • Fluorescein angiographies were performed in 65 patients with peripheral uveitis. (biomedsearch.com)
  • Novel automated processing techniques of fluorescein angiography (FA) images in patients with Uveitis. (nih.gov)
  • Kesav N, Yang Q, Losert W, Kim J, Jaeger S, Sen HN Novel automated processing techniques of fluorescein angiography (FA) images in patients with Uveitis. (nih.gov)
  • Optos PLC, Dunfermline, Scotland, United Kingdom) performs ultra wide angle fluorescein angiography and its benefit in uveitis was reviewed. (eurekamag.com)
  • In this division ultra wide field angiography has become the investigation of choice (over traditional angiography) in cases of intermediate and posterior uveitis. (eurekamag.com)
  • This course will discuss the basics of fluorescein angiography starting with luminescence and fluorescence and how it can be used in the eye. (jcahpo.org)
  • Describe fluorescence with respect to fluorescein angiography. (jcahpo.org)
  • These are descriptive terms that refer to the relative brightness of fluorescence in comparison with a normal retinal angiography study. (bweyecenter.com)
  • This book is a practical guide to fluorescein angiography. (waterstones.com)
  • Fluorescein angiography is an eye test which uses a specialized fundus camera system to take a series of photographs of the retina. (specialtyretina.com)
  • Causes of hyperfluorescence: window/transmission (filling) defects leaking defects (i.e. capillary leakage, aneurysm, neovascularization) pooling defects staining abnormal vasculature Causes of hypofluorescence: blocking defect (i.e. blood) filling defect (capillary nonperfusion/blockage) Fluorescein angiography is used by physicians specializing in the treatment of eye diseases (ophthalmologists) to evaluate the vasculature of the retina, choroid, optic disc, and iris. (wikipedia.org)
  • In order to find abnormal blood vessels under the retina and/or to identify conditions that can cause retinal swelling and reduced vision, it is sometimes necessary to perform a test called angiography. (neretina.com)
  • Fluorescein angiography records the dynamic interaction of fluorescein with both normal and abnormal anatomic structures of the ocular fundus. (quotery.com)
  • The authors performed fluorescein cerebral angiography in patients after aneurysm clip placement to confirm the patency of the parent artery, perforating artery, and other arteries around the aneurysm. (thejns.org)
  • Illustration and photographs showing the setup for intraoperative fluorescein cerebral angiography. (thejns.org)
  • Play media The technique was first developed in 1927 by the Portuguese physician and neurologist Egas Moniz at the University of Lisbon to provide contrasted X-ray cerebral angiography in order to diagnose several kinds of nervous diseases, such as tumors, artery disease and arteriovenous malformations. (wikipedia.org)
  • Fluorescein Angiography enables location of the exact point of fluid leakage. (targetwoman.com)
  • Fluorescein angiography may demonstrate leakage in areas remote from the retinal infarctions. (wikipedia.org)
  • In the first one to two minutes, the images produced by fluorescein angiography show how the dye passes through the arteries that supply your retina. (thelondonclinic.co.uk)
  • Arteriography is a type of angiography that involves the study of the arteries. (encyclopedia.com)
  • Catheter - A long, thin, flexible tube used in angiography to inject contrast material into the arteries. (thefreedictionary.com)
  • Angiography or arteriography is a medical imaging technique used to visualize the inside, or lumen, of blood vessels and organs of the body, with particular interest in the arteries, veins, and the heart chambers. (wikipedia.org)
  • Multifocal electroretinography and fluorescein angiography in retinal vein occlusion. (lu.se)
  • Fluorescein angiography is a dynamic method to explore the fundus vasculature and tissues. (vin.com)
  • Fluorescein angiography is an eye test that uses a special dye and camera to look at blood flow in the retina and choroid . (medlineplus.gov)
  • Fluorescein angiography in inflammation of the peripheral fundus: involvement of the choroid and retina. (biomedsearch.com)
  • 0000003078 00000 n For nearly 50 years, fundus photography and fluorescein angiography have been valuable in expanding our knowledge of the anatomy, pathology, and pathophysiology of the retina and choroid. (quotery.com)
  • When diagnosing problems with the choroid or the retina, fluorescein and ICG angiography are effective tools that Dr. Kaushal uses for his Ocala, FL patients. (comprehensiveretinaconsultants.com)
  • Fluorescein angiography is an eye test that is used to detect blood circulation problems in the retina and choroid, structures that are located in the back of your eyes. (wellingtonvision.com)
  • In the year 1969, F. Lescure presented the first results concerning fluorescein angiography of the ocular fundus in animals. (vin.com)
  • Fluorescein angiography: basic principles and interpretation. (medlineplus.gov)
  • All patients in the group with better visual outcome needed fewer PDT treatments compared with our control group of patients with an exudative AMD.Interpretation: Simultaneous FA/ICG angiography using the HRA 2 allowed delineation of a subgroup of patients with PCV who showed a better visual outcome compared with those with other types of exudative AMD, after treatment with PDT. (uzh.ch)
  • visualisation, perception, and appreciation of fundus fluorescein angiography interpretation process in order to facilitate the novice ophthalmologists to follow a systematic, orderly and logical line of reasoning that leads to a proper diagnosis. (quotery.com)
  • 1. Fluorescein angiography of the fundus: a schematic approach to interpretation. (quotery.com)
  • Fluorescein Angiography: Technique, Interpretation, and Application (Oxford Medical Publications) by Nanjiani, Max and a great selection of related books, art and collectibles available now at This unique atlas provides a comprehensive and up-to-date overview of FAF imaging in retinal diseases. (driftwood-dallas.com)
  • Fluorescein is a water-soluble dye that is injected into a vein in the patient's arm. (targetwoman.com)
  • In addition, posterior pole findings, including vessels encroaching on or crossing the fovea, have also been demonstrated on intravenous fluorescein angiography. (healio.com)
  • After 10 minutes fluorescein is usually no longer seen in retinal vessels however several structures including the optic nerve head, Bruch's membrane, and sclera are stained with fluorescein and continue to fluoresce. (aao.org)
  • Angiography is the x-ray study of the blood vessels. (encyclopedia.com)
  • Angiography is used to detect abnormalities or blockages in the blood vessels (called occlusions) throughout the circulatory system and in some organs. (encyclopedia.com)
  • Angiography can be used to detect abnormalities in the performance of the blood vessels, structural defects in their walls, the appearance of new vessels and incipient retinal detachment. (institutmacula.com)
  • Fluorescein dye - An orange dye used to illuminate the blood vessels of the retina in fluorescein angiography. (thefreedictionary.com)
  • A normal Fluorescein Angiography result will show the vessels to appear a normal size, with absence of leakages or blockages. (eyecarenewyork.com)
  • When the digital camera is used with certain light filters, fluorescein will highlight blood vessels and most areas of retinal disease. (hretina.com)
  • BACKGROUND: Fluorescein angiography is the standard tool for the diagnosis of vitreoretinal diseases. (koreamed.org)
  • Since its introduction in the early 1960's, fluorescein angiography has proved to be an essential tool for diagnosis of many retinal disorders. (jcahpo.org)
  • During fluorescein angiography, there are many steps Dr. Kaushal will take to make a diagnosis. (comprehensiveretinaconsultants.com)
  • What are the risks of fluorescein angiography? (drrobpiemontesi.com)
  • Are There Side Effects and Risks from Fluorescein Angiography? (retinaoc.com)
  • Our staff will review the potential risks and complications of Fluorescein Angiography with you and answer all of your questions prior to your study. (bweyecenter.com)
  • After your angiography, your skin and urine may appear discolored for a short time until the Fluorescein is completely out of your system. (centerforeyecare.com)
  • Full title and Atlas of Fundus Fluorescein Angiography book is FLUORESCEIN AND ICG ANGIOGRAPHY TEXTBOOK AND ATLAS written by Gisbert Richard with the cooperation of Gisele Soubrane and Lawrence A. Yannuzzi, 2nd revised and expanded edition, Pub by Thieme. (driftwood-dallas.com)
  • Fluorescein angiography is an important technique used when first diagnosing eye diseases that affect the retina. (thelondonclinic.co.uk)
  • Two medical students from Indiana University, H.R. Novotny and D.L. Alvis, described and demonstrated the technique of retinal fluorescein angiography (FA) in 1961. (aao.org)
  • Attention2AngioGAN: Synthesizing Fluorescein Angiography from Retinal Fundus Images using Generative Adversarial Networks Sharif Amit Kamran , Khondker Fariha Hossainy, Alireza Tavakkolizand Stewart Lee Zuckerbrodx z University of Nevada, Reno NV, USA yDeakin University Melbourne, Australia xHouston Eye Associates Houston, TX, USA [email protected] , [email protected] , … Fig.3 Principles of Fluorescein Angiography: Equipment and Technique. (quotery.com)
  • In summary, Atlas of Fundus Angiography is an up-to-date and lavishly illustrated book that is an indispensable tool for clinicians of all levels seeking to master a fundamental technique. (driftwood-dallas.com)
  • Free Download Link: Fluorescein Angiography - EyeWiki e-book description Fundus fluorescein angiography is a technique for examining the circulation of the retina using a dye tracing method. (driftwood-dallas.com)
  • Two medical students from Indiana University, H.R. Novotny and D.L. Alvis, described and demonstrated the technique of retinal fluorescein angiography (FA) in [1] John Donald McIntyre Gass began publishing his experience with FA in and his efforts led to the wider acceptance of the technique in the evaluation of retinal disease. (driftwood-dallas.com)
  • For all structures except the heart, the images are usually taken using a technique called digital subtraction angiography or DSA. (wikipedia.org)
  • For the realization of fluorescein angiography, the first is to ask the patient if one has been subjected some other angiography or contrast test, inquiring about possible allergic Likewise Background and Adverse Reactions. (ophthalmicphotography.net)
  • Allergic reactions to fluorescein dye are rare. (drrobpiemontesi.com)
  • Although it is rare, there is a risk that you could have an allergic reaction to the fluorescein dye. (retinaoc.com)
  • There is little risk in having fluorescein angiography, though some people may have mild allergic reactions to the dye. (maculaandretinainstitute.com)
  • Being allergic to X-ray dyes with iodine does not mean you will be allergic to fluorescein. (maculaandretinainstitute.com)
  • There is little risk in having fluorescein angiography, though some people may have mild allergic reactions to the dye that can cause itching, excessive sneezing, flushing of skin and nausea. (centerforeyecare.com)
  • Administering fluorescein orally greatly reduces the risk of allergic reactions. (hey.nhs.uk)
  • CONCLUSION: Based on her symptoms and the skin prick test result, the patient was diagnosed with fluorescein-induced anaphylaxis. (koreamed.org)
  • Fluorescein angiography is a clinical test to look at blood circulation in the retina at the back of the eye. (centerforeyecare.com)
  • During the test, a harmless orange-red dye called Fluorescein will be injected into a vein in your arm. (centerforeyecare.com)
  • Fluorescein is reported to be safe in pregnancy, but we prefer to avoid this test in pregnant patients where possible. (launcestoneye.com.au)
  • Fluorescein angiography is a simple and short test that is performed in your doctor's office. (wellingtonvision.com)
  • Fluorescein angiography, sometimes referred to as a 'dye test', is an investigation where a series of photos are taken prior to and following a drink containing orange juice and a small amount of yellow dye. (hey.nhs.uk)
  • Fluorescein angiography is a test to measure the flow of blood in the back of your eye. (nuffieldhealth.com)
  • Both patients underwent fluorescein retinal angiography that demonstrated multifocal retinal artery occlusions without evidence of embolic disease. (wikipedia.org)
  • Patients with kidney disease or injury may suffer further kidney damage from the contrast mediums used for angiography. (encyclopedia.com)
  • This course will provide an overview of the use of fluorescein for diagnosing eye related diseases and conditions and include appropriate doses for adult and pediatric patients. (jcahpo.org)
  • In this case report, three adult patients (ages 39 years, 62 years, and 64 years) with a history of prematurity underwent imaging with ultra-widefield fluorescein angiography (UWFFA). (elsevier.com)
  • Here, 12 patients were followed up for 1-5 years with fundus fluorescein angiography (FFA) to clarify BCD disease development and its classification. (researchsquare.com)
  • Fluorescein angiography is carried out to help diagnose problems with the eye. (moorfields.nhs.uk)
  • Mar 01, 2011 Fluorescein angiography demonstrated bilateral bull's eye-type pigmentary abnormalities Figures 7-8. (buyflagylcheap.com)
  • The ability to describe the natural history of both treated and untreated ROP and combining clinical findings and fluorescein angiography and OCT all provide important information. (healio.com)
  • Subjects will receive fluorescein angiography (FA) as part of their normal clinical evaluation and will undergo phase variance optical coherence tomography (PV-OCT) as the study intervention. (clinicaltrials.gov)
  • Results.Conclusions.Smaller baseline CNV size on ICG angiography resulted in better visual acuity and fewer injections at 12 months, and a reduction of 33% or more in CNV size after 2 months may predict a better clinical course in subjects with idiopathic CNV undergoing bevacizumab therapy. (nih.gov)
  • Clinical decision making for a variety of retinal diseases depends on fluorescein angiography. (hretina.com)
  • A newer method called ultra-widefield fluorescein angiography can provide more information about certain diseases than regular angiography. (medlineplus.gov)
  • Fluorescein (a yellow synthetic dye) angiography may also be used to enhance the digital photographs in certain retinal diseases. (hretina.com)
  • Blood flow problems shown on fluorescein angiography may suggest blood flow problems in other parts of the body. (medlineplus.gov)
  • Coronary angiography can visualize coronary artery stenosis, or narrowing of the blood vessel. (wikipedia.org)
  • A bright yellow- green dye, called 'fluorescein' is injected into a vein in the arm. (tripod.com)
  • After the first group of pictures is taken, a dye called fluorescein is injected into a vein. (medlineplus.gov)
  • A special camera is used to take a series of photographs of the retina after a small amount of yellow dye (fluorescein) is injected into a vein in your arm. (seebetterbrevard.com)
  • Then, after a harmless dye (fluorescein) has been injected into a vein, another set of photos will be taken. (eyecarenewyork.com)
  • Fluorescein is injected into a vein in the arm and circulates quickly to the eye. (hretina.com)