Method of making images on a sensitized surface by exposure to light or other radiant energy.
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)
Photographic techniques used in ORTHODONTICS; DENTAL ESTHETICS; and patient education.
Examination of the interior of the eye with an ophthalmoscope.
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.
Agents that dilate the pupil. They may be either sympathomimetics or parasympatholytics.
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.
Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.
The blood vessels which supply and drain the RETINA.
Making measurements by the use of stereoscopic photographs.
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.
Optic disk bodies composed primarily of acid mucopolysaccharides that may produce pseudopapilledema (elevation of the optic disk without associated INTRACRANIAL HYPERTENSION) and visual field deficits. Drusen may also occur in the retina (see RETINAL DRUSEN). (Miller et al., Clinical Neuro-Ophthalmology, 4th ed, p355)
Diseases affecting the eye.
Passage of light through body tissues or cavities for examination of internal structures.
A surgical specialty concerned with the structure and function of the eye and the medical and surgical treatment of its defects and diseases.
Devices for examining the interior of the eye, permitting the clear visualization of the structures of the eye at any depth. (UMDNS, 1999)
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)
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.
A dental specialty concerned with the prevention and correction of dental and oral anomalies (malocclusion).
A medical specialty concerned with the skin, its structure, functions, diseases, and treatment.
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.
Recording of electric potentials in the retina after stimulation by light.
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.
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.
A noninvasive technique that enables direct microscopic examination of the surface and architecture of the SKIN.
Application of tests and examinations to identify visual defects or vision disorders occurring in specific populations, as in school children, the elderly, etc. It is differentiated from VISION TESTS, which are given to evaluate/measure individual visual performance not related to a specific population.
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.
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.
Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed)
The branch of surgery concerned with restoration, reconstruction, or improvement of defective, damaged, or missing structures.
A ready-made or custom-made prosthesis of glass or plastic shaped and colored to resemble the anterior portion of a normal eye and used for cosmetic reasons. It is attached to the anterior portion of an orbital implant (ORBITAL IMPLANTS) which is placed in the socket of an enucleated or eviscerated eye. (From Dorland, 28th ed)
Method of measuring and mapping the scope of vision, from central to peripheral of each eye.
That portion of the electromagnetic spectrum usually sensed as heat. Infrared wavelengths are longer than those of visible light, extending into the microwave frequencies. They are used therapeutically as heat, and also to warm food in restaurants.
Interactions between hospital staff or administrators and patients. Includes guest relations programs designed to improve the image of the hospital and attract patients.
A form of MACULAR DEGENERATION also known as dry macular degeneration marked by occurrence of a well-defined progressive lesion or atrophy in the central part of the RETINA called the MACULA LUTEA. It is distinguishable from WET MACULAR DEGENERATION in that the latter involves neovascular exudates.
Measurement of distances or movements by means of the phenomena caused by the interference of two rays of light (optical interferometry) or of sound (acoustic interferometry).
The acidic subunit of beta-crystallins.
Pieces of glass or other transparent materials used for magnification or increased visual acuity.
The total area or space visible in a person's peripheral vision with the eye looking straightforward.
The use of green light-producing LASERS to stop bleeding. The green light is selectively absorbed by HEMOGLOBIN, thus triggering BLOOD COAGULATION.
Slender processes of NEURONS, including the AXONS and their glial envelopes (MYELIN SHEATH). Nerve fibers conduct nerve impulses to and from the CENTRAL NERVOUS SYSTEM.
Defects of color vision are mainly hereditary traits but can be secondary to acquired or developmental abnormalities in the CONES (RETINA). Severity of hereditary defects of color vision depends on the degree of mutation of the ROD OPSINS genes (on X CHROMOSOME and CHROMOSOME 3) that code the photopigments for red, green and blue.
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.
A pathological process consisting of the formation of new blood vessels in the CHOROID.
A transparent, biconvex structure of the EYE, enclosed in a capsule and situated behind the IRIS and in front of the vitreous humor (VITREOUS BODY). It is slightly overlapped at its margin by the ciliary processes. Adaptation by the CILIARY BODY is crucial for OCULAR ACCOMMODATION.
Conditions which produce injury or dysfunction of the second cranial or optic nerve, which is generally considered a component of the central nervous system. Damage to optic nerve fibers may occur at or near their origin in the retina, at the optic disk, or in the nerve, optic chiasm, optic tract, or lateral geniculate nuclei. Clinical manifestations may include decreased visual acuity and contrast sensitivity, impaired color vision, and an afferent pupillary defect.
Albinism affecting the eye in which pigment of the hair and skin is normal or only slightly diluted. The classic type is X-linked (Nettleship-Falls), but an autosomal recessive form also exists. Ocular abnormalities may include reduced pigmentation of the iris, nystagmus, photophobia, strabismus, and decreased visual acuity.
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.
An exudate between the RETINA and CHOROID from various sources including the vitreous cavity, SUBARACHNOID SPACE, or abnormal vessels.
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)
The branch of philosophy dealing with the nature of the beautiful. It includes beauty, esthetic experience, esthetic judgment, esthetic aspects of medicine, etc.
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.
The pressure of the fluids in the eye.
A field of anatomical pathology in which living tissue is surgically removed for the purpose of diagnosis and treatment.
Disorders of the choroid including hereditary choroidal diseases, neoplasms, and other abnormalities of the vascular layer of the uvea.
Bleeding from the vessels of the retina.
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.
The illumination of an environment and the arrangement of lights to achieve an effect or optimal visibility. Its application is in domestic or in public settings and in medical and non-medical environments.
The visually perceived property of objects created by absorption or reflection of specific wavelengths of light.
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)
A tricarbocyanine dye that is used diagnostically in liver function tests and to determine blood volume and cardiac output.
An ocular disease, occurring in many forms, having as its primary characteristics an unstable or a sustained increase in the intraocular pressure which the eye cannot withstand without damage to its structure or impairment of its function. The consequences of the increased pressure may be manifested in a variety of symptoms, depending upon type and severity, such as excavation of the optic disk, hardness of the eyeball, corneal anesthesia, reduced visual acuity, seeing of colored halos around lights, disturbed dark adaptation, visual field defects, and headaches. (Dictionary of Visual Science, 4th ed)
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.
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.
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.
The art, technique, or business of producing motion pictures for entertainment, propaganda, or instruction.
Blockage of the RETINAL VEIN. Those at high risk for this condition include patients with HYPERTENSION; DIABETES MELLITUS; ATHEROSCLEROSIS; and other CARDIOVASCULAR DISEASES.
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.
Imaging methods that result in sharp images of objects located on a chosen plane and blurred images located above or below the plane.
The administration of substances into the eye with a hypodermic syringe.
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.
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)
The aperture in the iris through which light passes.
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 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.
A condition in which the intraocular pressure is elevated above normal and which may lead to glaucoma.
A membrane on the vitreal surface of the retina resulting from the proliferation of one or more of three retinal elements: (1) fibrous astrocytes; (2) fibrocytes; and (3) retinal pigment epithelial cells. Localized epiretinal membranes may occur at the posterior pole of the eye without clinical signs or may cause marked loss of vision as a result of covering, distorting, or detaching the fovea centralis. Epiretinal membranes may cause vascular leakage and secondary retinal edema. In younger individuals some membranes appear to be developmental in origin and occur in otherwise normal eyes. The majority occur in association with retinal holes, ocular concussions, retinal inflammation, or after ocular surgery. (Newell, Ophthalmology: Principles and Concepts, 7th ed, p291)
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).
The thin, highly vascular membrane covering most of the posterior of the eye between the RETINA and SCLERA.
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)
Hereditary, progressive degeneration of the neuroepithelium of the retina characterized by night blindness and progressive contraction of the visual field.
Type of vision test used to determine COLOR VISION DEFECTS.
Examination of the angle of the anterior chamber of the eye with a specialized optical instrument (gonioscope) or a contact prism lens.
Glaucoma in which the angle of the anterior chamber is open and the trabecular meshwork does not encroach on the base of the iris.
The storing or preserving of video signals for television to be played back later via a transmitter or receiver. Recordings may be made on magnetic tape or discs (VIDEODISC RECORDING).

Evaluation of lidocaine as an analgesic when added to hypertonic saline for sclerotherapy. (1/1386)

PURPOSE: The efficacy of sclerosing agents for the treatment of telangiectasias and reticular veins is well established. The injection of these agents is often associated with pain, and it is not uncommon for sclerotherapists to include lidocaine with the sclerosants in an attempt to reduce the pain associated with treatment. However, there are concerns that this may reduce the overall efficacy of the treatment because of dilution of the sclerosant. Patient comfort and overall outcome associated with treatment using HS with lidocaine (LIDO) versus that using HS alone was compared. METHODS: Forty-two patients were prospectively entered into the study and randomized blindly to sclerotherapy with 23.4% HS or 19% LIDO. Study subjects and treating physicians were blinded to the injection solution used. Injection sites were chosen for veins ranging in size from 0.1 to 3 mm. Photographs of the area to be treated were taken, and the patients rated their pain. They were then observed at regular intervals for four months, and clinical data was collected. Thirty-five subjects completed the full follow-up period, and photographs of the injected area were taken again. Three investigators blinded to the treatment assignment then evaluated the photographs and scored the treatment efficacy according to a standardized system. RESULTS: In the HS group, 61.9% (13 of 21) patients rated their pain as none or mild, whereas 90.5% (19 of 21) of patients in the LIDO group had no or mild discomfort. This difference is significant, with a P value of.034. There was no difference in the overall efficacy of treatment between the two groups. The groups had similar rates of vein thrombosis and skin necrosis. CONCLUSION: Although lidocaine is often used with sclerosing agents, there are no previous reports in the literature to evaluate its effectiveness in reducing the pain experienced by the patient. In this study, patients receiving LIDO experienced significantly less discomfort at the time of injection than patients who received HS alone. There were no differences in the effectiveness of treatment or in the incidence of complications between the two groups.  (+info)

Blood flow influences vascular growth during tumour angiogenesis. (2/1386)

Many factors play a role in tumour angiogenesis. We observed growing tumour vessels in vivo to study the relationship between blood flow and vascular enlargement. Mammary adenocarcinoma was implanted into Fisher-344 rat with dorsal skin-fold transparent chambers. Vascular growth was observed and recorded on videotape through a microscope for 6 h. Vascular networks were photographed and traced every 30 min to identify changes over time. Tumour sections were stained with Masson's trichrome and anti-Factor VIII-related antigen. Tumour growth was rapid enough for differences to be seen each hour. Vessels with a high blood flow showed an increase in diameter within a few hours and new branches formed from these vessels. In contrast, vessels without an increase in blood flow showed no change in diameter. Vessels within the interstitium surrounding the tumour were lined by endothelium that was positive for anti-Factor VIII-related antigen staining. Vessels in the tumour had extremely rare endothelial cells detectable by Masson's trichrome or anti-Factor VIII-related antigen staining. In conclusion, increased blood flow may cause vascular enlargement and some primitive vessels seem to lack endothelium.  (+info)

Reflective meniscometry: a non-invasive method to measure tear meniscus curvature. (3/1386)

AIMS: To devise a method to measure tear meniscus curvature by a non-invasive specular technique. METHODS: A photographic system was devised. The system consisted of a camera and an illuminated target with a series of black and white stripes oriented parallel to the axis of the lower tear meniscus. The target was mounted on a flash gun close to the objective of a Brown macrocamera and calibrated using a graduated series of glass capillaries of known diameter, ground down to expose the inner wall. It was then applied to normal human eyes (n = 45) to measure the tear meniscus curvature. A video system was also assessed which provided qualitative online information about the tear meniscus. RESULTS: Using the photographic system, measured values for capillary radii were in excellent agreement with theoretical calculations (r2 = 0.996, p < 0.0001). The radii of curvature of lower tear menisci in normal human subjects (mean 0.365 (SD 0.153) mm, range 0.128-0.736; n = 45) were similar to those reported in the literature. Both systems demonstrated variations in meniscus shape. The video system provided stable images of human menisci over prolonged periods of time and promises to be useful for the analysis of dynamic changes in meniscus volume. CONCLUSIONS: Reflective meniscometry is a non-invasive technique providing quantitative information about tear meniscus shape and volume and of potential value in the study of ocular surface disease.  (+info)

Comparison of the cost-effectiveness of three approaches to screening for and treating sight-threatening diabetic retinopathy. (4/1386)

The purpose of this study was to analyse and compare the costs involved in screening for and treating sight-threatening diabetic retinopathy in three different clinical settings. In the first setting, diabetologists screened using ophthalmoscopy and color photography, according to the St. Vincent Declaration guidelines, and selected patients for further assessment by a visiting ophthalmologist and for treatment in another hospital. In the second setting, all patients were regularly referred to ophthalmologists, either in the same hospital or elsewhere, for all aspects of eye care. In the third setting, screening was done again with ophthalmoscopy alone by diabetologists who followed the St. Vincent Declaration guidelines; however, further assessment and treatment were carried out in the eye department of the same hospital. Costs to the Italian National Health Service and to patients were calculated per screening performed and per patient subjected to laser treatment as a result of screening. A sensitivity analysis was then performed to simulate the costs of standardised patient populations going through the three different settings. It is concluded that absolute costs would be lower, both for the Italian National Health Service and for patients, if screening, assessment and treatment were all carried out in the same hospital. Equipping a diabetic clinic specially for screening would not be more expensive than delegating eye care to external parties, even for a hospital without an eye department. Moreover, delegating eye care more than doubles costs for patients. Screening for, assessing and treating sight-threatening diabetic retinopathy may be a cost-effective procedure for society as a whole in Italy.  (+info)

Inter- and intraobserver variation in the analysis of optic disc images: comparison of the Heidelberg retina tomograph and computer assisted planimetry. (5/1386)

AIMS: The development of imaging and measurement techniques has brought the prospect of greater objectivity in the measurement of optic disc features, and therefore better agreement between observers. The purpose of this study was to quantify and compare the variation between observers using two measurement devices. METHODS: Optic disc photographs and images from the Heidelberg retina tomograph (HRT) of 30 eyes of 30 subjects were presented to six observers for analysis, and to one observer on five separate occasions. Agreement between observers was studied by comparing the analysis of each observer with the median result of the other five, and expressed as the mean difference and standard deviation of differences between the observer and the median. Inter- and intraobserver variation was calculated as a coefficient of variation (mean SD/mean x 100). RESULTS: For planimetry, agreement between observers was dependent on observer experience, for the HRT it was independent. Agreement between observers (SD of differences as a percentage of the median) for optic disc area was 4.0% to 7.2% (planimetry) and 3.3% to 6.0% (HRT), for neuroretinal rim area it was 10.8% to 21.0% (planimetry) and 5.2% to 9.6% (HRT). The mean interobserver coefficient of variation for optic disc area was 8.1% (planimetry) and 4.4% (HRT), for neuroretinal rim area it was 16.3% (planimetry) and 8.1% (HRT), and (HRT only) for rim volume was 16.3%, and reference height 9.1%. HRT variability was greater for the software version 1.11 reference plane than for version 1.10. The intraobserver coefficient of variation for optic disc area was 1.5% (planimetry) and 2.4% (HRT), for neuroretinal rim area it was 4.0% (planimetry) and 4.5% (HRT). CONCLUSIONS: Variation between observers is greatly reduced by the HRT when compared with planimetry. However, levels of variation, which may be clinically significant, remain for variables that depend on the subjective drawing of the disc margin.  (+info)

Digital photography of digital imaging and communications in medicine-3 images from computers in the radiologist's office. (6/1386)

To fully take advantage of the widespread use of digital imaging systems and to update and eliminate redundant steps involved in medical radiographic publication, we present our experience of processing Digital Imaging and Communications in Medicine (DICOM)-3 digital images from the point of acquisition to the point of publisher-ready radiographic images without intervening hardcopies.  (+info)

Digital image capture and automated analysis of posterior capsular opacification. (7/1386)

PURPOSE: To develop and validate a digital imaging and analysis technique for assessing the extent of posterior capsular opacification after cataract surgery. METHODS: Retroillumination images of the posterior capsule were obtained by using a digital camera mounted on a slit lamp. The images were analyzed using an available image analysis software program. The image acquisition and analysis techniques were tested for face validity, reproducibility, and the ability to detect progression of capsular opacity over time. RESULTS: Digital retroillumination images were obtained without patient discomfort. Automated analysis of images correlated well with clinical grading both at slit lamp examination and when looking at the images themselves (Spearman's correlation coefficient >0.7). Analysis of images taken at different times showed high reproducibility (intraclass correlation >0.9), and the system was able to identify progression of capsular opacity over a 2-year period with a mean increase of 15.8% in progressors versus an increase of 0.6% in nonprogressors (P < 0.05). CONCLUSIONS: Digital retroillumination images of the posterior capsule can be obtained reliably, and automated analyses correlate well with clinical assessment. The system presented here uses commercially available instruments and software, and it is practical for use in longitudinal studies of posterior capsule opacification. It is reliable, easy to use, and can detect small changes in the percentage area covered by posterior capsule opacification over time.  (+info)

Measuring geographic atrophy in advanced age-related macular degeneration. (8/1386)

PURPOSE: To present a method developed for measuring areas of geographic atrophy (GA) in advanced age-related macular degeneration, METHODS: A microfilm reader projected the 30 degrees fundus photograph of the macula. Retinal landmarks, atrophic areas, and spared areas within the atrophy were traced, without access to drawings of other years. The total atrophic area was calculated, as was the atrophy within a four-disc-area circle entered on the estimated foveal center. The configuration of the atrophy was documented. RESULTS: Avoidable sources of discrepancy included variability in peripapillary atrophy seen on the photograph, and variability seen in the extent of the field. Reproducibility studies found a median absolute difference of 0.19 Macular Photocoagulation Study disc areas (DA) in total atrophy between repeat drawings, with 75% of repeat drawings having a difference of less than 0.33 DA. For central atrophy measures, there was a median difference of 0.08 DA, with 75% of pairs having a difference of less than 0.18 DA. Features making the definition of borders of GA difficult include the presence of drusen and pigmentary alteration, a fundus in which choroidal vessels are easily visible, and variation in the appearance of GA within a single area of atrophy. CONCLUSIONS: This method provides a reliable means of measuring the size of atrophic areas in GA and will be useful for measuring longitudinal change. It may be difficult to determine whether central spared areas are present, and correlation with visual acuity and macular perimetry may be helpful.  (+info)

There are two main types of DR:

1. Non-proliferative diabetic retinopathy (NPDR): This is the early stage of DR, where the blood vessels in the retina become damaged and start to leak fluid or bleed. The symptoms can be mild or severe and may include blurred vision, floaters, and flashes of light.
2. Proliferative diabetic retinopathy (PDR): This is the advanced stage of DR, where new blood vessels start to grow in the retina. These vessels are weak and can cause severe bleeding, leading to vision loss.

DR is a common complication of diabetes, and it is estimated that up to 80% of people with diabetes will develop some form of DR over their lifetime. The risk of developing DR increases with the duration of diabetes and the level of blood sugar control.

Early detection and treatment of DR can help to prevent vision loss, so it is important for people with diabetes to have regular eye exams to monitor their retinal health. Treatment options for DR include laser surgery, injections of anti-vascular endothelial growth factor (VEGF) medications, and vitrectomy, a surgical procedure to remove the vitreous gel and blood from the eye.

Preventing Diabetic Retinopathy

While there is no surefire way to prevent diabetic retinopathy (DR), there are several steps that people with diabetes can take to reduce their risk of developing this complication:

1. Control blood sugar levels: Keeping blood sugar levels within a healthy range can help to slow the progression of DR. This can be achieved through a combination of diet, exercise, and medication.
2. Monitor blood pressure: High blood pressure can damage the blood vessels in the retina, so it is important to monitor and control blood pressure to reduce the risk of DR.
3. Maintain healthy blood lipids: Elevated levels of low-density lipoprotein (LDL) cholesterol and lower levels of high-density lipoprotein (HDL) cholesterol can increase the risk of DR.
4. Quit smoking: Smoking can damage the blood vessels in the retina and increase the risk of DR.
5. Maintain a healthy weight: Obesity is a risk factor for DR, so maintaining a healthy weight can help to reduce the risk of this complication.
6. Get regular eye exams: Regular eye exams can help to detect DR in its early stages, when it is easier to treat and prevent vision loss.

Preventing Diabetic Retinopathy

While there is no cure for diabetic retinopathy (DR), there are several treatment options available to help manage the condition and prevent vision loss. These include:

1. Laser surgery: This is a common treatment for early-stage DR, where a laser is used to shrink abnormal blood vessels in the retina and reduce the risk of further damage.
2. Injection therapy: Medications such as anti-vascular endothelial growth factor (VEGF) injections can be used to shrink abnormal blood vessels and reduce swelling in the retina.
3. Vitrectomy: In severe cases of DR, a vitrectomy may be performed to remove scar tissue and blood from the center of the eye.
4. Blood pressure control: Maintaining healthy blood pressure can help to slow the progression of DR.
5. Blood glucose control: Keeping blood sugar levels under control can also slow the progression of DR.
6. Follow-up care: Regular follow-up appointments with an eye doctor are important to monitor the progress of DR and adjust treatment as needed.

Early detection and treatment of diabetic retinopathy can help to prevent vision loss and improve outcomes for individuals with this complication of diabetes. By managing blood sugar levels, blood pressure, and cholesterol, and by getting regular eye exams, individuals with diabetes can reduce their risk of developing DR and other diabetic complications.

Examples of retinal diseases include:

1. Age-related macular degeneration (AMD): a leading cause of vision loss in people over the age of 50, AMD affects the macula, the part of the retina responsible for central vision.
2. Diabetic retinopathy (DR): a complication of diabetes that damages blood vessels in the retina and can cause blindness.
3. Retinal detachment: a condition where the retina becomes separated from the underlying tissue, causing vision loss.
4. Macular edema: swelling of the macula that can cause vision loss.
5. Retinal vein occlusion (RVO): a blockage of the small veins in the retina that can cause vision loss.
6. Retinitis pigmentosa (RP): a group of inherited disorders that affect the retina and can cause progressive vision loss.
7. Leber congenital amaurosis (LCA): an inherited disorder that causes blindness or severe visual impairment at birth or in early childhood.
8. Stargardt disease: a rare inherited disorder that affects the retina and can cause progressive vision loss, usually starting in childhood.
9. Juvenile macular degeneration: a rare inherited disorder that causes vision loss in young adults.
10. Retinal dystrophy: a group of inherited disorders that affect the retina and can cause progressive vision loss.

Retinal diseases can be diagnosed with a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and imaging tests such as optical coherence tomography (OCT) or fluorescein angiography. Treatment options vary depending on the specific disease and can include medication, laser surgery, or vitrectomy.

It's important to note that many retinal diseases can be inherited, so if you have a family history of eye problems, it's important to discuss your risk factors with your eye doctor. Early detection and treatment can help preserve vision and improve quality of life for those affected by these diseases.

Optic disk drusen (ODD) is a condition that affects the optic nerve and can cause vision loss if left untreated. It is characterized by the accumulation of lipids or other substances on the surface of the optic disk, which is the area where the retinal nerve fibers converge and leave the eye.

The symptoms of ODD can vary in severity and may include:

1. Blurred vision
2. Distorted vision
3. Eye pain or discomfort
4. Sensitivity to light
5. Reduced peripheral vision

If you are experiencing any of these symptoms, it is important to seek medical attention as soon as possible. ODD can be diagnosed through a comprehensive eye exam, which may include imaging tests such as optical coherence tomography (OCT) or visual field testing.

While there is no cure for ODD, there are several treatment options available that can help manage the condition and slow down its progression. These may include:

1. Vitamin supplements: Vitamins A, C, and E, as well as other antioxidants, may help reduce inflammation and slow down the progression of ODD.
2. Anti-inflammatory medications: Corticosteroids or other anti-inflammatory drugs may be prescribed to reduce inflammation and swelling in the eye.
3. Photodynamic therapy: This involves the use of a light-sensitive medication and low-intensity laser therapy to reduce inflammation and slow down the progression of ODD.
4. Laser surgery: In severe cases of ODD, laser surgery may be necessary to remove the accumulated lipids or other substances on the surface of the optic disk.

It is important to note that while these treatments can help manage the condition, they may not completely restore vision that has already been lost. Therefore, early detection and treatment are crucial to preventing or slowing down the progression of ODD.

There are many different types of eye diseases, including:

1. Cataracts: A clouding of the lens in the eye that can cause blurry vision and blindness.
2. Glaucoma: A group of diseases that damage the optic nerve and can lead to vision loss and blindness.
3. Age-related macular degeneration (AMD): A condition that causes vision loss in older adults due to damage to the macula, the part of the retina responsible for central vision.
4. Diabetic retinopathy: A complication of diabetes that can cause damage to the blood vessels in the retina and lead to vision loss.
5. Detached retina: A condition where the retina becomes separated from the underlying tissue, leading to vision loss.
6. Macular hole: A small hole in the macula that can cause vision loss.
7. Amblyopia (lazy eye): A condition where one eye is weaker than the other and has reduced vision.
8. Strabismus (crossed eyes): A condition where the eyes are not aligned properly and point in different directions.
9. Conjunctivitis: An inflammation of the conjunctiva, the thin membrane that covers the white part of the eye and the inside of the eyelids.
10. Dry eye syndrome: A condition where the eyes do not produce enough tears, leading to dryness, itchiness, and irritation.

Eye diseases can be caused by a variety of factors, including genetics, age, environmental factors, and certain medical conditions. Some eye diseases are inherited, while others are acquired through lifestyle choices or medical conditions.

Symptoms of eye diseases can include blurry vision, double vision, eye pain, sensitivity to light, and redness or inflammation in the eye. Treatment options for eye diseases depend on the specific condition and can range from medication, surgery, or lifestyle changes.

Regular eye exams are important for detecting and managing eye diseases, as many conditions can be treated more effectively if caught early. If you experience any symptoms of eye disease or have concerns about your vision, it is important to see an eye doctor as soon as possible.

There are two main types of MD:

1. Dry Macular Degeneration (DMD): This is the most common form of MD, accounting for about 90% of cases. It is caused by the gradual accumulation of waste material in the macula, which can lead to cell death and vision loss over time.
2. Wet Macular Degeneration (WMD): This type of MD is less common but more aggressive, accounting for about 10% of cases. It occurs when new blood vessels grow underneath the retina, leaking fluid and causing damage to the macula. This can lead to rapid vision loss if left untreated.

The symptoms of MD can vary depending on the severity and type of the condition. Common symptoms include:

* Blurred vision
* Distorted vision (e.g., straight lines appearing wavy)
* Difficulty reading or recognizing faces
* Difficulty adjusting to bright light
* Blind spots in central vision

MD can have a significant impact on daily life, making it difficult to perform everyday tasks such as driving, reading, and recognizing faces.

There is currently no cure for MD, but there are several treatment options available to slow down the progression of the disease and manage its symptoms. These include:

* Anti-vascular endothelial growth factor (VEGF) injections: These medications can help prevent the growth of new blood vessels and reduce inflammation in the macula.
* Photodynamic therapy: This involves the use of a light-sensitive drug and low-intensity laser to damage and shrink the abnormal blood vessels in the macula.
* Vitamin supplements: Certain vitamins, such as vitamin C, E, and beta-carotene, have been shown to slow down the progression of MD.
* Laser surgery: This can be used to reduce the number of abnormal blood vessels in the macula and improve vision.

It is important for individuals with MD to receive regular monitoring and treatment from an eye care professional to manage their condition and prevent complications.

Retinal drusen appear as small, flat spots or patches in the retina and are usually yellow or orange in color. They are made up of lipids (fatty substances) and other waste products that have accumulated in the retina over time. The exact cause of retinal drusen is not known, but they are thought to be related to the natural aging process and the decline in the function of the retina over time.

Retinal drusen can be diagnosed with a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and imaging tests such as optical coherence tomography (OCT). There is no treatment for retinal drusen, but they can be monitored with regular eye exams to ensure that they are not progressing or causing any vision problems.

In some cases, retinal drusen may be a sign of a more serious underlying condition such as macular degeneration, which can cause vision loss if left untreated. It is important for individuals over the age of 50 to have regular comprehensive eye exams to detect any changes in the retina and to prevent vision loss.

In summary, retinal drusen are small deposits that accumulate in the retina and are a common age-related change. They do not cause vision problems on their own but can be an early warning sign of more serious eye diseases such as macular degeneration. Regular comprehensive eye exams can detect any changes in the retina and prevent vision loss.

There are different types of cataracts, including:

1. Nuclear cataract: This is the most common type of cataract and affects the center of the lens.
2. Cortical cataract: This type of cataract affects the outer layer of the lens and can cause a "halo" effect around lights.
3. Posterior subcapsular cataract: This type of cataract affects the back of the lens and is more common in younger people and those with diabetes.
4. Congenital cataract: This type of cataract is present at birth and can be caused by genetic factors or other conditions.

Symptoms of cataracts can include:

* Blurred vision
* Double vision
* Sensitivity to light
* Glare
* Difficulty seeing at night
* Fading or yellowing of colors

Cataracts can be diagnosed with a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and imaging tests such as ultrasound or optical coherence tomography (OCT).

Treatment for cataracts typically involves surgery to remove the clouded lens and replace it with an artificial one called an intraocular lens (IOL). The type of IOL used will depend on the patient's age, visual needs, and other factors. In some cases, cataracts may be removed using a laser-assisted procedure.

In addition to surgery, there are also non-surgical treatments for cataracts, such as glasses or contact lenses, which can help improve vision. However, these treatments do not cure the underlying condition and are only temporary solutions.

It's important to note that cataracts are a common age-related condition and can affect anyone over the age of 40. Therefore, it's important to have regular eye exams to monitor for any changes in vision and to detect cataracts early on.

In summary, cataracts are a clouding of the lens in the eye that can cause blurred vision, double vision, sensitivity to light, and other symptoms. Treatment typically involves surgery to remove the clouded lens and replace it with an artificial one, but non-surgical treatments such as glasses or contact lenses may also be used. Regular eye exams are important for detecting cataracts early on and monitoring vision health.

The term "geographic" refers to the characteristic map-like pattern of atrophy that occurs in the retina, with areas of degeneration resembling geographical features such as rivers, lakes, and islands. The progression of GA is typically slower than that of neovascular AMD, but it can still lead to significant vision loss over time.

The exact cause of GA is not fully understood, but it is believed to be related to the aging process and the accumulation of waste material in the retina. Risk factors for developing GA include age, family history, and prior history of AMD. There is currently no cure for GA, but various treatments are being developed to slow its progression and manage symptoms. These may include vitamin supplements, anti-inflammatory medications, and photodynamic therapy. Regular eye exams are important for early detection and monitoring of GA to help preserve vision and quality of life.

There are several types of color vision defects, including:

1. Color blindness: This is a common condition where individuals have difficulty distinguishing between certain colors, such as red and green. It is usually inherited and affects males more frequently than females.
2. Achromatopsia: This is a rare condition where individuals have difficulty seeing any colors and only see shades of gray.
3. Tritanopia: This is a rare condition where individuals have difficulty seeing the color blue and only see yellow and red.
4. Deuteranomaly: This is a common condition where individuals have difficulty seeing red and green colors and see these colors as more yellow or orange.
5. Anomalous trichromacy: This is a rare condition where individuals have an extra type of cone in their retina, which can cause unusual color perception.

Color vision defects can be diagnosed with a series of tests, including the Ishihara test, the Farnsworth-Munsell 100 Hue Test, and the Lantern Test. Treatment options vary depending on the type and severity of the condition, but may include glasses or contact lenses, color filters, or surgery.

In conclusion, color vision defects can significantly impact daily life, making it important to be aware of these conditions and seek medical attention if symptoms persist or worsen over time. With proper diagnosis and treatment, individuals with color vision defects can lead normal and fulfilling lives.

CNV develops when the underlying choroidal layers experience changes that lead to the growth of new blood vessels, which can leak fluid and cause damage to the retina. This can result in vision distortion, loss of central vision, and even blindness if left untreated.

The formation of CNV is a complex process that involves various cellular and molecular mechanisms. It is thought to be triggered by factors such as oxidative stress, inflammation, and the presence of certain growth factors and proteins.

There are several clinical signs and symptoms associated with CNV, including:

1. Distortion of vision, including metamorphopsia (distorted vision of geometric shapes)
2. Blind spots or scotomas
3. Decreased central vision
4. Difficulty reading or performing other daily tasks
5. Reduced color perception
6. Sensitivity to light and glare

The diagnosis of CNV is typically made based on a comprehensive eye exam, including a visual acuity test, dilated eye exam, and imaging tests such as fluorescein angiography or optical coherence tomography (OCT).

There are several treatment options for CNV, including:

1. Anti-vascular endothelial growth factor (VEGF) injections: These medications work by blocking the growth of new blood vessels and can help improve vision and reduce the risk of further damage.
2. Photodynamic therapy: This involves the use of a light-sensitive medication and low-intensity laser therapy to damage and shrink the abnormal blood vessels.
3. Focal photocoagulation: This involves the use of a high-intensity laser to destroy the abnormal blood vessels in the central retina.
4. Vitrectomy: In severe cases, a vitrectomy may be performed to remove the vitreous gel and blood vessels that are causing the CNV.

It is important to note that these treatments do not cure CNV, but they can help improve vision and slow the progression of the disease. Regular follow-up appointments with an eye care professional are necessary to monitor the condition and adjust treatment as needed.

There are several types of ocular albinism, including:

1. Oculocutaneous albinism (OCA) - This is the most common form of ocular albinism and affects both the eyes and skin. It is caused by mutations in the TYR gene, which codes for the enzyme tyrosinase, which is involved in the production of melanin.
2. Hermansky-Pudlak syndrome (HPS) - This is a rare form of ocular albinism that affects both the eyes and platelets. It is caused by mutations in the HPS gene, which codes for the protein hermansky-pudlak syndrome, which is involved in the production of melanin.
3. Juvenile macular degeneration (JMD) - This is a rare form of ocular albinism that affects only the eyes and is caused by mutations in the RPE65 gene, which codes for the protein RPE65, which is involved in the production of melanin.

The symptoms of ocular albinism can vary depending on the type and severity of the condition, but they may include:

* Poor visual acuity (blurred vision)
* Sensitivity to light (photophobia)
* Difficulty seeing colors and fine details
* Eye movements that are slow or uncoordinated
* Increased risk of eye problems such as cataracts, glaucoma, and retinal detachment
* Skin that is pale or freckled

There is no cure for ocular albinism, but treatment options may include glasses or contact lenses to improve vision, medication to reduce the risk of eye problems, and surgery to correct eye alignment or remove cataracts. Early diagnosis and treatment can help manage the symptoms and prevent complications.

Symptoms of macular edema may include blurred vision, distorted vision, blind spots, and sensitivity to light. Diagnosis is typically made through a comprehensive eye exam, including a visual acuity test and imaging tests such as optical coherence tomography (OCT).

Treatment for macular edema depends on the underlying cause of the condition. In some cases, medications such as anti-vascular endothelial growth factor (VEGF) injections or corticosteroids may be prescribed to reduce fluid buildup and swelling in the retina. In more severe cases, surgical intervention may be necessary, such as a vitrectomy to remove the vitreous gel and relieve pressure on the retina.

Prevention of macular edema includes managing underlying conditions such as diabetes and age-related macular degeneration, as well as maintaining regular eye exams to detect and treat any changes in the retina early on. Early detection and treatment can help prevent vision loss from macular edema.

Some common examples of choroid diseases include:

1. Choroidal neovascularization (CNV): This is a condition where new blood vessels grow under the retina, often as a result of age-related macular degeneration (AMD) or other eye conditions. These new vessels can cause vision loss and distortion.
2. Choroidal melanoma: This is a type of cancer that develops in the choroid layer of the eye. It is usually slow-growing, but it can spread to other parts of the body if left untreated.
3. Choroiditis: This is an inflammatory condition that affects the choroid layer of the eye, often as a result of infection or autoimmune disorders. It can cause vision loss and pain in the affected eye.
4. Choroidal rupture: This is a rare condition where the choroid layer of the eye ruptures, leading to bleeding and potentially severe vision loss.
5. Other conditions: There are several other conditions that can affect the choroid layer of the eye, such as choroidal vasculitis, choroidal effusion, and choroidal tumors. These conditions can cause a range of symptoms, including vision loss, pain, and distortion.

Overall, choroid diseases can have a significant impact on vision and eye health, and it is important to seek medical attention if any symptoms persist or worsen over time. Early detection and treatment can help to mitigate the risk of long-term vision loss and other complications.

Retinal hemorrhage can cause vision loss or blindness if not treated promptly. The bleeding can lead to scarring, which can cause permanent damage to the retina and affect vision. In some cases, retinal hemorrhage can be a sign of a more serious underlying condition that requires immediate medical attention.

Retinal hemorrhage is diagnosed through a comprehensive eye exam, which includes a visual acuity test, dilated eye exam, and imaging tests such as fluorescein angiography or optical coherence tomography. Treatment options for retinal hemorrhage depend on the underlying cause and can include laser surgery, medication, or vitrectomy.

In summary, retinal hemorrhage is a serious condition that can cause vision loss or blindness if not treated promptly. It is essential to seek medical attention if symptoms such as blurred vision, flashes of light, or floaters are noticed. Early detection and treatment can help prevent or reduce vision loss in cases of retinal hemorrhage.

There are several different types of glaucoma, including:

* Open-angle glaucoma: This is the most common form of glaucoma, and is caused by slowed drainage of fluid from the eye.
* Closed-angle glaucoma: This type of glaucoma is caused by a blockage in the drainage channels of the eye, leading to a sudden increase in pressure.
* Normal-tension glaucoma: This type of glaucoma is caused by damage to the optic nerve even though the pressure in the eye is within the normal range.
* Congenital glaucoma: This is a rare type of glaucoma that is present at birth, and is caused by a developmental defect in the eye's drainage system.

Symptoms of glaucoma can include:

* Blurred vision
* Loss of peripheral vision
* Eye pain or pressure
* Redness of the eye
* Seeing halos around lights

Glaucoma is typically diagnosed with a combination of visual acuity tests, dilated eye exams, and imaging tests such as ultrasound or MRI. Treatment for glaucoma usually involves medication to reduce pressure in the eye, but may also include surgery to improve drainage or laser therapy to prevent further damage to the optic nerve.

Early detection and treatment of glaucoma is important to prevent vision loss, so it is important to have regular eye exams, especially if you are at risk for the condition. Risk factors for glaucoma include:

* Age (over 60)
* Family history of glaucoma
* Diabetes
* High blood pressure
* African or Hispanic ancestry

Overall, glaucoma is a serious eye condition that can cause vision loss if left untreated. Early detection and treatment are key to preventing vision loss and maintaining good eye health.

The symptoms of RVO can vary depending on the severity of the blockage, but may include:

* Blurred vision
* Double vision
* Flashes of light
* Eye pain
* Reduced peripheral vision

RVO is typically diagnosed through a comprehensive eye exam, which may include imaging tests such as fluorescein angiography or optical coherence tomography (OCT).

Treatment for RVO depends on the severity of the condition and may include:

* Medications to reduce inflammation and improve blood flow
* Injections of medication into the eye
* Laser surgery to clear blockages or reduce inflammation
* Vitrectomy, a surgical procedure to remove the vitreous gel and blood from the eye

Early diagnosis and treatment of RVO can help prevent or reduce vision loss. However, in some cases, permanent vision loss may occur despite treatment.

Preventing RVO is not always possible, but controlling risk factors such as high blood pressure, diabetes, and hypertension can help reduce the likelihood of developing the condition. Maintaining a healthy lifestyle, including regular exercise, a balanced diet, and not smoking, can also help reduce the risk of RVO.

The term "papilledema" comes from the Greek words "papilla," meaning "little nipple," and "dema," meaning "swelling." This refers to the appearance of the optic disc when it is swollen, as it looks like a small, round nipple on the surface of the retina.

Papilledema can be caused by a variety of conditions, including high blood pressure, brain tumors, and aneurysms. It can also be a symptom of other conditions such as meningitis or multiple sclerosis. The diagnosis of papilledema is typically made through a comprehensive eye exam, which includes visual acuity testing, refraction, and retinoscopy. Imaging tests such as MRI or CT scans may also be used to evaluate the cause of the swelling.

Treatment of papilledema depends on the underlying cause of the condition. In cases where high blood pressure is the cause, medication to lower blood pressure may be prescribed. In other cases, surgery or other interventions may be necessary to relieve pressure on the brain and reduce swelling in the optic disc.

It's important for individuals with papilledema to work closely with their healthcare provider to monitor and manage their condition, as untreated papilledema can lead to permanent vision loss.

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Ocular hypertension refers to an increase in the pressure within the eye, which can lead to various eye problems if left untreated. It is a common condition that affects millions of people worldwide. In this article, we will provide a comprehensive overview of ocular hypertension, including its definition, causes, symptoms, diagnosis, and treatment options.

What is Ocular Hypertension?
-------------------------

Ocular hypertension is a condition characterized by an increase in the pressure within the eye, which can cause damage to the eye's delicate structures, such as the retina and optic nerve. The normal pressure range for the eye is between 10-21 mmHg, and anything above this range is considered hypertensive.

Causes of Ocular Hypertension
---------------------------

There are several factors that can contribute to the development of ocular hypertension. These include:

* Genetics: People with a family history of glaucoma are more likely to develop ocular hypertension.
* Age: The risk of developing ocular hypertension increases with age, especially after the age of 40.
* Race: African Americans are at a higher risk of developing ocular hypertension than other races.
* Other health conditions: Certain health conditions, such as diabetes and high blood pressure, can increase the risk of developing ocular hypertension.
* Medications: Long-term use of certain medications, such as steroids, can increase eye pressure.

Symptoms of Ocular Hypertension
---------------------------

Ocular hypertension is often asymptomatic, meaning that there are no noticeable symptoms. However, some people may experience the following symptoms:

* Blurred vision
* Eye pain or discomfort
* Redness of the eye
* Seeing halos around lights
* Nausea and vomiting

Diagnosis of Ocular Hypertension
------------------------------

Ocular hypertension can be diagnosed with a comprehensive eye exam. The exam includes:

* Visual acuity test: This test measures how well you can see at different distances.
* Dilated eye exam: This test allows your doctor to examine the inside of your eyes and check for any signs of ocular hypertension.
* Tonometry: This test measures the pressure inside your eyes.
* Ophthalmoscopy: This test allows your doctor to examine the back of your eyes and look for any signs of ocular hypertension.

Treatment of Ocular Hypertension
-----------------------------

There is no cure for ocular hypertension, but there are several treatments that can help manage the condition and prevent vision loss. These include:

* Eye drops: Medicated eye drops can be used to lower eye pressure.
* Oral medications: Oral medications, such as carbonic anhydrase inhibitors, can be used to lower eye pressure.
* Laser surgery: Laser surgery can be used to increase the drainage of fluid from the eye and lower eye pressure.
* Filtering surgery: Filtering surgery can be used to remove the vitreous gel and reduce eye pressure.

Prevention of Ocular Hypertension
-----------------------------

There is no sure way to prevent ocular hypertension, but there are several steps you can take to lower your risk of developing the condition. These include:

* Getting regular eye exams: Regular eye exams can help detect ocular hypertension early, when it is easier to treat.
* Maintaining a healthy weight: Being overweight or obese can increase your risk of developing ocular hypertension.
* Eating a healthy diet: A diet rich in fruits and vegetables can help keep your eyes healthy.
* Exercising regularly: Regular exercise can help improve blood flow and reduce eye pressure.
* Wearing protective eyewear: Wearing protective eyewear, such as sunglasses, can help protect your eyes from UV radiation and reduce your risk of developing ocular hypertension.

Prognosis of Ocular Hypertension
-----------------------------

The prognosis for ocular hypertension is generally good if the condition is detected and treated early. However, if left untreated, ocular hypertension can lead to vision loss and even blindness. It is important to seek medical attention if you experience any symptoms of ocular hypertension, such as blurred vision, eye pain, or seeing flashes of light.

Treatment for ocular hypertension usually involves medication to lower eye pressure. In some cases, laser surgery may be necessary to improve drainage of fluid from the eye. If left untreated, ocular hypertension can lead to more severe complications, such as glaucoma, which can cause permanent vision loss.

Conclusion
----------

Ocular hypertension is a common condition that can increase your risk of developing glaucoma and other eye problems. While there is no cure for ocular hypertension, early detection and treatment can help prevent complications. By understanding the causes, symptoms, diagnosis, and treatment options for ocular hypertension, you can take steps to protect your vision and maintain good eye health.

FAQs
----

1. Can ocular hypertension be cured?
No, there is no cure for ocular hypertension. However, early detection and treatment can help prevent complications.
2. What are the symptoms of ocular hypertension?
Symptoms of ocular hypertension may include blurred vision, eye pain, seeing flashes of light, and blind spots in your peripheral vision.
3. How is ocular hypertension diagnosed?
Ocular hypertension is typically diagnosed with a comprehensive eye exam, including a visual acuity test, dilated eye exam, and tonometry.
4. Can ocular hypertension lead to other eye problems?
Yes, untreated ocular hypertension can increase your risk of developing glaucoma and other eye problems, such as cataracts and optic nerve damage.
5. What are the treatment options for ocular hypertension?
Treatment for ocular hypertension usually involves medication to lower eye pressure, but in some cases, laser surgery may be necessary.
6. Is ocular hypertension inherited?
Yes, ocular hypertension can be inherited, and certain genetic factors can increase your risk of developing the condition.
7. Can ocular hypertension cause blindness?
Yes, if left untreated, ocular hypertension can lead to blindness due to optic nerve damage or glaucoma.
8. How can I reduce my risk of developing ocular hypertension?
You can reduce your risk of developing ocular hypertension by maintaining a healthy lifestyle, including regular exercise, a balanced diet, and not smoking. It is also important to have regular eye exams, especially if you have a family history of the condition.

Epiretinal Membrane Treatment:

Surgical removal of the membrane is the most common treatment for epiretinal membrane. The procedure, called vitrectomy, involves removing the vitreous gel and the membrane from the eye. Laser photocoagulation can also be used to shrink the membrane and relieve symptoms.

It's important to note that not all epiretinal membranes require treatment. Some people may experience no vision problems and may not need any treatment at all. In other cases, the condition may resolve on its own over time. Your eye doctor will be able to determine the best course of action for your specific case.

Epiretinal Membrane Causes:

The exact cause of epiretinal membranes is not fully understood, but they are thought to arise from scar tissue that forms on the retina in response to injury or inflammation. They can also be associated with other eye conditions such as age-related macular degeneration, diabetic retinopathy, and retinal detachment.

Epiretinal Membrane Symptoms:

Symptoms of epiretinal membrane may include:

* Blurred vision
* Distorted vision (e.g., wavy lines or shapes)
* Difficulty reading or performing other daily tasks
* Metamorphopsia (visual distortion)

Epiretinal Membrane Diagnosis:

Your eye doctor will perform a comprehensive eye exam to diagnose epiretinal membrane. This may include a visual acuity test, dilated eye exam, and imaging tests such as optical coherence tomography (OCT) or ultrasonography.

Epiretinal Membrane Prognosis:

In some cases, epiretinal membranes can resolve on their own over time without treatment. However, if the membrane is causing significant vision loss or distortion, your eye doctor may recommend surgical removal. The prognosis for surgical treatment of epiretinal membrane is generally good, with many patients experiencing improved vision following the procedure.

Epiretinal Membrane Treatment:

Treatment for epiretinal membrane depends on the severity of symptoms and may include:

* Watchful waiting: In some cases, your eye doctor may recommend monitoring the membrane over time to see if it resolves on its own.
* Vitrectomy: This is a surgical procedure in which the vitreous gel is removed from the eye and the epiretinal membrane is removed or peeled off the retina.
* Laser photocoagulation: This is a non-surgical procedure that uses lasers to create small burns around the edges of the membrane, causing it to shrink and pull away from the retina.

Epiretinal Membrane Prevention:

There is no known way to prevent epiretinal membranes from forming, but there are some risk factors that may increase your likelihood of developing one. These include:

* Age: Epiretinal membranes are more common in older adults.
* Family history: If you have a family history of epiretinal membranes, you may be at higher risk.
* Previous eye surgery or trauma: People who have had eye surgery or suffered an eye injury may be at higher risk for developing an epiretinal membrane.

Epiretinal Membrane Prognosis:

The prognosis for epiretinal membranes is generally good, especially if the membrane is removed surgically. In some cases, vision may improve spontaneously over time without treatment. However, if left untreated, an epiretinal membrane can cause permanent vision loss. It is important to follow your eye doctor's recommendations for monitoring and treatment to ensure the best possible outcome.

Epiretinal Membrane Complications:

Complications of epiretinal membranes are rare but can include:

* Retinal detachment: This is a serious complication that occurs when the retina pulls away from the underlying tissue.
* Glaucoma: This is a condition that can cause vision loss and is often associated with increased pressure in the eye.
* Macular hole: This is a small hole in the macula, the part of the retina responsible for central vision.

Epiretinal Membrane Surgery:

If an epiretinal membrane is causing vision problems or is not improving with monitoring alone, surgery may be recommended. The goal of surgery is to remove the membrane and prevent it from recurring. There are several types of surgery that can be used to treat epiretinal membranes, including:

* Scleral buckle surgery: This involves sewing a flexible band around the eye to push the retina back into place.
* Vitrectomy: This is a procedure that removes the vitreous gel and any blood or scar tissue that may be causing problems.
* Photocoagulation: This is a procedure that uses laser light to shrink the membrane and seal off any leaky blood vessels.

It's important to note that not all epiretinal membranes require surgery, and in some cases, monitoring alone may be sufficient. Your eye doctor will be able to recommend the best course of treatment based on your specific condition and symptoms.

Some common types of choroid neoplasms include:

1. Choroidal melanoma: A malignant tumor that arises from the pigment-producing cells of the choroid. It is the most common type of primary intraocular cancer and can spread to other parts of the body if left untreated.
2. Choroidal hemangioma: A benign tumor that arises from the blood vessels of the choroid. It can cause changes in vision and may require treatment to prevent complications.
3. Choroidal naevus: A benign growth that occurs in the choroid and can be inherited. It is usually asymptomatic but can sometimes cause changes in vision.
4. Other rare types of choroid neoplasms include choroidal lymphoma, choroidal osteochondromatosis, and choroidal metastasis (metastasis of cancer from another part of the body to the choroid).

Choroid neoplasms can be diagnosed using a variety of tests, including imaging studies such as ultrasound, CT or MRI scans, and visual field testing. Treatment options vary depending on the type and location of the neoplasm, and may include observation, laser therapy, photodynamic therapy, or surgery.

Overall, choroid neoplasms are complex and varied conditions that require careful evaluation and treatment by an ophthalmologist or other eye care professional to prevent complications and preserve vision.

There are many different types of retinal degeneration, each with its own set of symptoms and causes. Some common forms of retinal degeneration include:

1. Age-related macular degeneration (AMD): This is the most common form of retinal degeneration and affects the macula, the part of the retina responsible for central vision. AMD can cause blind spots or distorted vision.
2. Retinitis pigmentosa (RP): This is a group of inherited conditions that affect the retina and can lead to night blindness, loss of peripheral vision, and eventually complete vision loss.
3. Leber congenital amaurosis (LCA): This is a rare inherited condition that causes severe vision loss or blindness at birth or within the first few years of life.
4. Stargardt disease: This is a rare inherited condition that causes progressive vision loss and can lead to blindness.
5. Retinal detachment: This occurs when the retina becomes separated from the underlying tissue, causing vision loss.
6. Diabetic retinopathy (DR): This is a complication of diabetes that can cause damage to the blood vessels in the retina and lead to vision loss.
7. Retinal vein occlusion (RVO): This occurs when a blockage forms in the small veins that carry blood away from the retina, causing vision loss.

There are several risk factors for retinal degeneration, including:

1. Age: Many forms of retinal degeneration are age-related and become more common as people get older.
2. Family history: Inherited conditions such as RP and LCA can increase the risk of retinal degeneration.
3. Genetics: Some forms of retinal degeneration are caused by genetic mutations.
4. Diabetes: Diabetes is a major risk factor for diabetic retinopathy, which can cause vision loss.
5. Hypertension: High blood pressure can increase the risk of retinal vein occlusion and other forms of retinal degeneration.
6. Smoking: Smoking has been linked to an increased risk of several forms of retinal degeneration.
7. UV exposure: Prolonged exposure to UV radiation from sunlight can increase the risk of retinal degeneration.

There are several treatment options for retinal degeneration, including:

1. Vitamin and mineral supplements: Vitamins A, C, and E, as well as zinc and selenium, have been shown to slow the progression of certain forms of retinal degeneration.
2. Anti-vascular endothelial growth factor (VEGF) injections: These medications can help reduce swelling and slow the progression of diabetic retinopathy and other forms of retinal degeneration.
3. Photodynamic therapy: This involves the use of a light-sensitive medication and low-intensity laser light to damage and shrink abnormal blood vessels in the retina.
4. Retinal implants: These devices can be used to restore some vision in people with advanced forms of retinal degeneration.
5. Stem cell therapy: Research is ongoing into the use of stem cells to repair damaged retinal cells and restore vision.

It's important to note that early detection and treatment of retinal degeneration can help to slow or stop the progression of the disease, preserving vision for as long as possible. Regular eye exams are crucial for detecting retinal degeneration in its early stages, when treatment is most effective.

The symptoms of RP can vary depending on the severity of the condition and the specific genetic mutations causing it. Common symptoms include:

* Night blindness
* Difficulty seeing in low light environments
* Blind spots or missing areas in central vision
* Difficulty reading or recognizing faces
* Sensitivity to light
* Reduced peripheral vision
* Blurred vision

There is currently no cure for RP, and treatment options are limited. However, researchers are actively working to develop new therapies and technologies to slow the progression of the disease and improve the quality of life for individuals with RP. These include:

* Gene therapy: Using viral vectors to deliver healthy copies of the missing gene to the retina in an effort to restore normal vision.

* Stem cell therapy: Transplanting healthy stem cells into the retina to replace damaged or missing cells.

* Pharmacological interventions: Developing drugs that can slow down or reverse the progression of RP by targeting specific molecular pathways.

* Retinal implants: Implanting a retinal implant, such as a retinal prosthetic, to bypass damaged or non-functional photoreceptors and directly stimulate the visual pathway.

It's important to note that these therapies are still in the experimental stage and have not yet been proven effective in humans. Therefore, individuals with RP should consult with their healthcare provider about the best treatment options available.

In summary, Retinitis Pigmentosa is a genetic disorder that causes progressive vision loss, particularly during childhood or adolescence. While there is currently no cure for RP, researchers are actively working to develop new therapies to slow down or restore vision in those affected by the disease. These include gene therapy, stem cell therapy, pharmacological interventions, and retinal implants. It's important to consult with a healthcare provider for the best treatment options available.

FAQs:

1. What is Retinitis Pigmentosa?

Retinitis Pigmentosa (RP) is a genetic disorder that causes progressive vision loss, typically during childhood or adolescence.

2. What are the symptoms of Retinitis Pigmentosa?

Symptoms of RP can vary depending on the specific mutation causing the disease, but common symptoms include difficulty seeing at night, loss of peripheral vision, and difficulty adjusting to bright light.

3. Is there a cure for Retinitis Pigmentosa?

Currently, there is no cure for RP, but researchers are actively working on developing new therapies to slow down or restore vision in those affected by the disease.

4. What are some potential treatments for Retinitis Pigmentosa?

Some potential treatments for RP include gene therapy, stem cell therapy, pharmacological interventions, and retinal implants. It's important to consult with a healthcare provider for the best treatment options available.

5. Can Retinitis Pigmentosa be prevented?

RP is a genetic disorder, so it cannot be prevented in the classical sense. However, researchers are working on developing gene therapies that can prevent or slow down the progression of the disease.

6. How does Retinitis Pigmentosa affect daily life?

Living with RP can significantly impact daily life, especially as vision loss progresses. It's important to adapt and modify daily routines, such as using assistive devices like canes or guide dogs, and seeking support from family and friends.

7. What resources are available for those affected by Retinitis Pigmentosa?

There are a variety of resources available for those affected by RP, including support groups, advocacy organizations, and online communities. These resources can provide valuable information, support, and connections with others who understand the challenges of living with the disease.

Open-angle glaucoma can lead to damage to the optic nerve, which can cause vision loss and even blindness if left untreated. It is important for individuals at risk for open-angle glaucoma to receive regular eye exams to monitor their eye pressure and prevent any potential vision loss.

Risk factors for developing open-angle glaucoma include:

* Increasing age
* Family history of glaucoma
* African or Hispanic ancestry
* Previous eye injuries or surgeries
* Long-term use of corticosteroid medications
* Diabetes or other health conditions that can damage blood vessels.

There are several treatment options available for open-angle glaucoma, including:

* Eye drops to reduce eye pressure
* Oral medications to reduce eye pressure
* Laser surgery to improve drainage of fluid from the eye
* Incisional surgery to improve drainage of fluid from the eye.

It is important for individuals with open-angle glaucoma to work closely with their eye care professional to determine the best course of treatment and monitor their condition regularly.

... documentary photography, social documentary photography, street photography or celebrity photography) by complying with a rigid ... Food photography can be used for editorial, packaging or advertising use. Food photography is similar to still life photography ... Fashion and glamour photography usually incorporates models and is a form of advertising photography. Fashion photography, like ... Outline of photography Science of photography List of photographers List of photography awards Astrophotography Image editing ...
Photographic processing Photography Latent image British Journal of Photography Almanac 1956. The Strand, London: Henry ... Wikimedia Commons has media related to Fogging (photography). (Commons category link from Wikidata, Science of photography). ... Fogging in photography is the deterioration in the quality of the image or the negative caused either by extraneous light, ...
Thus schlieren photography can be used in many engineering problems such as heat transfer, leak detection, study of boundary ... Schlieren photography is a process for photographing fluid flow. Invented by the German physicist August Toepler in 1864 to ... "Schlieren Photography - How Does It Work?". ian.org. 2010-01-22. Retrieved 2020-04-04. "High-speed Ballistics Imaging: A Guest ... In the mid 20th century, R. A. Burton developed an alternative form of schlieren photography, which is now usually called ...
... is photography where each position on an image can record and show a different amount of light, but not ... Black-and-white photography is considered by some to be more subtle and interpretive, and less realistic than color photography ... Black-and-white photography is considered by some to add a more emotional touch to the subject, compared with the original ... Monochrome photography is also useful in areas of high light pollution. Black and white image Digitally toned sepia image ...
A photography or paint triplet is set of three photos or paints usually related to one event or developing a theme or story. ... Multiple images chained together are called photography fold. Images are usually located from left to right with oldest (in ... When four photos or paints are together, it is called photography quadruplet. ...
... in the UK has tight regulations as to where a drone is able to fly. Aerial Photography on Light aircraft ... Elevated photography can also produce bird's-eye images closely resembling aerial photography (despite not actually being ... ISBN 0-7394-3496-9 Media related to Aerial photography at Wikimedia Commons The dictionary definition of aerial photography at ... Aerial photography, Photography by genre, Occupations in aviation, Articles containing video clips). ...
Photography (Hungarian: Fotográfia) is a 1973 Hungarian drama film directed by Pál Zolnay. The film was entered into the 8th ... Margaret Herrick Library, Academy of Motion Picture Arts and Sciences Photography at IMDb v t e (Articles with short ...
This is helpful for some types of photography, such as macro photography. Other head types include the gimbal, fluid, gear, alt ... In photography, a tripod is a portable device used to support, stabilize and elevate a camera, a flash unit, or other ... Use of a tripod may also allow for a more thoughtful approach to photography. For all of these reasons, a tripod of some sort ... This proves useful in wildlife photography as well as in any other case where very long and heavy telephoto lenses are adopted ...
... is also commonly known as high-level photography and mast photography. It requires specialist equipment to ... Mast or pole photography refers to low-level, ground-based elevated or aerial photography, using a telescopic mast or pole, ... the overhead and costs associated with elevated photography should be much lower. Elevated photography has been around for a ... Elevated photography is the process of taking aerial photos using a telescoping pole or mast, or other aerial or elevated ...
Several methods can achieve simplicity in a photograph. The most obvious (and easiest) is to place the subject against a neutral background such as a backdrop or the sky. Backgrounds can be entirely neutral, like a solid backdrop or a cloudless sky; or they can complement the image, like a starfish on the sand. A more technical method of achieving simplicity involves focusing on the subject while ensuring the background is out of focus. Macro settings on digital cameras tend to do this automatically, as they have a narrow depth of field to begin with; the same effect can be achieved with manual adjustment. A photograph showing simplicity should have a clear reason the subject was chosen. The reason for taking the picture should be clearly evident. All unrelated topics should not be present. This relates to shallow depth of field as well, which blurs out the background and focuses on what is the main subject of the photograph. Whether said subject is in the center or otherwise does not matter as ...
"Macro photography: Understanding magnification". Retrieved 20 May 2012. Photography.com. "Macro Photography". Archived from the ... Optical scheme of close-up macro photography Reversed-lens macro photography optical scheme Optical scheme of macro photography ... Digital Photography Review. "Panasonic Leica DG Macro-Elmarit 45 mm F2.8 ASPH OIS Review". dpreview.com. Digital Photography ... Forensic photography Macroscope (Wild-Leica) Micrograph Time-lapse photography Thomas Clark (2011). Digital Macro and Close-Up ...
... is a subcategory of photography focusing upon the technology, interaction and activities of individuals who ... "Social Change Photography", FiftyCrows.org, last accessed May 8, 2008 "Wireless Digital Camera Guide", PhotographyReview.com, ... Some extensions of social photography include geotagging and online mapping, while online social networking destinations like ... Photojournalism Social networking Gallery Project Travel journal Image sharing Photographers and Photography Meetups Writing ...
W. de W. Abney (1893). "On a failure of the law in photography that when the products of the intensity of the light acting and ... In photography, reciprocity refers to the relationship whereby the total light energy - proportional to the total exposure, the ... In photography, reciprocity is the inverse relationship between the intensity and duration of light that determines the ... Walter Clark (2007). Photography by Infrared - Its Principles and Applications. Read Books. p. 62. ISBN 978-1-4067-4486-6. ...
"Chemistry of Photography". Retrieved 2006-11-28. Robert W. Wood (February 1910). "A New Departure in Photography". The Century ... Infrared photography became popular with photography enthusiasts in the 1930s when suitable film was introduced commercially. ... Simple Introduction to Digital Infrared Photography All you ever wanted to know about digital UV and IR photography, but could ... Wavelengths used for photography range from about 700 nm to about 900 nm. Film is usually sensitive to visible light too, so an ...
... a photograph spanning a full circle in side 360-degree video 360-degree interactive photography 360 product photography, the ... rotational photography of a subject Image stitching Photogrammetry This disambiguation page lists articles associated with the ... title 360 photography. If an internal link led you here, you may wish to change the link to point directly to the intended ...
In photography, a bellows is the accordion-like, pleated expandable part of a camera, usually a large or medium format camera, ... View camera Macro photography WeShootYou Homepage v t e (Articles lacking sources from March 2016, All articles lacking sources ... Camera features, All stub articles, Photography stubs). ...
2000 "The Manual of Photography" Focal Press, ISBN 0-240-51574-9, p.230 Ray, S.F. et al. 2000 "The Manual of Photography" Focal ... "Basic Photography - ISO and Film Speed". Retrieved 2 July 2011. Rob Sheppard (2010). Digital Photography: Top 100 Simplified ... see infrared photography and full-spectrum photography). The use of radiometric units is appropriate to characterize such ... In photography, exposure is the amount of light per unit area (the image plane's illuminance times the exposure time) reaching ...
Photographing Fireworks Three Fireworks Photography articles from New York Institute of Photography v t e (Photography by genre ... Fireworks photography is the process of taking photographs of fireworks at night. It is a type of night photography, ... Digital Fireworks Photography "Smithsonian Photographers Shoot Fireworks". Archived from the original on 2007-06-11. Retrieved ...
... took photography itself from a small somewhat elite circle to one that encompassed many people. The camera ... Digital photography has made photography available to a larger group of people. New technology and editing programs available ... As the disappearance of film photography left a missing piece of nostalgia, digital photography created a way to make up for ... "Digital Photography Milestones from Kodak". Women in Photography International. Retrieved 17 September 2007. "Kodak blog: We ...
Iovine, John (June 2000). "Kirlian Photography, Part Deux". Poptronics (16): 20. Iovine, John (May 2000). "Kirlian Photography ... "What is Kirlian Photography? The Science and the Myth Revealed". Light Stalking. Rory Coker. "Kirlian Photography and the "Aura ... John Kirlian Photography - A Hands on Guide , (McGraw-Hill 1993) Wikimedia Commons has media related to Kirlian photography. ... Photography by genre, Photography in the Soviet Union, Pseudoscience, Russian inventions, Soviet inventions). ...
... is a special effect technique in photography where photographers use various types of powdered substances (e ... Powder photography is used for engagement photo shoots, fighters, or dance performers to outline the movements of the specific ... To use powdered substances in photography it is essential to have a structured photo shoot set up. A minimum of two lights are ... The inspiration of powder photography comes from the holi festival of India where one of the traditions during the festival is ...
In photography, a negative is an image, usually on a strip or sheet of transparent plastic film, in which the lightest areas of ... "History of Negative Photography". Aperture:A Kodak Digitizing Blog. Retrieved 13 April 2020. Padova, Ted; Murdock, Kelly L. (11 ... This makes most chemical-based photography a two-step process, which uses negative film and ordinary processing. Special films ... The development of photographic film and monochrome photography developed rapidly in the following decades. A positive image is ...
Photography has been used to capture every kind of moment from its very beginning, but event photography really began when the ... Event photography is the practice of photographing guests and occurrences at any Event or occasion where one may hire a ... Media related to Event photography at Wikimedia Commons (Articles with short description, Short description matches Wikidata, ... Articles lacking sources from December 2016, All articles lacking sources, Commons category link from Wikidata, Photography by ...
Photography Outline of photography The British journal of photography, Volume 150, Issues 7410-7422 by The Liverpool ... Afocal photography, also called afocal imaging or afocal projection is a method of photography where the camera with its lens ... Historically afocal photography with 35 mm SLR or large format film cameras was a very difficult method of photography. With ... Wikimedia Commons has media related to Afocal photography. barrie-tao.com/afocal.html Afocal photography (Articles with short ...
... ,[citation needed] also known as micropayment photography, is a part of the stock photography industry. ... A development that counters these critical opinions is the advance of on-demand photography (or crowd sourced photography, ... What defines a company as a microstock photography company is that they (1) source their images almost exclusively via the ... The pioneer of microstock photography was Bruce Livingstone, who created iStockphoto, originally a free stock photo site that ...
... is a photographic technique that uses Helmholtz reciprocity to capture the light field of all light paths from ... Light-field camera Michael Zhang (2013-08-21). "Dual Photography Lets You Virtually Move a Camera for Impossible Photos". ... http://graphics.stanford.edu/papers/dual_photography/ (Photographic techniques, Imaging). ...
Examples of kinetic photography on Flickr Examples of camera tossing on Flickr Popular Photography Magazine article on camera ... Kinetic photography (kinetic meaning "caused by motion") is an experimental photographic technique in which the photographer ... Perhaps the most risky field of kinetic photography is that of camera tossing, in which the photographer literally throws their ...
... , formerly known as Popular Photography & Imaging, also called Pop Photo, is a monthly American consumer ... "Popular Photography". Popular Photography. Vol. 76, no. 9. September 2012. Durniak, John (December 20, 1992). "From Mind's Eye ... "About Us". Popular Photography. Retrieved June 21, 2022. "Publication information". Popular Photography. Vol. 91, no. 3. March ... The first issue of Popular Photography was published in 1937. It was based in New York City and owned by a number of companies ...
... is the act of taking photographs of firefighting operations. People who practise this form of photography are ... Since fire photography involves being close to dangerous situations, fire photographers must have special skills and knowledge ... They provide a specialized photography service which may involve a fee per photograph. Access to safety perimeters can be an ... A formal fire photographer certification process is being drafted by the International Organization of Fire Photography. The ...
In this context, she discusses in some depth the relationship of photography to politics. On Photography won the National Book ... that photography theorists and critics carry around in their heads." He added that "no other photography book, not even The ... of photography. In a 1998 appraisal of the work, Michael Starenko, wrote in Afterimage that "On Photography has become so ... Many of the reviews from the world of Fine-art photography that followed On Photography at the time of its publication were ...
For over 800 years, lecture halls have a been a mainstay of universities. Although many classrooms still bear strong resemblances to early lecture halls, the manner in which they are used have evolved as faculty have begun employing collaborative techniques and technological tools to serve the diverse populations of higher education today. Despite changes in instructional methods, the ways in which instructors and students are represented photographically have changed little, continuing to showcase the instructor transmitting knowledge to students rather than facilitating active and student-centered pedagogies. We are lacking photographic perspectives that highlight how students are forming inclusive learning communities, which is attained even in classes with hundreds of students and one instructor in a lecture hall. -Viji Sathy ...
Reflection photography is the technique of using reflections on glass, mirror and bodies of water to create artistic, original ... For mirror photography, using a mirror is an obvious choice. The angle you shoot from when taking mirror photography will ... Reflection photography - or mirror photography - uses reflective surfaces that occur in nature or man-made objects to create ... Reflection photography can capture an artistic echo of a scene in a way that makes your work truly stand out. Experiment with ...
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Find Apple accessories to enhance your iPhones photography capabilities and help you get that perfect shot. Buy online and get ...
New Vision Photography Program (NVPP) is an innovative District of Columbia Medicaid Waiver, Prevocational and Supported ... New Vision Photography Program (NVPP) is an innovative District of Columbia Medicaid Waiver, Prevocational and Supported ... New Vision Photography Program (NVPP) is an innovative District of Columbia Medicaid Waiver, Prevocational and Supported ... for adults with intellectual disabilities by introducting them to the creative world of conventional and digital photography. ...
Photography. Photography and Videography Policies, Procedures, and Requests. The University Marcom Group has the following ... Photography Access. You can access images using the UMass stock photography website. You may also fill out our form for ... Marketing and Event Photography. Event photography is also typically beyond the scope of Marcom. If you believe that your event ... Recognizing that resources are limited, the University Marcom Group prioritizes photography that supports one or more of the ...
8 Advanced Street Photography Tips to Level Up Your Shots 14 Cat Photography Tips for Beautiful Photos 15 Summer Landscape ... The first time I ever did some waterfall photography was over a decade ago when I was using a film SLR. I spent a week away by ... More Waterfall Photography Tips. Of course getting the exposure right is just part of the equation when it comes to ... is the editor and founder of Digital Photography School and SnapnDeals. He lives in Melbourne Australia and is also the editor ...
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Clement Merouani is a French Art Director & Photographer living in Paris.
The committee of the iPhone Photography Awards has been putting together the best pictures of some of the worlds best iPhone- ...
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The School of Photography takes a hands-on approach to teaching students the technique, aesthetics and conceptualization skills ... The School of Photography takes a hands-on approach to teaching students the technique, aesthetics and conceptualization skills ... The School of Photography takes a hands-on approach to teaching students the technique, aesthetics and conceptualization skills ... Academy of Art University photography courses are taught by working photographers. This gives students a real world perspective ...
Research, production, exhibition: The ZKM dedicates itself to contemporary developments within art and society in all media formats and systems.
Audubon Photography Awards The 2015 Audubon Photography Awards Winners. See the beautiful photos that took the top prizes last ... On this day I got to Bolivar before sunrise and met a couple of photographers who were there for some low-level photography. We ... Learn more about the birds you love through audio clips, stunning photography, and in-depth text ...
London Food photography is for the novice and professional alike aswell as for those who have not tried food photography but ... Digital PhotographyPortrait PhotographyPhotographyPhotography Classes & WorkshopsStudio PhotographyFood Photography ... London Food photography is for the novice and professional alike aswell as for those who have not tried food photography but ... Taking place over 5 days each month, you will experience food & drinks photography, product photography, videography, fashion ...
A cutting-edge photography software, Luminar boasts many innovative features. With Accent AI 2.0, you can make dozens of ... A cutting-edge photography software, Luminar boasts many innovative features. With Accent AI 2.0, you can make dozens of ...
Photography. PHOT 1050 - Basic Digital Photography 3 credit hours Introduces simple and multiple image photography, principles ... Photography students learn in a building all their own. Photography students at MTSU enjoy their own dedicated space-the ... PHOT 4500 - Special Topics in Photography 1 to 3 credit hours Prerequisite: Admission to candidacy in Photography or permission ... PHOT 4500 - Special Topics in Photography. 1 to 3 credit hours. Prerequisite: Admission to candidacy in Photography or ...
Wedding and Event Photography, Pet Photography services. See their reviews & get quotes today. ... BruceB Photography was an excellent choice for our wedding event. I admit to being a control freak and I typically manage my ... THAT is exactly what BruceB Photography did for us! He moved about the ceremony and reception, almost unnoticed, and as I ... I would definitely recommend BruceB Photography to others, as well as hire him again myself! ...
Photography In 1839 François Arago presented at the academy of sciences in paris the first photograph known as daguerrotipo, ... The timeline of photography is punctuated by milestones for its technical or by their format are constantly being addressed by ... With more than two and a half million pieces the BNE photography is prepared to respond to many questions raised about the ... Over these two hundred years, photography has been transformed from a material object, such as daguerrotipo, an image set on a ...
... has just revised his great article on Digital Photography. His expert advice is that you can ... Derrick Story, author of Digital Photography Pocket Guide, has just revised his great article on Digital Photography. His ...
This website shows a hand made set up for taking highspeed inflight pictures of insects. Included is a pdf of the circuit board layout and a series of improvements and different photos illustrating improvements. The gallery of pictures is truly inspiring. Thanks DeKitchen! Link.
Expert reviews of all the latest cameras, lenses, smartphones and accessories, since 2003.
Tag: infrared photography. See What? 40 Amazing Works of Infrared Photography The world began its love affair with infrared ... photography when the Royal Photographic Society Journal first published these unique types of images in its October 1910 issue ...
A very few days are left for the closing of IIUPE ( International Inter University Photography Exhibition ) 2012 photo ...
Advice on what activities to do to complement you photography holiday from walking to wildlife spotting and much more... ... Photography holiday activities. The type of trip you choose will determine which photography holiday activities youll be ... Photography holiday in the Spanish Pyrenees. Nature photography holiday in the breathtaking Spanish Pyrenees ... Assam and Nagaland photography tour, India. Superb photography in Assam & Tribal villages of Nagaland ...
Magazine Worthy Photography and Timeless Style. Photos of the details, moments, and stories youll want to share forever ... Magazine Worthy Photography and Timeless Style. Photos of the details, moments, and stories youll want to share forever ...
Action from Juneau-Douglas hockeys 4-3 overtime win against Homer at Treadwell Arena on Friday, Jan. 18, 2019. • Contact staff photographer Michael Penn at 523-2262… Continue reading. ...
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