The dioptric adjustment of the EYE (to attain maximal sharpness of retinal imagery for an object of regard) referring to the ability, to the mechanism, or to the process. Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers to ocular adjustments for VISION, OCULAR at various distances. (Cline et al., Dictionary of Visual Science, 4th ed)
The normal decreasing elasticity of the crystalline lens that leads to loss of accommodation.
Refraction of LIGHT effected by the media of the EYE.
The turning inward of the lines of sight toward each other.
The professional practice of primary eye and vision care that includes the measurement of visual refractive power and the correction of visual defects with lenses or glasses.
The aperture in the iris through which light passes.
Deviations from the average or standard indices of refraction of the eye through its dioptric or refractive apparatus.
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.
A refractive error in which rays of light entering the EYE parallel to the optic axis are brought to a focus in front of the RETINA when accommodation (ACCOMMODATION, OCULAR) is relaxed. This results from an overly curved CORNEA or from the eyeball being too long from front to back. It is also called nearsightedness.
A ring of tissue extending from the scleral spur to the ora serrata of the RETINA. It consists of the uveal portion and the epithelial portion. The ciliary muscle is in the uveal portion and the ciliary processes are in the epithelial portion.
The organ of sight constituting a pair of globular organs made up of a three-layered roughly spherical structure specialized for receiving and responding to light.
A condition in which the intraocular pressure is elevated above normal and which may lead to glaucoma.
Images seen by one eye.
Surgical removal of a section of the iris.
The condition of where images are correctly brought to a focus on the retina.
The evacuation of food from the stomach into the duodenum.
An objective determination of the refractive state of the eye (NEARSIGHTEDNESS; FARSIGHTEDNESS; ASTIGMATISM). By using a RETINOSCOPE, the amount of correction and the power of lens needed can be determined.
Agents that dilate the pupil. They may be either sympathomimetics or parasympatholytics.
A refractive error in which rays of light entering the eye parallel to the optic axis are brought to a focus behind the retina, as a result of the eyeball being too short from front to back. It is also called farsightedness because the near point is more distant than it is in emmetropia with an equal amplitude of accommodation. (Dorland, 27th ed)
Infection caused by the protozoan parasite TOXOPLASMA in which there is extensive connective tissue proliferation, the retina surrounding the lesions remains normal, and the ocular media remain clear. Chorioretinitis may be associated with all forms of toxoplasmosis, but is usually a late sequel of congenital toxoplasmosis. The severe ocular lesions in infants may lead to blindness.
The blending of separate images seen by each eye into one composite image.
Disorders that feature impairment of eye movements as a primary manifestation of disease. These conditions may be divided into infranuclear, nuclear, and supranuclear disorders. Diseases of the eye muscles or oculomotor cranial nerves (III, IV, and VI) are considered infranuclear. Nuclear disorders are caused by disease of the oculomotor, trochlear, or abducens nuclei in the BRAIN STEM. Supranuclear disorders are produced by dysfunction of higher order sensory and motor systems that control eye movements, including neural networks in the CEREBRAL CORTEX; BASAL GANGLIA; CEREBELLUM; and BRAIN STEM. Ocular torticollis refers to a head tilt that is caused by an ocular misalignment. Opsoclonus refers to rapid, conjugate oscillations of the eyes in multiple directions, which may occur as a parainfectious or paraneoplastic condition (e.g., OPSOCLONUS-MYOCLONUS SYNDROME). (Adams et al., Principles of Neurology, 6th ed, p240)
A pair of ophthalmic lenses in a frame or mounting which is supported by the nose and ears. The purpose is to aid or improve vision. It does not include goggles or nonprescription sun glasses for which EYE PROTECTIVE DEVICES is available.
The front third of the eyeball that includes the structures between the front surface of the cornea and the front of the VITREOUS BODY.
The most anterior portion of the uveal layer, separating the anterior chamber from the posterior. It consists of two layers - the stroma and the pigmented epithelium. Color of the iris depends on the amount of melanin in the stroma on reflection from the pigmented epithelium.
Processes and properties of the EYE as a whole or of any of its parts.
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.
Methods and procedures for the diagnosis of diseases of the eye or of vision disorders.
An organ of digestion situated in the left upper quadrant of the abdomen between the termination of the ESOPHAGUS and the beginning of the DUODENUM.
Pieces of glass or other transparent materials used for magnification or increased visual acuity.
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.
One of the MUSCARINIC ANTAGONISTS with pharmacologic action similar to ATROPINE and used mainly as an ophthalmic parasympatholytic or mydriatic.
A condition in which the ocular image of an object as seen by one eye differs in size and shape from that seen by the other.
Agents causing contraction of the pupil of the eye. Some sources use the term miotics only for the parasympathomimetics but any drug used to induce miosis is included here.
Sterile solutions that are intended for instillation into the eye. It does not include solutions for cleaning eyeglasses or CONTACT LENS SOLUTIONS.
The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed)
Term generally used to describe complaints related to refractive error, ocular muscle imbalance, including pain or aching around the eyes, burning and itchiness of the eyelids, ocular fatigue, and headaches.
An inflatable device implanted in the stomach as an adjunct to therapy of morbid obesity. Specific types include the silicone Garren-Edwards Gastric Bubble (GEGB), approved by the FDA in 1985, and the Ballobes Balloon.
The use of an aberrometer to measure eye tissue imperfections or abnormalities based on the way light passes through the eye which affects the ability of the eye to focus properly.
A condition of an inequality of refractive power of the two eyes.
The adjustment of the eye to variations in the intensity of light. Light adaptation is the adjustment of the eye when the light threshold is increased; DARK ADAPTATION when the light is greatly reduced. (From Cline et al., Dictionary of Visual Science, 4th ed)
The functional superiority and preferential use of one eye over the other. The term is usually applied to superiority in sighting (VISUAL PERCEPTION) or motor task but not difference in VISUAL ACUITY or dysfunction of one of the eyes. Ocular dominance can be modified by visual input and NEUROTROPHIC FACTORS.
The space in the eye, filled with aqueous humor, bounded anteriorly by the cornea and a small portion of the sclera and posteriorly by a small portion of the ciliary body, the iris, and that part of the crystalline lens which presents through the pupil. (Cline et al., Dictionary of Visual Science, 4th ed, p109)
The positioning and accommodation of eyes that allows the image to be brought into place on the FOVEA CENTRALIS of each eye.
Measurement of ocular tension (INTRAOCULAR PRESSURE) with a tonometer. (Cline, et al., Dictionary of Visual Science, 4th ed)
Tumors or cancer of the EYE.
A series of tests used to assess various functions of the eyes.
Asymmetries in the topography and refractive index of the corneal surface that affect visual acuity.
Misalignment of the visual axes of the eyes. In comitant strabismus the degree of ocular misalignment does not vary with the direction of gaze. In noncomitant strabismus the degree of misalignment varies depending on direction of gaze or which eye is fixating on the target. (Miller, Walsh & Hoyt's Clinical Neuro-Ophthalmology, 4th ed, p641)
Presence of an intraocular lens after cataract extraction.
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.
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.
Abnormal distention of the STOMACH due to accumulation of gastric contents that may reach 10 to 15 liters. Gastric dilatation may be the result of GASTRIC OUTLET OBSTRUCTION; ILEUS; GASTROPARESIS; or denervation.
Voluntary or reflex-controlled movements of the eye.
The clear, watery fluid which fills the anterior and posterior chambers of the eye. It has a refractive index lower than the crystalline lens, which it surrounds, and is involved in the metabolism of the cornea and the crystalline lens. (Cline et al., Dictionary of Visual Science, 4th ed, p319)
The process in which light signals are transformed by the PHOTORECEPTOR CELLS into electrical signals which can then be transmitted to the brain.
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.
The muscles that move the eye. Included in this group are the medial rectus, lateral rectus, superior rectus, inferior rectus, inferior oblique, superior oblique, musculus orbitalis, and levator palpebrae superioris.
Unequal curvature of the refractive surfaces of the eye. Thus a point source of light cannot be brought to a point focus on the retina but is spread over a more or less diffuse area. This results from the radius of curvature in one plane being longer or shorter than the radius at right angles to it. (Dorland, 27th ed)
Damage or trauma inflicted to the eye by external means. The concept includes both surface injuries and intraocular injuries.
The use of statistical and mathematical methods to analyze biological observations and phenomena.
Perception of three-dimensionality.
The pressure of the fluids in the eye.
Tuberculous infection of the eye, primarily the iris, ciliary body, and choroid.
The gradual irreversible changes in structure and function of an organism that occur as a result of the passage of time.
Artificial implanted lenses.
The fluid secreted by the lacrimal glands. This fluid moistens the CONJUNCTIVA and CORNEA.
A parasympatholytic anticholinergic used solely to obtain mydriasis or cycloplegia.
Measurement of the index of refraction (the ratio of the velocity of light or other radiation in the first of two media to its velocity in the second as it passes from one into the other).
The 3d cranial nerve. The oculomotor nerve sends motor fibers to the levator muscles of the eyelid and to the superior rectus, inferior rectus, and inferior oblique muscles of the eye. It also sends parasympathetic efferents (via the ciliary ganglion) to the muscles controlling pupillary constriction and accommodation. The motor fibers originate in the oculomotor nuclei of the midbrain.
Impaired digestion, especially after eating.
Soft, supple contact lenses made of plastic polymers which interact readily with water molecules. Many types are available, including continuous and extended-wear versions, which are gas-permeable and easily sterilized.
The thin noncellular outer covering of the CRYSTALLINE LENS composed mainly of COLLAGEN TYPE IV and GLYCOSAMINOGLYCANS. It is secreted by the embryonic anterior and posterior epithelium. The embryonic posterior epithelium later disappears.
Visual impairments limiting one or more of the basic functions of the eye: visual acuity, dark adaptation, color vision, or peripheral vision. These may result from EYE DISEASES; OPTIC NERVE DISEASES; VISUAL PATHWAY diseases; OCCIPITAL LOBE diseases; OCULAR MOTILITY DISORDERS; and other conditions (From Newell, Ophthalmology: Principles and Concepts, 7th ed, p132).
Health care provided to individuals.
The thin, highly vascular membrane covering most of the posterior of the eye between the RETINA and SCLERA.
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.
Chronic delayed gastric emptying. Gastroparesis may be caused by motor dysfunction or paralysis of STOMACH muscles or may be associated with other systemic diseases such as DIABETES MELLITUS.
Descriptive anatomy based on three-dimensional imaging (IMAGING, THREE-DIMENSIONAL) of the body, organs, and structures using a series of computer multiplane sections, displayed by transverse, coronal, and sagittal analyses. It is essential to accurate interpretation by the radiologist of such techniques as ultrasonic diagnosis, MAGNETIC RESONANCE IMAGING, and computed tomography (TOMOGRAPHY, X-RAY COMPUTED). (From Lane & Sharfaei, Modern Sectional Anatomy, 1992, Preface)
Paid work for mentally or physically disabled persons, taking place in regular or normal work settings. It may be competitive employment (work that pays minimum wage) or employment with subminimal wages in individualized or group placement situations. It is intended for persons with severe disabilities who require a range of support services to maintain employment. Supported employment differs from SHELTERED WORKSHOPS in that work in the latter takes place in a controlled working environment. Federal regulations are authorized and administered by the U.S. Department of Education, Office of Special Education and Rehabilitative Services.
The immune responses of a host to a graft. A specific response is GRAFT REJECTION.
A beta-adrenergic antagonist similar in action to PROPRANOLOL. The levo-isomer is the more active. Timolol has been proposed as an antihypertensive, antiarrhythmic, antiangina, and antiglaucoma agent. It is also used in the treatment of MIGRAINE DISORDERS and tremor.
The application of drug preparations to the surfaces of the body, especially the skin (ADMINISTRATION, CUTANEOUS) or mucous membranes. This method of treatment is used to avoid systemic side effects when high doses are required at a localized area or as an alternative systemic administration route, to avoid hepatic processing for example.
Mild to severe infections of the eye and its adjacent structures (adnexa) by adult or larval protozoan or metazoan parasites.
The teaching or training of those individuals with hearing disability or impairment.
A visual symptom in which a single object is perceived by the visual cortex as two objects rather than one. Disorders associated with this condition include REFRACTIVE ERRORS; STRABISMUS; OCULOMOTOR NERVE DISEASES; TROCHLEAR NERVE DISEASES; ABDUCENS NERVE DISEASES; and diseases of the BRAIN STEM and OCCIPITAL LOBE.
A species of the genus MACACA inhabiting India, China, and other parts of Asia. The species is used extensively in biomedical research and adapts very well to living with humans.
Infection, moderate to severe, caused by bacteria, fungi, or viruses, which occurs either on the external surface of the eye or intraocularly with probable inflammation, visual impairment, or blindness.
Inflammation of part or all of the uvea, the middle (vascular) tunic of the eye, and commonly involving the other tunics (sclera and cornea, and the retina). (Dorland, 27th ed)
The absence or restriction of the usual external sensory stimuli to which the individual responds.
Corneal and conjunctival dryness due to deficient tear production, predominantly in menopausal and post-menopausal women. Filamentary keratitis or erosion of the conjunctival and corneal epithelium may be caused by these disorders. Sensation of the presence of a foreign body in the eye and burning of the eyes may occur.
Abnormally low intraocular pressure often related to chronic inflammation (uveitis).
The measurement of curvature and shape of the anterior surface of the cornea using techniques such as keratometry, keratoscopy, photokeratoscopy, profile photography, computer-assisted image processing and videokeratography. This measurement is often applied in the fitting of contact lenses and in diagnosing corneal diseases or corneal changes including keratoconus, which occur after keratotomy and keratoplasty.
Insertion of an artificial lens to replace the natural CRYSTALLINE LENS after CATARACT EXTRACTION or to supplement the natural lens which is left in place.
Method of making images on a sensitized surface by exposure to light or other radiant energy.
A potent, long-acting cholinesterase inhibitor used as a miotic in the treatment of glaucoma.
Investigative technique commonly used during ELECTROENCEPHALOGRAPHY in which a series of bright light flashes or visual patterns are used to elicit brain activity.
The difference between two images on the retina when looking at a visual stimulus. This occurs since the two retinas do not have the same view of the stimulus because of the location of our eyes. Thus the left eye does not get exactly the same view as the right eye.
Involuntary movements of the eye that are divided into two types, jerk and pendular. Jerk nystagmus has a slow phase in one direction followed by a corrective fast phase in the opposite direction, and is usually caused by central or peripheral vestibular dysfunction. Pendular nystagmus features oscillations that are of equal velocity in both directions and this condition is often associated with visual loss early in life. (Adams et al., Principles of Neurology, 6th ed, p272)
The non-genetic biological changes of an organism in response to challenges in its ENVIRONMENT.
The act of knowing or the recognition of a distance by recollective thought, or by means of a sensory process which is under the influence of set and of prior experience.
Diseases of the cornea.
The time frame after a meal or FOOD INTAKE.
The hospital department responsible for the administration and provision of diagnostic and therapeutic services for the cancer patient.
Professional society representing the field of dentistry.
Congenital absence of or defects in structures of the eye; may also be hereditary.
A series of actions, sometimes symbolic actions which may be associated with a behavior pattern, and are often indispensable to its performance.
Adjustment of the eyes under conditions of low light. The sensitivity of the eye to light is increased during dark adaptation.
The distance between the anterior and posterior poles of the eye, measured either by ULTRASONOGRAPHY or by partial coherence interferometry.
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.
A species of the genus MACACA which typically lives near the coast in tidal creeks and mangrove swamps primarily on the islands of the Malay peninsula.
Anxiety experienced by an individual upon separation from a person or object of particular significance to the individual.
Examination of the interior of the eye with an ophthalmoscope.
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)
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 superior portion of the body of the stomach above the level of the cardiac notch.
A slowly hydrolyzed muscarinic agonist with no nicotinic effects. Pilocarpine is used as a miotic and in the treatment of glaucoma.
A species of baboon in the family CERCOPITHECIDAE, which has a well-studied trilevel social structure consisting of troops, bands, and clans.
Shiny, flexible bands of fibrous tissue connecting together articular extremities of bones. They are pliant, tough, and inextensile.
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).
A system of hand gestures used for communication by the deaf or by people speaking different languages.
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)
The white, opaque, fibrous, outer tunic of the eyeball, covering it entirely excepting the segment covered anteriorly by the cornea. It is essentially avascular but contains apertures for vessels, lymphatics, and nerves. It receives the tendons of insertion of the extraocular muscles and at the corneoscleral junction contains the canal of Schlemm. (From Cline et al., Dictionary of Visual Science, 4th ed)
Elements of limited time intervals, contributing to particular results or situations.
Devices, not affixed to the body, designed to help persons having musculoskeletal or neuromuscular disabilities to perform activities involving movement.
Application of pharmaceutically active agents on the tissues of the EYE.
The ability to detect sharp boundaries (stimuli) and to detect slight changes in luminance at regions without distinct contours. Psychophysical measurements of this visual function are used to evaluate visual acuity and to detect eye disease.
Infections in the inner or external eye caused by microorganisms belonging to several families of bacteria. Some of the more common genera found are Haemophilus, Neisseria, Staphylococcus, Streptococcus, and Chlamydia.
A pupillary abnormality characterized by a poor pupillary light reaction, reduced accommodation, iris sector palsies, an enhanced pupillary response to near effort that results in a prolonged, "tonic" constriction, and slow pupillary redilation. This condition is associated with injury to the postganglionic parasympathetic innervation to the pupil. (From Miller et al., Clinical Neuro-Ophthalmology, 4th ed, pp492-500)
The motor activity of the GASTROINTESTINAL TRACT.
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).
Bilateral dissection of the abdominal branches of the vagus nerve. It is used frequently in the surgical management of duodenal and gastric ulcers, as well as in physiologic studies of gastrointestinal secretion and motility.
A type of stress exerted uniformly in all directions. Its measure is the force exerted per unit area. (McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)
Filarial infection of the eyes transmitted from person to person by bites of Onchocerca volvulus-infected black flies. The microfilariae of Onchocerca are thus deposited beneath the skin. They migrate through various tissues including the eye. Those persons infected have impaired vision and up to 20% are blind. The incidence of eye lesions has been reported to be as high as 30% in Central America and parts of Africa.
A chronic blistering disease with predilection for mucous membranes and less frequently the skin, and with a tendency to scarring. It is sometimes called ocular pemphigoid because of conjunctival mucous membrane involvement.
Devices for examining the interior of the eye, permitting the clear visualization of the structures of the eye at any depth. (UMDNS, 1999)
Unequal pupil size, which may represent a benign physiologic variant or a manifestation of disease. Pathologic anisocoria reflects an abnormality in the musculature of the iris (IRIS DISEASES) or in the parasympathetic or sympathetic pathways that innervate the pupil. Physiologic anisocoria refers to an asymmetry of pupil diameter, usually less than 2mm, that is not associated with disease.
A procedure for removal of the crystalline lens in cataract surgery in which an anterior capsulectomy is performed by means of a needle inserted through a small incision at the temporal limbus, allowing the lens contents to fall through the dilated pupil into the anterior chamber where they are broken up by the use of ultrasound and aspirated out of the eye through the incision. (Cline, et al., Dictionary of Visual Science, 4th ed & In Focus 1993;1(1):1)
An anxiety disorder characterized by recurrent, persistent obsessions or compulsions. Obsessions are the intrusive ideas, thoughts, or images that are experienced as senseless or repugnant. Compulsions are repetitive and seemingly purposeful behavior which the individual generally recognizes as senseless and from which the individual does not derive pleasure although it may provide a release from tension.
The core of the crystalline lens, surrounded by the cortex.
A form of ocular misalignment where the visual axes diverge inappropriately. For example, medial rectus muscle weakness may produce this condition as the affected eye will deviate laterally upon attempted forward gaze. An exotropia occurs due to the relatively unopposed force exerted on the eye by the lateral rectus muscle, which pulls the eye in an outward direction.
Stratified squamous epithelium that covers the outer surface of the CORNEA. It is smooth and contains many free nerve endings.
Each of the upper and lower folds of SKIN which cover the EYE when closed.
Inflammation of the choroid in which the sensory retina becomes edematous and opaque. The inflammatory cells and exudate may burst through the sensory retina to cloud the vitreous body.
The science or philosophy of law. Also, the application of the principles of law and justice to health and medicine.

Latrunculin-A causes mydriasis and cycloplegia in the cynomolgus monkey. (1/610)

PURPOSE: To determine the effect of latrunculin (LAT)-A, which binds to G-actin and disassembles actin filaments, on the pupil, accommodation, and isolated ciliary muscle (CM) contraction in monkeys. METHODS: Pupil diameter (vernier calipers) and refraction (coincidence refractometry) were measured every 15 minutes from 0.75 to 3.5 hours after topical LAT-A 42 microg (approximately 10 microM in the anterior chamber [AC]). Refraction was measured every 5 minutes from 0.5 to 1.5 hours after intracameral injection of 10 microl of 50 microM LAT-A (approximately 5 microM in AC), with intramuscular infusion of 1.5 mg/kg pilocarpine HCl (PILO) during the first 15 minutes of measurements. Pupil diameter was measured at 1 and 2 hours, and refraction was measured every 5 minutes from 1 to 2 hours, after intravitreal injection of 20 microl of 1.25 mM LAT-A (approximately 10 microM in vitreous), with intramuscular infusion of 1.5 mg/kg PILO during the first 15 minutes of measurements (all after topical 2.5% phenylephrine), and contractile response of isolated CM strips, obtained <1 hour postmortem and mounted in a perfusion apparatus, to 10 microM PILO +/- LAT-A was measured at various concentrations. RESULTS: Topical LAT-A of 42 microg dilated the pupil without affecting refraction. Intracameral LAT-A of 5 microM inhibited miotic and accommodative responses to intramuscular PILO. Intravitreal LAT-A of 10 microM had no effect on accommodative or miotic responses to intramuscular PILO. LAT-A dose-dependently relaxed the PILO-contracted CM by up to 50% at 3 microM in both the longitudinal and circular vectors. CONCLUSIONS: In monkeys, LAT-A causes mydriasis and cycloplegia, perhaps related to its known ability to disrupt the actin microfilament network and consequently to affect cell contractility and adhesion. Effects of LAT-A on the iris and CM may have significant physiological and clinical implications.  (+info)

Tonic accommodation, age, and refractive error in children. (2/610)

PURPOSE: An association between tonic accommodation, the resting accommodative position of the eye in the absence of a visually compelling stimulus, and refractive error has been reported in adults and children. In general, myopes have the lowest (or least myopic) levels of tonic accommodation. The purpose in assessing tonic accommodation was to evaluate it as a predictor of onset of myopia. METHODS: Tonic accommodation was measured in children enrolled in the Orinda Longitudinal Study of Myopia using an infrared autorefractor (model R-1; Canon, Lake Success, NY) while children viewed an empty lit field or a dark field with a fixation spot projected in Maxwellian view. Children aged 6 to 15 years were measured from 1991 through 1994 (n = 714, 766, 771, and 790 during the 4 years, successively). Autorefraction provided refractive error and tonic accommodation data, and videophakometry measured crystalline lens curvatures. RESULTS: Comparison of the two methods for measuring tonic accommodation shows a significant effect of age across all years of testing, with the lit empty-field test condition yielding higher levels of tonic accommodation compared with the dark-field test condition in children aged 6 through 11 years. For data collected in 1994, mean (+/-SD) tonic accommodation values for the lit empty-field condition were significantly lower in myopes, intermediate in emmetropes, and highest in hyperopes (1.02 +/- 1.18 D, 1.92 +/- 1.59 D, and 2.25 +/- 1.78 D, respectively; Kruskal-Wallis test, P < 0.001; between-group testing shows each group is different from the other two). Age, refractive error, and Gullstrand lens power were significant terms in a multiple regression model of tonic accommodation (R2 = 0.18 for 1994 data). Lower levels of tonic accommodation for children entering the study in the first or third grades were not associated with an increased risk of the onset of myopia, whether measured in the lit empty-field test condition (relative risk = 0.90; 95% confidence interval = 0.75, 1.08), or the dark-field test condition (relative risk = 0.83; 95% confidence interval = 0.60, 1.14). CONCLUSIONS: This is the first study to document an association between age and tonic accommodation. The known association between tonic accommodation and refractive error was confirmed and it was shown that an ocular component, Gullstrand lens power, also contributed to the tonic accommodation level. There does not seem to be an increased risk of onset of juvenile myopia associated with tonic accommodation.  (+info)

Human dynamic closed-loop accommodation augmented by sympathetic inhibition. (3/610)

PURPOSE: A ciliary alpha-adrenoceptor accommodative effect has been proposed, caused by a small population of alpha1-inhibitory receptors in excised human ciliary muscle. This study was intended to investigate the effect on the closed-loop dynamic accommodative process of modulating alpha1-adrenoceptor activity by topical instillation of the alpha1-adrenergic agonist, phenylephrine hydrochloride. METHODS: A group of 10 visually normal subjects viewed a photopic (30 candela/m2) high-contrast Maltese cross, which was modulated sinusoidally (0.05-0.6Hz) and stepwise over a 2-D range (2-4 D). Monocular temporal accommodation responses were measured using a continuously recording dynamic tracking infrared optometer under two trial conditions: after instillation of saline control solution and 50 minutes subsequent to the instillation of 0.27 microl 0.4% benoxinate hydrochloride and 0.27 microl 2.5% phenylephrine hydrochloride. Pupil size and accommodative amplitude were measured at 90-second intervals for 50 minutes after drug instillation. All accommodative measurements were recorded through a fixed 4-mm pupil. RESULTS: A significant reduction in accommodative amplitude (11%; P < 0.05) was recorded, whereas pupil size showed a significant increase (33%; P < 0.05). No significant change in step-response dynamics was observed. However, phenylephrine hydrochloride caused a significant increase in accommodative gain in the low and midtemporal frequency ranges compared with the effect of a saline control treatment. No significant variation in phase lag was observed. CONCLUSIONS: For the first time in humans, this study shows that augmentation of the alpha1-inhibitory sympathetic contribution results in increased accommodative gain at low and midtemporal frequencies, which is consistent with findings in animal studies.  (+info)

Age-related changes in human ciliary muscle and lens: a magnetic resonance imaging study. (4/610)

PURPOSE: To use high-resolution magnetic resonance (MR) images of the eye to directly measure the relationship between ciliary muscle contraction and lens response with advancing age. METHODS: A General Electric, 1.5-Tesla MR imager and a custom-designed eye imaging coil were used to collect high-resolution MR images from 25 subjects, 22 through 83 years of age. A nonmagnetic binocular stimulus apparatus was used to induce both relaxed accommodation (0.1 diopter [D]) and strong accommodative effort (8.0 D). Measurements of the ciliary muscle ring diameter (based on the inner apex), lens equatorial diameter, and lens thickness were derived from the MR images. RESULTS: Muscle contraction is present in all subjects and reduces only slightly with advancing age. A decrease in the diameter of the unaccommodated ciliary muscle ring was highly correlated with advancing age. Lens equatorial diameter does not correlate with age for either accommodative state. Although unaccommodated lens thickness (i.e., lens minor axis length) increases with age, the thickness of the lens under accommodative effort is only modestly age-dependent. CONCLUSIONS: Ciliary muscle contractile activity remains active in all subjects. A decrease in the unaccommodated ciliary muscle diameter, along with the previously noted increase in lens thickness (the "lens paradox"), demonstrates the greatest correlation with advancing age. These results support the theory that presbyopia is actually the loss in ability to disaccommodate due to increases in lens thickness, the inward movement of the ciliary ring, or both.  (+info)

Characteristics of accommodation toward apparent depth. (5/610)

This paper deals with characteristics of accommodation evoked by perceived depth sensation and the dynamic relationship between accommodation and vergence, applying newly developed optical measurement apparatuses. A total of five subjects looked at three different two-dimensional stimuli and two different three-dimensional stimuli; namely a real image and a stereoscopic image. With regard to the two-dimensional stimuli, a manifest accommodation without any accompanying vergence was found because of an apparent depth sensation even though the target distance was kept constant. With regard to the three-dimensional stimuli, larger accommodation and clear vergence were evoked because of binocular parallax and a stronger depth sensation. As for the stereoscopic image, a manifest overshoot (the accommodation peaked first and receded considerably) was found while the vergence remained constant. On the other hand, the overshoot of accommodation was smaller when subjects were watching the real image. These results reveal that brain depth perception has a higher effect on accommodation than expected. The relationship of accommodation and vergence toward the stereoscopic image suggests a reason why severe visual fatigue is commonly experienced by many viewers using stereoscopic displays. It has also paved the way for the numerical analysis of the oculomotor triad system.  (+info)

Optics of the developing fish eye: comparisons of Matthiessen's ratio and the focal length of the lens in the black bream Acanthopagrus butcheri (Sparidae, Teleostei). (6/610)

Matthiessen's ratio (distance from centre of lens to retina:lens radius) was measured in developing black bream, Acanthopagrus butcheri (Sparidae, Teleostei). The value decreased over the first 10 days post-hatch from 3.6 to 2.3 along the nasal and from four to 2.6 along temporal axis. Coincidentally, there was a decrease in the focal ratio of the lens (focal length:lens radius). Morphologically, the accommodatory retractor lentis muscle appeared to become functional between 10-12 days post-hatch. The results suggest that a higher focal ratio compensates for the relatively high Matthiessen's ratio brought about by constraints of small eye size during early development. Combined with differences in axial length, this provides a means for larval fish to focus images from different distances prior to the ability to accommodate.  (+info)

The growing eye: an autofocus system that works on very poor images. (7/610)

It is unknown which retinal image features are analyzed to control axial eye growth and refractive development. On the other hand, identification of these features is fundamental for the understanding of visually acquired refractive errors. Cyclopleged chicks were individually kept in the center of a drum with only one viewing distance possible. Defocusing spectacle lenses were used to stimulate the retina with defined defocus of similar magnitude but different sign. If spatial frequency content and contrast were the only cues analyzed by the retina, all chicks should have become myopic. However, compensatory eye growth was still always in the right direction. The most likely cues for emmetropization, spatial frequency content and image contrast, do therefore not correlate with the elongation of the eye. Rather, the sign of defocus was extracted even from very poor images.  (+info)

Mechanics of accommodation of the human eye. (8/610)

The classical Helmholtz theory of accommodation has, over the years, not gone unchallenged and most recently has been opposed by Schachar at al. (1993) (Annals of Ophthalmology, 25 (1) 5-9) who suggest that increasing the zonular tension increases rather than decreases the power of the lens. This view is supported by a numerical analysis of the lens based on a linearised form of the governing equations. We propose in this paper an alternative numerical model in which the geometric non-linear behaviour of the lens is explicitly included. Our results differ from those of Schachar et al. (1993) and are consistent with the classical Helmholtz mechanism.  (+info)

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The present invention pertains to accommodating intraocular lens (AIOL) assemblies (31) including a haptics system (32) for self-anchoring implantation in a human eyes annular ciliary sulcus (28) for retaining an AIOL (33) at a desired position along the human eyes visual axis (36), and an accommodation measurement implant (AMI) for determining accommodation and accommodation forces in an experimental set-up including an animals eye.
Purpose.: To test the efficacy of a novel dual treatment for improving accommodative accuracy and dynamics in young persons with myopia. Methods.: Ninety-three young persons with myopia (mean spherical equivalent, −3.0 ± 1.8 D; age 16.8 ± 2.1 years; spherical aberration +0.06 ± 0.04 μm) participated in the study. Custom-designed soft contact lenses were used to alter ocular SA to −0.10 μm to improve accommodative accuracy and reduce any lag of accommodation. A vision training regimen was performed for 18 minutes per day for up to 6 weeks to improve speed of dynamic accommodation. Control groups had contact lenses with no added SA and/or no exercises. To avoid any effects of natural levels of negative aberration on the results of the study, all participants who had negative SA were excluded. Results.: The treatment contact lenses produced a significant reduction in lag of accommodation (P , 0.05) at all proximal viewing distances measured. The vision training measurement and treatment ...
Background: Students accommodation might influence their growth, behaviour and study performance. There is no clarity yet about safety issues, trends in substance abuse and on effect of type of accommodations on students academic performance. Objectives: To compare students perceptions regarding in campus and off campus accommodations with respect to cost, benefit and risks associated with them and also to investigate whether type of accommodation affect medical students academic performance. Materials and Methods: In this cross sectional study, the data was collected using newly designed validated questionnaires from students who had stayed in campus accommodation (n=100) and students who had stayed in off campus accommodation (n=100). Data was analyzed using SPSS version 16. The group wise comparison was made using Mann-Whitney test. A p value of , 0.05 was considered as statistically significant. Results: The difference in the direct cost related to in campus and off campus accommodation ...
Revenue received from the provision of accommodation (excluding revenue received from the provision of meals and other foods and beverages). Since 1 July 2000, takings from accommodation include gross revenue from the provision of accommodation, including GST. In cases where takings from accommodation data cannot be provided inclusive of GST, the amount of GST payable is estimated and the data revised accordingly. Takings from accommodation for each month generally represent the takings received during that month. Where payments are received in advance of, or after the provision of accommodation to guests, the monthly figure for takings from accommodation may not necessarily bear a direct relationship to the number of guests accommodated during the month. Takings from accommodation is sometimes abbreviated as Takings in the text as well as in the table and graph titles in this publication ...
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The mean refractive power of the eye (M) shifted slightly in the myopic direction in downward gaze in the no accommodation condition, consistent with previous findings (Ripple, 1952; Takeda et al., 1992). While the change in mean spherical refractive power was small (about −0.12 D) in magnitude, it was consistent and statistically significant. A study with monkeys observed a downward sag of the crystalline lens during centrally stimulated accommodation, presumably due to the action of gravity (Glasser & Kaufman, 1999). Another recent study reported that anterior chamber depth in human eyes may alter under the influence of gravity due to lens movement (Kasthurirangan, Markwell, Atchison, & Pope, 2011). Therefore, the myopic shift in refractive power in downward gaze that we observed may be the result of a small forward movement of the crystalline lens under the action of gravity. From previously reported modeling, we expect that the crystalline lens would be required to move about 100 μm ...
Academic accommodations are put in place to equalize learning opportunities and access to the academic environment for students with disabilities. The functional limitations resulting from a disability can at times intersect with the academic environment in a way that creates a barrier for students. Advisors work with students to determine what barriers they are experiencing specific to their disability and what accommodations would equalize the learning environment for them. Students with accommodations must meet all the academic requirements and standards of their courses. Accommodations do not guarantee academic achievement and students with accommodations will experience similar challenges and successes as their peers as they go through their programs. Outside of academic accommodations, there are many supports offered to students to support their learning. Any student with a documented disability can register with QSAS. Documentation will be reviewed to ensure it provides details on the ...
The measurement method used to assess the accommodative state of the eye is of greater importance. The push-up test is commonly applied to subjectively measure the accommodative amplitude, but it does not unequivocally determine the accommodative state of the eye. Many factors could influence the results provided by this test, such as pupil size variation, that affects the depth of field of the eye, and ocular aberrations. The use of devices that provide objective measurements of the accommodative state, like the Hartinger Coincidence Refractometer reported in previous studies, allows for explaining the effect of PHCl in the maximum accommodative amplitude of the eye ...
For students looking to study in Sheffield and live in University accommodation for the 2019/20 academic year, applications will open in March 2019. In March admissions will be in contact with you once you had accepted an offer to study at the University of Sheffield, at which time youll be able to apply for accommodation. Please note, you are guaranteed accommodation if you apply before August 31st 2019.. ...
Section 8 - Maintenance and Damage. 8.1 If a residents accommodation or surrounding premises are for any reason either destroyed or damaged so that the accommodation becomes unfit for habitation, subject to section 8.2, the residents right to occupy the accommodation shall thereupon terminate.. 8.2 In the event of section 8.1, MRS will endeavour to relocate the resident to similar MRS accommodation and if no suitable accommodation is available, will terminate the Residency Agreement.. Section 9 - Visitors/guests and Sub-letting. What is the MRS policy in terms of visitors/guests of residents?. 9.1 All MRS accommodation is offered as single occupancy. Residents are permitted visitors and guests - under the expectation that any guests will not negatively impact on the wider residential community. In considering requests for overnight guests (section 9.3), Heads will consider the accommodations style and the potential impact of guests within the community (and smaller residential groupings ...
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Campbell, B., Mete, H.O., Furness, T.A., Weghorst, S. and Zabinzky, Z.B. (forthcoming). Emergency Response Planning and Training through Interactive Simulation and Visualization with Decision Support. Presented at International Conference on Technologies for Homeland Security, May 12-23, 2008, Waltham, MA, USA. [Available online under other terms] Lin, J.J.W., Parker, D.E., Lahav, M. and Furness, T.A. (2005). Unobtrusive vehicle motion prediction cues reduced simulator sickness during passive travel in a driving simulator. Ergonomics, 48(6), 608-624. Duh, B.L., Parker, D.E., Phillips, J.O. and Furness, T.A.III (2004). Conflicting motion cues at the frequency of crossover between the visual and vestibular self-motion systems evoke simulator sickness. Human Factors, 2004(46), 142-153. Schowengerdt, B.T., Seibel, E.J., Silverman, N.L. and Furness, T.A. (2004). Stereoscopic retinal scanning laser display with integrated focus cues for ocular accommodation. Proc. SPIE, 5291, 366-376. [Available ...
TY - CONF. T1 - Computer simulations of the effects of disk tilt and lens tilt on the push-pull tracking error signal in an optical disk drive. AU - Bartlett, Chanda. AU - Kay, David. AU - Mansuripur, M.. PY - 1997/1/1. Y1 - 1997/1/1. N2 - The results of computer simulations pertaining to the offset of the point of peak irradiance from track center and the accompanying change of the tracking error signal (TES) amplitude was reported. In an optical disk drive, both disk tilt and objective lens tilt induce tracking difficulties. The effects of disk tilt on tracking servo are more severe than those of the objective lens tilt because the displacement of the focused spot caused by disk tilt is over twice that caused by lens tilt and because the focused spot is more asymmetric in the presence of disk tilt compared to the case of lens tilt.. AB - The results of computer simulations pertaining to the offset of the point of peak irradiance from track center and the accompanying change of the tracking ...
Purpose: : Many studies have used carbachol iontophoresis (CARB-ionto) or topical pilocarpine eye drops to pharmacologically stimulate accommodation in Rhesus monkeys. These methods hinder ocular measurements at the time of drug application, provide inconsistent results, and have a slow time-course. Here, the utility, safety, time-course, stability and repeatability of intravenous pilocarpine (iv-PILO) and CARB-ionto stimulated accommodation are compared. Methods: : Experiments were performed under anaesthesia on 5 previously iridectomized monkeys aged 10 to 16 years. In 3 monkeys, accommodation was stimulated with CARB-ionto in 5 successive experiments and refraction measured with a Hartinger coincidence refractometer. In separate experiments, accommodation was stimulated using a 5 mg/kg bolus of iv-PILO given over 30 seconds followed by a continuous infusion of 20 mg/kg/hr for 5.5 minutes in 3 successive experiments with the same monkeys as well as in single experiments with 2 additional ...
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Byron bay Luxury accommodation is the best place to stay at Byron bay, this is the place where one can relax and enjoy the most beautiful and luxurious Byron bay beach house. Byron bay luxury accommodation offers luxurious services, best accommodation and yoga with spa. Byron bay luxury accommodation offers comfort, style and best food services at the door step. Byron bay luxury accommodation is the best place to hang out for those who feel tired, unhappy and worn out. Byron bay holiday is the great place to go out and hang out well. It is a luxurious place to go spend time with family and friends. Byron bay luxury accommodation also offers great wedding arrangements, therefore it is great place to enjoy weddings also. Byron bay is specially a young people town. It is worth seeing and has great nightlife activities to offer. One of the best places on earth to catch the waves is Down Under; despite of Great Whites intimidating under the surface yet the water is lovely with such a panoramic view ...
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Generally, an applicant or employee must let the EEOC know that he needs an adjustment or change concerning some aspect of the application process, the job, or a benefit of employment for a reason related to a medical condition.[3] An applicant or employee may request a reasonable accommodation at any time, orally or in writing. An individual should request a reasonable accommodation from the Disability Program Manager (DPM).[4] For applicants, information about contacting the DPM will be in the vacancy announcement and the letter of appointment. (See also Section II.K. on how to contact the DPM.). If an employee makes a reasonable accommodation request to someone other than the DPM, such as her supervisor, office director, district director, or regional attorney, these supervisors/managers should forward the request to the DPM immediately and must do so within 2 business days. The reasonable accommodation process begins as soon as the oral or written request for accommodation is made to any ...
4.00 Wilfrid Laurier University will provide reasonable accommodation to employees to enable to them to perform the essential duties of their position, or an alternate position that may be available that the employee is able and qualified to perform.. Wilfrid Laurier University will support the accommodation of employees and job applicants in a manner which respects dignity, is equitable, individualized and provides for the ability to compete for jobs, perform work and fully participate in employment. To accomplish this goal, the university will work to achieve a workplace free of barriers by providing reasonable accommodations for the needs of those individuals covered by the OHRC, up to the point where it causes undue hardship. Every effort will be made such that the impact of accommodation will not discriminate against another group protected by the Code or any Health and Safety regulations. All reasonable accommodation requests will be taken into consideration.. Where there are alternate ...
Some accommodations are highly focused, addressing very specific needs. Others are very broad, attempting to meet a wide range of needs for as diverse a population as possible.. Some types of accommodation can be classed as appliances. That is, once configured, the user does not interact with the accommodation, they act through it. An example of an accommodation appliance would be setting foreground and background colors to maximize reading for a person with visual limitations. In most cases, the colors are set once, and persist. The user does not use one color set in one application, and another set in another application. Other accommodations are tools. The individual actively uses the accommodation to enable task performance. On-screen keyboards and screen readers are examples of AT tools. The individual interacts with the on-screen keyboard to provide information to a device or application, or issues commands to the screen reader to indicate what text should be read, to spell a word that ...
Inaccurate accommodation in children with Down syndrome (DS) has been reported by our and other groups for some years, but we are still a long way from understanding what causes the deficit. About three quarters of children with DS consistently under-accommodate and, curiously, the deficit persists when hypermetropia is corrected. Bifocals are successful in improving the accommodative response and rendering near work in focus. Recently, we have shown that 40% of children who wear bifocals ultimately learn to use their own accommodation accurately and are able to dispense with the bifocals. This finding suggests that it is not the case that children with DS cant accommodate accurately, but that they dont. The challenge is, therefore, to determine what allows some children to develop accurate accommodation spontaneously, and what feature of bifocals allows others to develop it later. ...
Under certain circumstances, an employer must make reasonable accommodations (relaxing certain requirements of the job) to address an employees disability, and an employee may file a lawsuit if those accommodations are not made; however, this law has several burdensome requirements. For example, the employee must have a condition that qualifies as a disability under the law (often a tricky question), the employer must know about the disability, the employee must ask for specific accommodation he or she wants, the accommodation must be reasonable for that particular employer, the employee must be able to perform each and every essential function of the job if given the accommodation, and the employer must refuse to provide the reasonable accommodation. What qualifies as a reasonable accommodation depends on such factors as the companys size and its financial resources, and the cost and inconvenience of making the accommodation requested. What is reasonable for a huge corporation is often ...
TY - JOUR. T1 - Assessment of gastric accommodation. T2 - Overview and evaluation of current methods. AU - De Schepper, H. U.. AU - Cremonini, F.. AU - Chitkara, D.. AU - Camilleri, M.. PY - 2004/6. Y1 - 2004/6. N2 - Gastric accommodation is considered important in the pathophysiology of several upper gastrointestinal disorders including functional dyspepsia. The gold standard for its measurement is the barostat-balloon study which requires intubation. The aim was explore the reliability and performance characteristics of the techniques proposed for measurement of gastric accommodation. We undertook a literature search using MEDLINE with a broad range of key words. The accommodation reflex and its control are briefly described, based on human data. The performance characteristics of the intragastric barostat, transabdominal ultrasound, magnetic resonance imaging, single photon emission computed tomography, and satiation drinking tests are described. For each technique, we summarize the ...
As OCMS does not have accommodation facilities, we will try our best to help you with finding suitable accommodation. The links below are well known to us and are within walking distance of OCMS. Please contact them first to see if they have anything available and to make your own arrangements first. Failing that, please contact us at [email protected] Since it is always a challenge to find suitable reasonably priced accommodation in Oxford, please start looking early, and if you need our help, please give us plenty of notice. After you have asked us to look for accommodation for you, if in the meantime you have found something, please let us know immediately to avoid double booking by using the above email address.. David Jung, 65A Edgeway Road, Marston, Oxford OX3 ...
Please DO NOT apply for University halls accommodation directly to the Halls Office. Use the Accommodation Application Form only. You will receive notification that we have received your application and room allocation and contracts for your room in the month before your arrival.. If we dont receive your accommodation request form by the deadline we will assume that you dont wish to take up the offer of a room in University Halls.. Contract: University halls accommodation is allocated for a set period of time, you will be asked to accept the room by signing the Universitys Residence agreement (contract) whereby you will agree to pay for your room for the whole period stated on your residence agreement. Please note the end date of your contract may extend beyond the end of the semester.. Arriving early or later. Please inform the Study Abroad or International Exchange Office if you plan to arrive earlier or later than the expected arrival date [email protected] or ...
You will need to apply for accommodation and indicate that you require specific accommodation. Although you do not have to do so, it will help us to help you if you mention your specific requirements in your application. Even though you may have told others in the University, we would strongly advise that you make us fully aware of your requirements for accommodation separately so that we can support you during your stay.. You will also need to complete Wellbeing Services prospective student questionnaire to provide details of your requirements. Please review the Typical adjustments information above to consider what type of request you may wish to make.. You will need to submit supporting evidence before your application can be processed for the specific accommodation you have requested or room adaptions i.e. a fridge in your room.. Our AccessAbility/Wellbeing Services Team will then liaise with you about your specific requirements.. We encourage you to submit the Wellbeing Services ...
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Accommodation reflexes are the reflex action of the eye to focus on distant objects and near objects. This movement consists of coordinated pupil size, lens shape, and vergence changes. This movement depends on the cranial nerve II, the cranial nerve III, and the superior center. The cranial nerve is a member of the afferent reflex. The superior center is interneuron. The shape changes of the lens will be controlled by the ciliary muscles that are inside your eyes. Changes in contraction of the ciliary muscles will cause the image to be distant or close to focus on the retina. This change can change the focus distance in your eyes. The movement will be controlled by the parasympathetic nervous system.. This involves three responses consisting of convergence, lens accommodation, and pupil accommodation. Light from near and far objects will be brought to the focus of the retina. Near objects will look great in the field of vision so the eyes will get light from a wide angle. The eye will meet as ...
PROGRAMME WORKSHOP PROGRAMME REGISTRATION VISA​ & TRAVE​L ACCOMMODATION , ENTERTAINME​NT , TRANSPORT ​ TO DO IN CAPE TOWN MAPS​ ​​​1. Accommodation You are advised to book your accommodation well in advance to avoid any inconvenience.. You may refer to the DiGS19 ACCOMMODATION list, compiled by the organisers, for accommodation options that are within walking distance from the conference venue at STIAS. No reservations have been made at any of these establishments; if you would like to opt for one of these accommodation options, then you are asked to make direct contact with the hotel, guest house, B&B, etc. to arrange your accommodation.. Please email Marie for any accommodation related enquiries.. DiGS19 ACCOMMODATION ...
Registered students who receive extensions on assignments (if feasible) as an accommodation are still required to reach out to SDS prior to the deadline or reach out to their faculty, if they prefer doing so, in order to determine if an extension on an assignment is feasible and will not fundamentally alter course requirements. As accommodations are not retroactive, extensions on assignments do not cover past assignments.. The ability to record lectures remains an accommodation our approved students can utilize, as long as they have signed our ability to record lectures agreement. Students who receive CART (Communication Access Real-time Translation) due to being deaf or hard of hearing will continue to receive this accommodation through remote captioning instead of on-site captioning. We have reached out to the professors of these students to ensure that the remote captioners will be virtually present during lectures.. Please note that we will continue to offer check-in appointments and intake ...
Some of you may remember that I was weirdly excited about the yurt, which Susan told me was where the interns live. As it turns out, my excitement was a bit premature. Brian and Autumn, the other two interns who arrived last week, are living in the yurt. I was a little disappointed to start, but now that Ive settled into the platform tent next door, Im completely over my sadness ...
The school/testing facility also has responsibility to accommodate. There should be a documented disability form on file at your childs school. The College Board (SAT, PSAT/NMSQT, and AP Exams) requests the documented disability and a brief description of the impact of stress on blood glucose level fluctuations, plus the treatment regimen. Your school also needs to have requested accommodations for testing on file. Some common accommodations are: allowing all diabetes supplies (meter, lancet, strips, water, food to treat lows) to be easily accessible to the student during the exam, and/or stopping the clock to treat any highs or lows. Keep in mind that school accommodations do not automatically qualify for College Board testing accommodations, although most do.. The ACT has its own policies regarding accommodations. A student with diabetes may choose to use National Standard Time with Accommodations, meaning they make take the exam at a regularly scheduled testing center with set time limits ...
Clark College will provide accommodations to otherwise qualified individuals with disabilities, who without these accommodations would not be provided equal access, unless an accommodation would alter the fundamental requirements of the course or program. Accommodations are based on the current impact of the functional limitation(s) of the disability. In order to fully evaluate requests for accommodations, Clark College generally requires documentation of the disability. This consists of an evaluation by an appropriate professional and describes the current impact of the disability as it relates to the accommodation request. The cost and responsibility for providing documentation shall be borne by the student. Note: There are cases when Disability Support Services (DSS) staff can exercise professional judgment, in lieu of documentation. Documentation received is kept in the Disability Support Services Office. Information will only be released to Clark College personnel on an educational need to ...
Testing Accommodations for College Board Tests (AP, SAT, PSAT): In order to receive accommodations on these tests, a Student Eligibility Form must be submitted. The form must be completed by parents and school officials and then mailed to the College Board at least seven weeks in advance of the student taking the first test. The criteria established by the College Board for granting testing accommodations varies significantly from the school system. Having an IEP or a 504 plan does not guarantee that the College Board will provide accommodations. Currently, the College Board requires up-to-date (meaning within the last three years) neuro-psychological testing that documents the specific need for each requested accommodation. Please contact the Academic Support Center (301-803-7140) or the Counseling Office (301-803-7121) in order to obtain the forms and to ask questions about this process ...
Accommodative response was measured by having subjects switch the right lens to a spherical lens in the appropriate power. This was done for all subjects regardless of which lens they were randomized to, to maintain masking. Subjects wore an infrared filter over the right eye for occlusion and to ensure that they were fixating with the left eye (which was still wearing the lens they were randomized to). This filter allowed for measurements to be taken with the WAM-5500 open field autorefractor in front of the right eye. This method assumes a symmetrical accommodative response between eyes. Since accommodative response was measured monocularly, this eliminated any convergent accommodation, but this was consistent between lenses and test distances. Five measurements were taken at each test distance (distance, 40cm and 25cm). The 5 readings obtained were used to calculate mean spherical equivalent value at each test distance and compared to expected accommodative value to determine lag ...
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The Building of Hope, the Leukaemia Foundations $9.1 million Victorian Patient Accommodation Centre is nearing completion and the Victorian Government has helped fast-track the project with a generous and substantial financial contribution of $500,000 towards the new accommodation facility.. General Manager, Stephanie Hechenberger was thrilled with the result and is looking forward to welcoming families to a world class accommodation facility. This important project will mean leukaemia patients and people with other from regional Victoria coming to Melbourne for treatment can have peace of mind not having to worry about where to stay, or whether their family can come with them, said Minister for Health, Jill Hennessey. Being able to stay across the road from the new Victorian Comprehensive Cancer Centre will mean regional people will have access to our best and brightest minds and cutting-edge cancer treatment. The facility will also provide families with onsite support services through our ...
Each academic department will provide the academic accommodations needed by the student. These academic accommodations may include but are not limited to extended time for tests, note takers, use of a tape recorder in class, reading exam questions to a student, a scribe to record a students answers to test questions, and the use of a computer for an essay exam. Other Campus departments will be responsible for making accommodations as necessary.. ...
ACCOMMODATION. Accommodation at Aro Hā has been designed to celebrate the fundamental acts of sleeping and bathing in Zen inspired luxury. There are 8 accommodation units each with a unique aspect.. Rooms are well appointed and have a sustainable, ecologically friendly story. Furnished in a refined, uncluttered manner. Recycled timbers, woven natural dyed blankets, organic cotton linen, New Zealand wool floor rugs and natural latex mattresses. There are desks for journaling and spaces for reading. Rooms are well lit and all have views.. Bathrooms are well appointed, designed to be shared and feature separate shower/bath/toilet spaces. Bathrobes and oversized towels are in all bathrooms as are organic body & shower products.. In the foyer of the Eco Suites & Monastic Singles there is space to sit, change shoes, and share herbal teas.. There is a laundry service and also a separate drying room for hiking boots & jackets.. Aro Hā, by design, encourages shared space. Experience tells us that ...
We want your time with us to be as enjoyable and pleasant as possible and at Gavar State University we want you to feel right at home as it wont be just a place for you to study but a home away from your own home.. The University offers its campus accommodation - a dormitory provided with learning facilities and amenities. Your safety and comfort are our priority, and the university-managed area operates 24-hour security, 24-hour emergency maintenance, and cleaning of communal areas. The internet is available through the whole area for 24 hours. To get more information about Gavar State University accommodation and to book a room, please, contact us before your arrival:. E-mail: [email protected] Gavar State University staff responsible for University international relations is on hand to give you advice, help you with your accommodation issues and support you throughout your time at University, making sure you are happy and settled in your new home.. Welcome to Gavar State University!. ...
Some individuals may not be able to perform aspects of their job remotely; consequently, an adjusted or modified schedule or leave as an accommodation may be the focus of the interactive process. JAN offers information on leave as an accommodation that an employer may want to review. For many occupations, some work can be performed away from the worksite including receiving and responding to emails, writing and editing documents, or developing presentations. With appropriate IT applications and cloud computing, working remotely has become much more feasible. This option will, of course, depend on the nature of the job and the information that the individual may need to access. The types of accommodations available will vary greatly. Generally, an employer would want to consider how much time away from the workplace is needed; whether a schedule can be modified to allow the employee to make up time (i.e., adjusting arrival/departure times); whether work can be performed remotely; and any barriers ...
Warrnambool Hotels and Accommodation booking service providing comprehensive Warrnambool Accommodation information and online bookings facilities for Hotels in Warrnambool.
New students and continuing students requesting special housing considerations for the first time must complete and submit the Accommodation Request Form and documentation of disability to AES. Continuing students with housing accommodations, who wish to have the same accommodations for the following year, should notify AES by February 1 ...
What are reasonable accommodations? What accommodations do people with diabetes need? Find information about your right to workplace accommodations here.
One of the most important protections available to individuals with disabilities under Title I of the ADA is the right to receive reasonable accommodations. But what exactly is a reasonable accommodation, when does it have to be provided, and how does a person go about requesting it? These questions and more will be discussed during this free webinar, along with examples of specific accommodations that may be helpful for employees with epilepsy. Whether you are currently employed or searching for a job, this is information you should know ...
What are reasonable accommodations? What accommodations do people with diabetes need? Find information about your right to workplace accommodations here.
Tipperary House Dublin provides bed and breakfast, budget accommodation, affordable budget accommodation, continental breakfast. Also available cheap hotel room in Dublin.
Crane, H.D.; Cornsweet, T.N. (1970). "Ocular focus stimulator". Journal of the Optical Society of America. 60 (4): 577. doi: ... Cornsweet, T.N.; Crane, H.D. (1973). "Training the visual accommodation system". Vision Research. 13 (3): 713-715. doi:10.1016/ ...
925-939...................................Refraction and errors of refraction and accommodation 939.2-981 ... Ocular therapeutics 110-320...................................Otology. Diseases of the ear 341-437 ...
Disorders of ocular muscles, binocular movement, accommodation and refraction. Hidden categories: *All articles with dead ...
Disorders of ocular muscles, binocular movement, accommodation and refraction. Hidden categories: *Articles needing additional ... Cycloplegia is paralysis of the ciliary muscle of the eye, resulting in a loss of accommodation.[1] Because of the paralysis of ...
Disorders of ocular muscles, binocular movement, accommodation and refraction. Hidden categories: *Articles needing additional ...
"Spectral bandwidth and ocular accommodation". Journal of the Optical Society of America A. 12 (3): 450-5. Bibcode:1995JOSAA..12 ... Thibos, L. N.; Bradley, A; Still, D. L.; Zhang, X; Howarth, P. A. (1990). "Theory and measurement of ocular chromatic ... Kruger, P. B.; Mathews, S; Aggarwala, K. R.; Sanchez, N (1993). "Chromatic aberration and ocular focus: Fincham revisited". ...
... refraction Accommodative system Amplitude of accommodation Negative relative accommodation Positive relative accommodation ... Ocular motility should always be tested, especially when patients complain of double vision or physicians suspect neurologic ... Close inspection of the anterior eye structures and ocular adnexa are often done with a slit lamp which is a table mounted ... If there is a small, irregular pupil that constricts poorly to light, but normally to accommodation, this is an Argyll ...
He is probably best known for his theory regarding the mechanism of accommodation, of which he disagreed with the accommodation ... He conducted research of entoptic phenomenon, Purkinje images, the etiology of myopia, and Listing's law of ocular movement. He ... Accommodation, Paris 1909 Octave Doin, ("Hermann von Helmholtz and the Theory of Accommodation") which was critical to ... Furthermore, he stated that during accommodation, while the central part of the anterior surface of the lens is bulged, the ...
However, where the degree of error is small enough to allow the child to generate clear vision by over-accommodation, but large ... These problems may directly affect the extra-ocular muscles themselves, and may also result from conditions affecting the nerve ... The over-convergence associated with the extra accommodation required to overcome a hyperopic refractive error can precipitate ... However, others will eventually require extra-ocular muscle surgery to resolve their problems. Congenital esotropia, or ...
... reflex Pupillary light reflex Vestibulo-ocular reflex Corneal reflex Oculocardiac reflex Ciliospinal reflex Accommodation ...
There have been reports of disturbances in ocular accommodation occurring after the concomitant use of the related drug ...
When the details of the examination and history indicate a familial history of similar ocular or systemic disease, whether or ... Often treatment is relegated to lifestyle alterations and accommodations and supportive measures.[citation needed] Those ... diseases understood as congenital in origin could either be specific to the ocular organ system (LHON, DOA) or syndromic (MELAS ...
doi:10.1016/j.ajo.2007.09.012 Campos, E.C., & von Noorden, G.K. (2006). Binocular vision and ocular motility (6th ed.) (p.177) ... it is easy to ensure they are maintaining their accommodation. 2. The examiner then holds the prism bar over the patients ... The prism cover test (PCT), is an objective measurement and the gold standard in measuring strabismus, i.e. ocular misalignment ... Ansons, A. M., & Davis, H. (2014). Diagnosis and Management of Ocular Motility Disorders (4th ed.). pp. 97. London: Blackwell. ...
... through eye strain or fatigue of ocular systems. It is common in young adults who have active accommodation, and classically ... Organic causes may include systemic or ocular medications, brain stem injury, or active ocular inflammation such as uveitis. ... "Acute Adult Onset Comitant Esotropia Associated with Accommodative Spasm". Chan R, Trobe J (2002). "Spasm of accommodation ... "Comparative analysis of the efficacy of some methods of conservative treatment of accommodation spasms and myopia in children ...
Book on eye diseases, therapeutics and ocular surgery. Ein neues Ophthalmotrop, 1857 - A new ophthalmotrope. Das Stereoscop : ... Pagel: Biographical Dictionary excellent doctors of the nineteenth century (biography) [1] On the anomalies of accommodation ...
Further, the ocular lens yellows with age, providing added protection. However, the lens also becomes more rigid with age, ... losing most of its accommodation - the ability to change shape to focus from far to near - a detriment due probably to protein ... Ocular albinism affects not only eye pigmentation but visual acuity, as well. People with albinism typically test poorly, ... A decreased molecular weight or a decrease in the degree of polymerization of ocular melanin has been proposed to turn the ...
Ocular muscles and their disorders. Pioneering the work in their study and treatment. He discovered "Landolt's bodies" between ... OCLC 29693375 The refraction and accommodation of the eye and their anomalies, Edinburgh, Pentland, 1886. OCLC 3057956 Ed. 2.: ... OCLC 83292691 Defective ocular movements and their diagnosis, London, Frowde, 1913. OCLC 14798829 and Marc Landolt Le ... OCLC 12013230 Refraction and accommodation of the eye and their anomalies, Edinburgh, Young J. Pentland, 1886. OCLC 11626601 ...
... accommodation imbalances, (positive relative accommodation and negative relative accommodation). They work closely with ... French ophthalmologist Louis Emile Javal, began using ocular exercises to treat strabismus (squint) and described the practice ... Primary activities Ocular motility diagnosis & co-management Vision screening. In the UK all school vision screening programmes ...
It has less commonly been associated with spasm of accommodation on attempted upward gaze, pseudoabducens palsy (also known as ... see-saw nystagmus and associated ocular motility deficits including skew deviation, oculomotor nerve palsy, trochlear nerve ...
... accommodation, ocular MeSH G11.697.716.154 - adaptation, ocular MeSH G11.697.716.154.371 - dark adaptation MeSH G11.697.716.182 ... ocular MeSH G11.697.677.330 - evoked potentials, visual MeSH G11.697.677.340 - eye color MeSH G11.697.677.360 - figural ... ocular MeSH G11.697.677.911 - vision MeSH G11.697.677.911.500 - phosphenes MeSH G11.697.677.911.700 - vision, binocular MeSH ... vestibulo-ocular MeSH G11.561.730.869 - startle reaction MeSH G11.561.796.255 - gravity perception MeSH G11.561.796.263 - ...
... and ocular function and accommodation (eye). The first version of the LEA test was developed in 1976 by Finnish pediatric ...
... juvenile and presenile cataract 366.1 Senile cataract 366.2 Traumatic cataract 366.3 Cataract secondary to ocular disorders ... with other disorders 366.5 After-cataract 366.8 Other cataract 366.9 Unspecified 367 Disorders of refraction and accommodation ... and with systemic syndromes 365.5 Glaucoma associated with disorders of the lens 365.6 Glaucoma associated with other ocular ... 367.1 Myopia 367.2 Astigmatism 367.3 Anisometropia and aniseikonia 367.4 Presbyopia 367.5 Disorders of accommodation 367.8 ...
Accommodation and Convergence of the Eyes (1882) Tests and Studies of the Ocular Muscles (1898) Golden Rules of Refraction ( ...
Accommodation is the process by which the vertebrate eye adjusts focus on an object as it moves closer or further away. Whereas ... The human vestibulo-ocular reflex is a reflex eye movement that stabilises images on the retina during head movement by ... Accommodation refers to the process through which the vertebrate eye adjusts its focus on any particular object as it moves ... On the other hand, fish usually achieve accommodation by moving the lens closer to or further from the retina. There is a need ...
... given that ocular optics are not achromatic and red objects require more accommodation to be focused on the retina. This notion ... This induced ocular disparity makes blue rays appear to come from a more distant source than red rays. Chromostereopsis may ... Modern accounts of chromatic aberrations divide ocular chromatic aberrations into two main categories; longitudinal chromatic ... blue rays are refracted more than red rays by the ocular media, their foci not only lie at different levels (chromatic ...
ISBN 978-81-312-1132-8. Accommodation at Georgia State University Ocular+Accommodation at the US National Library of Medicine ... Three regions make up the accommodation neural circuit, the afferent limb, the efferent limb and the ocular motor neurons that ... The accommodation reflex (or accommodation-convergence reflex) is a reflex action of the eye, in response to focusing on a near ... During the accommodation reflex, the pupil constricts to increase the depth of focus of the eye by blocking the light scattered ...
ISBN 978-0-7506-7524-6. oph/723 at eMedicine-"Presbyopia: Cause and Treatment" Ocular+Accommodation at the US National Library ... Excessive accommodation and spasm of accommodation are types of increased accommodation. Presbyopia, physiological ... It can be broadly classified into two, decreased accommodation and increased accommodation. Decreased accommodation may occur ... Accommodation usually acts like a reflex, including part of the accommodation-vergence reflex, but it can also be consciously ...
... (7 March 1863 in Mainz - 28 June 1923 in Possenhofen) was a German ophthalmologist known for his work in ocular ... Die Refraktion und Akkommodation des menschlichen Auges und ihre Anomalien, 1902 - Refraction and accommodation of the human ... He made significant contributions in his studies of refraction and accommodation of the eye. He also conducted research on ...
... from PRESERVATIVES FROM THE EYE DROPS AND THE OCULAR SURFACE In fact, none of the cycloplegic drops used to treat Spasm of ... A spasm of accommodation (also known as a ciliary spasm, an accommodation, or accommodative spasm) is a condition in which the ... attenuates eye fatigue by improving visual accommodation" For routine cases of spasm of accommodation, the American Optometric ... Normal Amplitude of accommodation and Near point of convergence Reduced Negative relative accommodation Difficulty clearing ...
2009). "Lens". Ocular pathology. Sassani, Joseph W. (6th ed.). Edinburgh: Mosby/Elsevier. ISBN 978-0-323-04232-1. OCLC ... The process of changing lens power to see near clearly is known as accommodation. Early embryologic development of lens capsule ... Snell, Richard S. (2012). "Development of the Eye and the Ocular Appendages". Clinical anatomy of the eye. Lemp, Michael A. ( ...
List of systemic diseases with ocular manifestations. References[edit]. *^ a b c Matejcek, A; Goldman, RD (November 2013). " ...
Ocular ischemic syndrome / Central retinal vein occlusion. *Central retinal artery occlusion. *Retinopathy *diabetic ...
Ocular hypertension. References[edit]. *^ Cassin, B. and Solomon, S. Dictionary of Eye Terminology. Gainesville, Florida: Triad ... "A lymphatic defect causes ocular hypertension and glaucoma in mice". The Journal of Clinical Investigation. 124: 4320-24. doi ...
Patient remains asymptomatic until epithelial erosions precipitate acute episodes of ocular hyperemia, pain, and photophobia. ...
Ocular ischemic syndrome / Central retinal vein occlusion. *Central retinal artery occlusion. *Branch retinal artery occlusion ...
Hodge C, Lawless M (July 2008). "Ocular emergencies". Aust Fam Physician. 37 (7): 506-9. PMID 18592066.. ... Jimmy D. Bartlett; Siret D. Jaanus (2008). Clinical Ocular Pharmacology. Elsevier Health Sciences. pp. 454-. ISBN 978-0-7506- ... they are rarely done because of the cost and the general dearth of laboratory staff experienced in handling ocular specimens. ... "The ocular application of povidone-iodine". Community Eye Health / International Centre for Eye Health. 16 (46): 30-1. PMC ...
These 'tun' consisted of a series of buildings designed to provide short-term accommodation for the king and his household. It ... Ocular Agency in early Anglo-Saxon cremation burials." Encountering images: materialities, perceptions, relations. Stockholm ...
Accommodation reflex. pons/medulla: Jaw jerk reflex. *Corneal reflex. *Caloric reflex test/Vestibulo-ocular reflex/ ...
"Treatment of Leber Congenital Amaurosis Due to RPE65Mutations by Ocular Subretinal Injection of Adeno-Associated Virus Gene ...
During the accommodation phase, mental schemas self-modify by incorporating dream themes. During the emotional selection phase ... The processes involved included EEG monitoring, ocular signaling, incorporation of reality in the form of red light stimuli and ... dreams test prior schema accommodations. Those that appear adaptive are retained, while those that appear maladaptive are ...
Ocular ischemic syndrome / Central retinal vein occlusion. *Central retinal artery occlusion. *Branch retinal artery occlusion ...
Ocular ischemic syndrome / Central retinal vein occlusion. *Central retinal artery occlusion. *Branch retinal artery occlusion ...
Ocular ischemic syndrome / Central retinal vein occlusion. *Central retinal artery occlusion. *Branch retinal artery occlusion ...
... especially when used to treat ocular tumors. ... Accommodation. Paralytic strabismus. *Ophthalmoparesis. * ...
Ocular immune system. *Optical coherence tomography. *Eye care professional. *Eye disease. *Refractive error ...
It is used topically in the form of eye drops to manage ocular hypertension (high pressure in the eye) and open-angle glaucoma. ... Like other beta blockers, and unlike the anti-glaucoma medication pilocarpine, levobunolol has no effect on accommodation and ... "Comparison of the effects of topical levobunolol and timolol solution on the human ocular surface". Cornea. 22 (8): 709-15. doi ...
Accommodation tends to decrease with age.). *Cataracts-Cloudiness over the eye's lens, causing poor night-time vision, halos ... Blurred vision is an ocular symptom. The small print in an ingredients list is clear to healthy young eyes ...
Eye care/screening for children within primary health care is important as catching ocular disease issues can lead to better ...
Accommodation reflex. pons/medulla: Jaw jerk reflex. *Corneal reflex. *Caloric reflex test/Vestibulo-ocular reflex/ ...
Lucas, Robert J.; Douglas, Ronald H.; Foster, Russell G. (2001). "Characterization of an ocular photopigment capable of driving ...
... previous ocular penetrating trauma or surgery, and other concomitant ocular disease similar to VKH disease.[2][6][11] ... glaucoma and ocular hypertension.[2][3][5][6] Full-blown recurrences are, however, rare after the acute stage is over.[8] ... ocular complications may require an subtenon[6] or intravitreous injection of corticosteroids[4][6] or bevacizumab.[9] In ... Ocular MRI may be helpful[6] and auditory symptoms should undergo audiologic testing.[6] Histopathology findings from eye and ...
Ocular immune system. *Optical coherence tomography. *Eye care professional. *Eye disease. *Refractive error ...
"Parasympathetic Ocular Control - Functional Subdivisions and Circuitry of the Avian Nucleus of Edinger-Westphal."Science Direct ... Anterior, posterior and medial pretectal nuclei inhibit pain (indirectly), aid in REM, and aid the accommodation reflex, ... nerve impulses in the ocular system of the central nervous system. In the presence of light, the retinal molecule changes ... Nuclei of the optic tract are involved in smooth pursuit eye movement and the accommodation reflex, as well as REM. ...
Ocular immune system. *Optical coherence tomography. *Eye care professional. *Eye disease. *Refractive error ...
Ocular immune system. *Optical coherence tomography. *Eye care professional. *Eye disease. *Refractive error ...
Fraunfelder, Frederick T.; Fraunfelder, Frederick W.; Chambers, Wiley A. (2014). Drug-Induced Ocular Side Effects: Clinical ... Ocular Toxicology E-Book. Elsevier Health Sciences. p. 79. ISBN 978-0-323-31985-0. .. ...
List of systemic diseases with ocular manifestations. References[edit]. *^ Ketring, Kerry I. (2006). "Emergency Treatment for ... This type causes fewer problems than anterior lens luxation, although glaucoma or ocular inflammation may occur. Surgery is ... leading to an obstruction of outflow of aqueous humour and subsequent increase in ocular pressure (glaucoma).[1] Better ...
Berson, E. L.; Rosner, B; Sandberg, M. A.; Weigel-Difranco, C; Dryja, T. P. (1991). "Ocular findings in patients with autosomal ... Berson, Eliot L.; Rosner, B; Sandberg, M. A.; Dryja, T. P. (1991). "Ocular Findings in Patients with Autosomal Dominant ...
The initial stimulus for accommodation is a blurred visual image that first reaches the visual cortex. Through a series of ... In human eye: Accommodation. The image of an object brought close to the eye would be formed behind the retina if there were no ... Second, the focus (accommodation) of the eyes must be adjusted for near vision. The link between convergence of the eyes and ... The initial stimulus for accommodation is a blurred visual image that first reaches the visual cortex. Through a series of ...
Ocular Accommodation, Convergence, and Fixation Disparity A Manual of Clinical Analysis. Ocular Accommodation, Convergence, and ... Goss, David A. is the author of Ocular Accommodation, Convergence, and Fixation Disparity A Manual of Clinical Analysis with ...
Ocular" by people in this website by year, and whether "Accommodation, Ocular" was a major or minor topic of these publications ... Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers ... "Accommodation, Ocular" is a descriptor in the National Library of Medicines controlled vocabulary thesaurus, MeSH (Medical ... Below are the most recent publications written about "Accommodation, Ocular" by people in Profiles. ...
Potential Signal to Accommodation From the Stiles-Crawford Effect and Ocular Monochromatic Aberrations Available in the Shape ... Potential Signal to Accommodation From the Stiles-Crawford Effect and Ocular Monochromatic Aberrations Available in the Shape ... Potential Signal to Accommodation From the Stiles-Crawford Effect and Ocular Monochromatic Aberrations Available in the Shape ... Results:: Accommodation did not differ significantly from that in the control condition for the SC condition (F = 0.32, p = .59 ...
1986). Ocular accommodation in chickens: Corneal vs lenticular accommodation and effect of age: Vision Research Vol 26(11) 1986 ... Spasm of accommodation. References[edit , edit source]. *↑ Schachar RA. The mechanism of accommodation and presbyopia. ... Gawron, V. J., Paap, K. R., & Malmstrom, F. V. (1985). The effects of task performance on ocular accommodation and perceived ... Simmers, A. J., Gray, L. S., & Wilkins, A. J. (2001). The influence of tinted lenses upon ocular accommodation: Vision Research ...
... no accommodation (0.2 D) in primary gaze, (ii) no accommodation (0.2 D) in downward gaze, (iii) 2.5-D accommodation in primary ... we aimed to investigate changes in ocular aberrations associated with accommodation in downward gaze. We measured ocular ... 2002). Changes of ocular aberration with accommodation. American Journal of Ophthalmology, 134, 924-926. [CrossRef] [PubMed] ... Accommodation is known to cause substantial changes in some aspects of ocular aberrations. These changes typically include a ...
What is ill-sustained accommodation? Meaning of ill-sustained accommodation medical term. What does ill-sustained accommodation ... Looking for online definition of ill-sustained accommodation in the Medical Dictionary? ill-sustained accommodation explanation ... spectacle accommodation The amplitude of accommodation referred to the spectacle plane. Symbol: As. See ocular accommodation.. ... tonic accommodation See resting state of accommodation.. vergence accommodation See convergence accommodation.. Fig. A4 A ...
... succinct and well-written textbook to objectively cover the subject of ocular and visual physiology. Ocular and visual ... Ocular and Visual Physiology. Book Subtitle. Clinical Application. Authors. * Simon E. Skalicky ... Ocular and visual physiology is a core knowledge component for these disciplines, and yet is often difficult to understand. ... Ocular and Visual Physiology - Clinical Application is essential reading for any one hoping to have a clear understanding of ...
Accommodation (ocular) The image of an object brought close to the eye would be formed behind the retina if there were no ...
SUGGESTED ACCOMMODATION. Hilton Garden Inn - Dallas Market Center. 2325 North Stemmons Freeway. Dallas, TX 75207. Directions ... Vision, Ocular-Motor and Movement Strategies for Integrated Learning in Pediatrics. June Smith. ... Assess and interpret how vision and ocular-motor dysfunction can impact learning and describe at least three strategies to ... Movement-based therapeutic strategies and ocular-motor assessment will be incorporated through case study review for effective ...
Accommodation, Accommodative insufficiency, Binocular vision, Convergence, Convergence insufficiency, Fatigue, Myasthenia ... Accommodative and Vergence Findings in Ocular Myasthenia: PDF Only. Cooper Jeffrey MS OD; Pollak, Gayle J. OD; Ciuffreda, ... Accommodative and Vergence Findings in Ocular Myasthenia: A Case Analysis Journal of Neuro-Ophthalmology20(1):5-11, March 2000 ... Validity of Forced Eyelid Closure Test: A Novel Clinical Screening Test for Ocular Myasthenia Gravis ...
Ocular and visual physiology is a core knowledge component for these disciplines, and yet is often difficult to understand. ... Ocular and Visual Physiology - Clinical Application is essential reading for any one hoping to have a clear understanding of ... Anterior and Posterior Eye Ocular Movements Visual Electrophysiology Visual Pathway Visual Perception ... succinct and well-written textbook to objectively cover the subject of ocular and visual physiology. ...
Ocular. Common (1% to 10%): Blurred vision Postmarketing reports: Abnormal accommodation, ptosis[Ref] ...
Ocular Accommodation. Convergence, Excess. Interventions Device: Test Daily Disposable Soft Contact Lenses. Device: Control ... Lag of Accommodation while wearing ... Lag of Accommodation while wearing ... Arm/Group Description: Lag of Accommodation while ... Since accommodative response was measured monocularly, this eliminated any convergent accommodation, but this was consistent ... The clinical aspects of accommodation and convergence. Am J Optom 1944; 21:301-13. ...
Influence of Age on Ocular Wavefront Aberration Changes With Accommodation Yoshihiko Iida, MD; Misae Ito, CO; Kimiya Shimizu, ... Association Between Ocular Dominance and Refraction Ilker Eser, MD; Frank Schwendeman, OD; Daniel S Durrie, MD; Jason E Stahl, ...
disorders of sclera, low vision, eye edema and swelling, eye hemorrhage, eye itching, eye pain, external ocular muscle ... Frequency not reported: Accommodation disorders, blindness, conjunctivitis, diplopia. ...
Refraction, Ocular: see Eye -- Accommodation and refraction. *Refraction of the eye: see Eye -- Accommodation and refraction ...
The changes in the anterior ocular parameters during 4-D accommodation were similar to those for the 2-D accommodation. Z04 ... The changes in the anterior ocular parameters during 4-D accommodation were similar to those for the 2-D accommodation. Z04 ... The changes in the anterior ocular parameters during 4-D accommodation were similar to those for the 2-D accommodation. Z04 ... The changes in the anterior ocular parameters during 4-D accommodation were similar to those for the 2-D accommodation. Z04 ...
Accommodation, Ocular* * Adult * Asthenopia / physiopathology* * Asthenopia / psychology * Convergence, Ocular* * Depth ... Under the low-conflict conditions accommodation was stable, but convergence-driven accommodation was dominant when the target ... It is proposed that defocus-driven accommodation becomes weak when the target comprises low spatial frequency components. Large ... Under the high-conflict conditions the role of convergence-driven accommodation increased systematically with the degree of ...
Accommodation, Ocular * Achievement* * Child * Color Perception * Convergence, Ocular * Eye Movements * Female * Humans ...
... findings of ocular surface squamous neoplasia (OSSN) during treatment with topical interferon alfa-2b (IFN alfa-2... ... Accommodation, Ocular. The dioptric adjustment of the EYE (to attain maximal sharpness of retinal imagery for an object of ... Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. Loosely, it refers ... Ocular surface squamous neoplasia (OSSN) is the most common non-pigmented malignancy of the ocular surface and is represented ...
A model to illustrate ocular accomodation. Turtox News 28(8):146- 148. ...
Disorders of ocular muscles, binocular movement, accommodation and refraction. Hidden categories: *All articles with dead ...
Disorders of ocular muscles, binocular movement, accommodation and refraction. Hidden categories: *Articles needing additional ... Cycloplegia is paralysis of the ciliary muscle of the eye, resulting in a loss of accommodation.[1] Because of the paralysis of ...
Ocular muscle proprioception. Eye movement Eyelid elevation Contraction of iris Accommodation of lens. ... Ocular muscle proprioception. Eye movement. VII. Facial. Pons. Taste (anterior two-thirds of tongue). Muscle movement of face, ... Ocular muscle proprioception. Eye movement. V. Trigeminal. Midbrain and pons. Touch, pain, and temperature sensation from face ...
Ocular. Amlodipine:. Uncommon (0.1% to 1%): Abnormal vision, conjunctivitis, diplopia, eye pain. Rare (less than 0.1%): ... Xerophthalmia, abnormal visual accommodation. Hydrochlorothiazide:. Frequency not reported: Transient blurred vision, ...
... the University of Plymouth to undertake a postgraduate research position studying for a PhD entitled; Ocular Accommodation in ... Accommodation and presbyopia *Clinical uses of the Accommodative Facility Test. *Ageing of the crystalline lens and ciliary ... Application advice Exchange opportunities Country guides Advice for international students Accommodation Business. Professional ... Courses Undergraduate Postgraduate Postgraduate research Professional development Student life Accommodation Visit virtual open ...
Ocular Anterior Segment Biometry and High-Order Wavefront Aberrations During Accommodation PDF ... Synchronized Real Time Imaging of Ocular Anterior Segment Biometry and Ciliary Muscle during Accommodation ... Relationships between the Aberrations and the Morphology of Ocular Anterior Segment during Accommodation ... TAGS: visual accommodation, biometry, lens, crystalline, lens (device), eye, ciliary muscle, capillary malformation Invest. ...
Ocular Alignment Test​. Eye Health Assesment​. ​ Vision Assessment. Depth Perception Test. Accommodation Test​. Management & ... Cirrus HD Ocular Coherence Tomography (OCT). The OCT is an advanced retinal imaging system that is capable of producing 3 ... Lenstar Ocular Biometry The Lenstar is useful in monitoring the progression of myopia as it provides precise, consistent​ and ... NP Optometry Centre is equipped with the Lenstar Ocular Biometer that can accurately measure the length of your childs eye. ...
Ocular motor abnormalities, especially strabismus, are a common finding in A-T. Poor accommodation and abnormal eye movements ... Ocular manifestations of ataxia-telangiectasia.. Farr AK1, Shalev B, Crawford TO, Lederman HM, Winkelstein JA, Repka MX. ... To report the manifestations of ataxia-telangiectasia (A-T) on the ocular sensory and motor systems. ... Accommodation was deficient in the 54 patients in whom it was measured. No posterior segment vascular anomalies were detected. ...
  • The ciliary effect is called accommodation (focusing the lens for near or far vision), and the rectus effect is called convergence (moving the entire eyeball). (britannica.com)
  • Goss, David A. is the author of 'Ocular Accommodation, Convergence, and Fixation Disparity A Manual of Clinical Analysis' with ISBN 9780409903065 and ISBN 040990306X. (valorebooks.com)
  • The hypothesis was examined by measuring accommodation and convergence continuously with a Shin-Nippon SRW5000 infrared autorefractor and a limbus tracking device. (nih.gov)
  • Subjects viewed a high contrast Maltese Cross target at three levels of Gaussian filter target blur under conditions of relatively low- and high-conflict between accommodation and convergence stimuli, the latter inducing the sensation of stereopsis. (nih.gov)
  • Under the low-conflict conditions accommodation was stable, but convergence-driven accommodation was dominant when the target was extremely blurred. (nih.gov)
  • Under the high-conflict conditions the role of convergence-driven accommodation increased systematically with the degree of target blur. (nih.gov)
  • The accommodation reflex (or accommodation-convergence reflex) is a reflex action of the eye, in response to focusing on a near object, then looking at a distant object (and vice versa), comprising coordinated changes in vergence, lens shape (accommodation) and pupil size. (wikipedia.org)
  • It must be distinguished from other forms of esotropia, usually by a trial of eyeglasses or occasionally by trying cholinesterase-inhibiting eye drops, which facilitate accommodation and thus lessen convergence. (healio.com)
  • In esotropia with a high AC /A ratio, there is an inappropriate amount of convergence for each unit of accommodation, causing the eyes to turn inward at near focus. (healio.com)
  • Vergence accommodation refers to that accommodation driven by the neurological crosslink from fusional (i.e., disparity) vergence to accommodation per the convergence accommodation-to-convergence ratio. (thefreelibrary.com)
  • Additionally, the patient manifested a markedly reduced accommodative convergence-to-accommodation (AC/A) ratio (1.33:1) that returned to normal (3:1) without treatment 18 months after the injury [17]. (thefreelibrary.com)
  • Prefrontal cortex activity evoked by convergence load under conflicting stimulus-to-accommodation and stimulus-to-vergence eye-movements measured by NIRS : Prefrontal cortex oxygenation and visual fatigue. (hig.se)
  • Research has clearly shown that there are many applications involving these aberrations with diagnosis, treatment, and management of disorders, such as myopia, corneal disorders, presbyopia, cataract, and intraocular lens application and the dynamic changes in refractive state and retinal image quality produced by tear film thinning and accommodation. (lww.com)
  • The primary aim of this thesis was to investigate the in vivo ocular morphological and contractile changes occurring within the accommodative apparatus prior to the onset of presbyopia, with particular reference to ciliary muscle changes with age and the origin of a myopic shift in refraction during incipient presbyopia. (bl.uk)
  • Cross-sectional ocular biometric data were collected to quantify accommodative axial length changes from early adulthood to advanced presbyopia (n=72). (bl.uk)
  • Accommodative axial length elongation significantly attenuated during presbyopia, which was consistent with a significant increase in ocular rigidity during presbyopia. (bl.uk)
  • The studies presented in this thesis support the Helmholtz theory of accommodation and despite the reduction in centripetal ciliary muscle contractile response with age, primarily implicate lenticular changes in the development of presbyopia. (bl.uk)
  • Ocular motor abnormalities, especially strabismus, are a common finding in A-T. Poor accommodation and abnormal eye movements may lead to reading difficulty reported by patients with A-T. (nih.gov)
  • Any disruptive factor that prevents the eyes from seeing equally, fusing their images, or working together (coordination), whether it be an imbalance of refractive errors between the eyes (anisometropia), a lens opacity obstructing normal vision (cataract), or an ocular misalignment (strabismus), can potentially cause loss of vision (amblyopia). (healio.com)
  • Refractive error and ocular dimensions were measured at the start of treatment and every week thereafter. (arvojournals.org)
  • Comparison of ocular component growth curves among refractive error groups in children. (osu.edu)
  • First, complete ocular examination, including determination of refractive error and examination for the presence or absence of disease, could not be performed reliably on a large number of patients in the short time period between admission to the hospital facility and surgery. (asahq.org)
  • The purpose of this study was to determine if characteristic patterns in the intensity distribution of the defocused retinal image due to the Stiles-Crawford (SC) effect and the eye's monochromatic aberrations can provide a signal to accommodation in these conditions. (arvojournals.org)
  • Ocular monochromatic aberrations through the fifth Zernike order were measured with a COAS aberrometer for a 2 D accommodative demand. (arvojournals.org)
  • For a 3-mm pupil, characteristic patterns in the intensity distribution of the defocused point spread function due to the SC effect or monochromatic aberrations do not provide an 'achromatic cue' to accommodation. (arvojournals.org)
  • A Shack-Hartmann wavefront sensor was modified to allow measurement of ocular aberrations in downward gaze with binocular fixation. (arvojournals.org)
  • Immediately after beginning and then again 5 and 10 min after the commencement of each trial, ocular aberrations were measured. (arvojournals.org)
  • To observe the recovery in ocular aberrations following each test condition, subjects again viewed a distance target in primary gaze and aberration measurements were taken at 0, 5, and 10 min. (arvojournals.org)
  • The changes in ocular aberrations that occurred in downward gaze recovered almost immediately after shifting gaze from downward back to primary gaze. (arvojournals.org)
  • These findings show that ocular aberrations change from primary to downward gaze, particularly during accommodation. (arvojournals.org)
  • Accommodation is known to cause substantial changes in some aspects of ocular aberrations. (arvojournals.org)
  • A customized system was built to simultaneously capture images of ocular wavefront aberrations and anterior ocular biometry. (elsevier.com)
  • While the tension on equatorial zonules is increased during accommodation, the anterior and posterior zonules are simultaneously relaxing. (wikia.org)
  • The anterior ocular biometry changed during 2-D accommodation, in which central lens thickness, ciliary muscle thicknesses at 1 mm posterior to the scleral spur (CMT1), and the maximum value of ciliary muscle thickness increased significantly, whereas anterior chamber depth, CMT3, radius of anterior lens surface curvature (RAL), and radius of posterior lens surface curvature (RPL) decreased significantly. (elsevier.com)
  • Additionally, longitudinal measurement of ocular biometry revealed a significant increase in crystalline lens thickness and a corresponding decrease in anterior chamber depth after 2.5 years (n=51). (bl.uk)
  • The change in ocular biometry per dioptre of accommodation exerted remained invariant after 2.5 years. (bl.uk)
  • Donders FC (1864) On the anomalies of accommodation and refraction of the eye with a preliminary essay on physiological dioptrics. (springer.com)
  • The literature on intra-ocular pressure dynamics is reviewed, including tonometer design and calibration, the influence of corneal-scleral mechanics, and scleral rigidity factors. (omicsonline.org)
  • It is important to determine the intra-ocular pressure, the fluid pressure inside the eye, in order to evaluate for patients at risk from glaucoma, because of potential damage to the optic nerve [ 1 , 2 ]. (omicsonline.org)
  • 11 - 13 ] discussed ROP (often associated with rapid juvenile myopia rates) and glaucoma related studies.Direct and remote intra-ocular pressure measuring techniques were reviewed by Downs [ 14 ], Nuyen et al. (omicsonline.org)
  • 15 ] reported 24 h fluctuations of intra-ocular pressure, measured with an instrumented contact lens. (omicsonline.org)
  • increased intra-ocular pressure. (mims.com)
  • In four, complete ocular examination was not possible because of cataract. (bmj.com)
  • Changes in in vivo confocal microscopic findings of ocular surface squamous neoplasia during treatment with topical interferon alfa-2b. (bioportfolio.com)
  • To evaluate in vivo confocal microscopy (IVCM) findings of ocular surface squamous neoplasia (OSSN) during treatment with topical interferon alfa-2b (IFN alfa-2b). (bioportfolio.com)
  • In the remainder, none of the ocular findings was directly attributable to hydroxychloroquine. (bmj.com)
  • Ocular inflammation may take the form of numerous eye disorders of varying severity depending on the location of the inflammation. (google.com)
  • Uveitis is typical of these ocular disorders, and is characterized by inflammation of the uveal tract, which encompasses the iris, ciliary body, and choroid. (google.com)
  • 3. Amano Y, Sugimoto Y, Sugita M. Ocular disorders due to eyelash extensions. (clspectrum.com)
  • Induced negative lens defocus results in accelerated ocular elongation and myopia. (arvojournals.org)
  • 6. Berntsen DA, Sinnott LT, Mutti DO, Zadnik K. A randomized trial using progressive addition lenses to evaluate theories of myopia progression in children with a high lag of accommodation. (clspectrum.com)
  • Ocular accommodation is the effecting of refractive changes by changes in the shape of the CRYSTALLINE LENS. (umassmed.edu)
  • [3] [4] The same shape changes that occur to the crystalline lens during accommodation are observed when equatorial tension is applied to any encapsulated biconvex object that encloses a minimally compressible material (volume change less than approximately 3%) and has an elliptical profile with an aspect ratio ≤ 0.6 (minor axis/major axis ratio). (wikia.org)
  • This explains why the aspect ratio of a vertebrate crystalline lens can be used to predict the qualitative amplitude of accommodation of the vertebrate eye. (wikia.org)
  • Accommodation refers to the change in shape and curvature of the crystalline lens of the eye that occurs when an individual attempts to obtain and maintain a focused, high-resolution retinal image of an object of regard [1], including changing focus from far-to-near and near-to-far. (thefreelibrary.com)
  • During accommodation, a significant increase in crystalline lens thickness and axial length was observed, whereas anterior chamber depth decreased (n=20). (bl.uk)
  • A cataract refers to any opacity of the ocular crystalline lens. (google.com.au)
  • The normal crystalline lens is transparent, refractive, and provides adequate accommodation (shape change) to transmit and focus light on the retina at various distances. (google.com.au)
  • Accommodation in the human eye occurs through controlled changes in crystalline lens shape, thickness, and refractive surface placement relative to the cornea. (google.com.au)
  • This book meets the growing demand among ophthalmologists, optometrists and orthoptists, in training and in practice, as well as visual neuroscientists, to have a clear, succinct and well-written textbook to objectively cover the subject of ocular and visual physiology. (springer.com)
  • Ocular and visual physiology is a core knowledge component for these disciplines, and yet is often difficult to understand. (springer.com)
  • Ocular and Visual Physiology - Clinical Application is essential reading for any one hoping to have a clear understanding of the subject. (springer.com)
  • Pupils were 3 mm in diameter, equal, and reactive to light and accommodation Extraocular movements were full. (bmj.com)
  • Accommodation, Ocular" is a descriptor in the National Library of Medicine's controlled vocabulary thesaurus, MeSH (Medical Subject Headings) . (umassmed.edu)
  • An assessment of accommodation, ocular motility, and binocular vision determines how well your eyes focus, move and work together. (aoa.org)
  • In ocular bacterial infection, endotoxin (the lipopolysaccharide component of gram negative bacteria) produces ocular inflammation as indicated by conjunctival and iridial hyperemia, breakdown of blood aqueous barrier and polymorphonuclear neutrophil infiltration into the aqueous humor and iris ciliary body. (google.com)
  • Should a relapse occur after medication is withdrawn, therapy may be resumed or continued on an intermittent schedule if there are no ocular contraindications. (wikidoc.org)
  • During the accommodation reflex, the pupil constricts to increase the depth of focus of the eye by blocking the light scattered by the periphery of the cornea. (wikipedia.org)
  • Neck/shoulder discomfort due to visually demanding near work is influenced by previous neck pain, task duration, astigmatism, eye discomfort and accommodation. (hig.se)
  • Ocular Biomechanics, 2002, P. 128-136. (iitp.ru)
  • 13 . A method that minimizes cataract formation when an agent is provided to an ocular lens, the method comprising piercing the lens with a needle of 30 gauge or thinner, introducing an agent into the lens through the needle, and withdrawing the needle from the lens. (google.com.au)
  • Cataracts are most frequently associated with the normal aging process or pathology, but injury or mechanical violation of the ocular capsule surrounding the lens also causes cataract formation. (google.com.au)
  • Blur-driven, or reflex, accommodation likely provides a large contribution to the overall accommodative response. (thefreelibrary.com)
  • Vergence accommodation also provides a large contribution to the overall accommodative response. (thefreelibrary.com)
  • Lastly, tonic accommodation refers to the default accommodative response in the absence of blur, disparity, and proximal stimuli. (thefreelibrary.com)
  • The previous literature has revealed three types of accommodative dysfunctions in traumatic brain injury (TBI): accommodative insufficiency, pseudomyopia/ spasm of accommodation, and dynamic accommodative infacility. (thefreelibrary.com)
  • Another study found that 16 percent of a sample of 161 nonpresbyopic head injury patients manifested accommodative insufficiency, which the authors termed "poor accommodation" [12]. (thefreelibrary.com)
  • furthermore, the insufficiency was confirmed with the measurement of a reduced accommodative amplitude and/or positive relative accommodation (PRA) [12]. (thefreelibrary.com)
  • They speculated that in humans such neurological deficits might lead to impairment of the oculomotor system, accommodation, and pupillary light reflex (PLR). (thefreedictionary.com)
  • Targets were viewed in a Badal optical system, though a 0.75-mm pinhole to ensure that accommodation and the eye's optics could not influence cues available in the simulations, and to preclude even-error blur cues. (arvojournals.org)
  • Accommodation is the process by which the eye increases optical power to maintain a clear image ( focus ) on an object as it draws near the eye. (wikia.org)
  • [1] As a consequence of the changes in lens shape during human in vivo accommodation, the central optical power of the lens increases and spherical aberration of the lens shifts in the negative direction. (wikia.org)
  • High-Resolution Anterior Segment Optical Coherence Tomography in Intraepithelial Versus Invasive Ocular Surface Squamous Neoplasia. (bioportfolio.com)
  • To evaluate the imaging characteristics of intraepithelial and invasive ocular surface squamous neoplasia (OSSN) on high-resolution anterior segment optical coherence tomography (ASOCT). (bioportfolio.com)
  • This study investigated the anterior ocular anatomic origin of high-order aberration (HOA) components using optical coherence tomography and a Shack-Hartmann wavefront sensor. (elsevier.com)
  • In another approach, bifocal lenses assist accommodation by integrating two different optical corrections onto the same lens. (google.co.uk)
  • Optical defocus influences postnatal ocular development in animal models. (arvojournals.org)
  • Induced defocus from optical lenses has been demonstrated, in a variety of vertebrate species, to result in altered ocular growth in an attempt by the eye to attain functional emmetropia. (arvojournals.org)
  • It is shown that trained observers change their level of accommodation, when viewing a target at a constant distance, to compensate for the varying ocular longitudinal chromatic aberration as the color of the target is changed. (osapublishing.org)
  • Dynamic aspects of these effects are illustrated and it is shown that the ocular longitudinal chromatic aberration increases slightly with accommodation. (osapublishing.org)
  • The invention relates to ocular wavefront-correction profiling. (google.co.uk)
  • The present invention relates to the treatment of ocular inflammation. (google.com)
  • Nicola has taught across all three years of the optometry programme and on postgraduate modules, she has a specialist interests in teaching ocular pharmacology and disease, law and ethics and clinical case management. (plymouth.ac.uk)
  • Clinical Ocular Pharmacology, fifth edition. (ico.edu)
  • Ocular manifestations secondary to various NEOPLASMS in which antibodies to antigens of the primary tumor cross-react with ocular antigens. (bioportfolio.com)
  • Confocal microscopy is a new, emerging, noninvasive technology that can aid in the in vivo assessment of structural changes in several ocular surface diseases at the cellular level. (bioportfolio.com)
  • An ocular assessment or evaluation from an ophthalmologist. (una.edu)
  • The ciliary muscles are responsible for the lens accommodation response. (wikipedia.org)
  • Ocular component changes and accommodation during emmetropization in infants. (osu.edu)
  • Clinical Management of Ocular Surface Squamous Neoplasia: A Review of the Current Evidence. (bioportfolio.com)
  • Download Clinical Ocular Toxicology. (windhover.org)
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  • Hence, this paper provides a general overview of (1) the visual signs and symptoms of PD, (2) the areas of the eye and brain which may be affected by the pathology of PD, and (3) the adverse ocular reactions to treatment. (hindawi.com)
  • Temporal co-variation between eye lens accommodation and trapezius muscle activity during a dynamic near-far visual task. (hig.se)
  • It accumulated selectively in the melanin structures of the fetal eyes and was retained in the ocular tissues for five months after the drug had been eliminated from the rest of the body. (nih.gov)
  • Helmholtz's theory of accommodation is inconsistent with the well-documented flattening of the anterior peripheral surfaces of the lens and negative shift of spherical aberration that occurs during human in vivo accommodation. (wikia.org)
  • There was no spontaneous or gaze nystagmus, saccadic pursuit, or ocular dysmetria. (bmj.com)
  • What is the Difference between Nystagmus and Ocular Motor Apraxia? (pediatriceducation.org)
  • Blur-driven accommodation involves the typically automatic focusing ability when one changes fixation from one object to another in depth in response to the correlated blurred retinal image. (thefreelibrary.com)
  • Stereoscopic retinal scanning laser display with integrated focus cues for ocular accommodation. (washington.edu)
  • In the most frequently studied model of ocular growth and refractive development, the chick, it has been demonstrated that the rate of ocular growth can be manipulated to bring about compensation for a wide range of lens-induced defocus (−10 D to +15 D), predominantly brought about by altered axial ocular dimensions. (arvojournals.org)
  • Accommodation was deficient in the 54 patients in whom it was measured. (nih.gov)
  • To evaluate refractive, binocular vision and ocular alignment outcomes of photorefractive keratectomy (PRK) for the treatment of hyperopia in esotropic patients. (springer.com)
  • Objective recording of accommodation dynamics was performed in four patients with divergence excess exotropia (two true and two simulated) and in three visually normal control subjects. (semanticscholar.org)
  • Therefore, we performed a prospective study of a large cohort of surgical patients undergoing a variety of surgical procedures to describe and determine the frequency and natural history of postoperative changes of accommodation and visual acuity. (asahq.org)
  • Patients undergoing ocular procedures and those receiving any other anesthesia services ( i.e. , monitored anesthesia care, sedation, labor analgesia, or peripheral neural block) were excluded, as were patients who could not provide appropriately informed consent, those who had worn contact lenses within 1 h of preoperative evaluation, and those who ordinarily used corrective lens but were not wearing them at the time of preoperative evaluation. (asahq.org)
  • Patients who were taking ocular medications and those undergoing emergency surgical procedures also were excluded. (asahq.org)
  • Loosely, it refers to ocular adjustments for VISION, OCULAR at various distances. (umassmed.edu)
  • negative accommodation adjustment of the eye for long distances by relaxation of the ciliary muscle. (thefreedictionary.com)
  • positive accommodation adjustment of the eye for short distances by contraction of the ciliary muscle. (thefreedictionary.com)
  • This process of selectively focusing on objects at different distances is referred to as "accommodation. (google.co.uk)
  • With a binocular open view and targets at different distances, the technology measures vergence and accommodation along with standard vision screening parameters. (sbir.gov)
  • Data were collected prospectively with regard to ocular examination and drug dosage. (bmj.com)
  • This limited ocular examination was chosen for several reasons. (asahq.org)
  • Second, the focus ( accommodation ) of the eyes must be adjusted for near vision. (britannica.com)
  • Individual variability of accommodation in children with normal acuity of far and near vision. (iitp.ru)
  • Accommodation-acuity checks with a standard American Medical Association Near Vision Test Card (distance in centimeters), repeated three times for each eye. (asahq.org)
  • Dr. Ciuffreda has been a member of the faculty since 1979 and has conducted innovative research in accommodation and binocular vision and has been recognized with international awards and major research grants. (sunyopt.edu)
  • The initial stimulus for accommodation is a blurred visual image that first reaches the visual cortex. (britannica.com)
  • Many visual tasks such as reading and computer work involve accommodation and downward gaze. (arvojournals.org)
  • This autoimmune response often leads to visual loss and other ocular dysfunctions. (bioportfolio.com)
  • Correct accommodation has been observed in the absence of cues from even-error blur and chromatic aberration, and with 3-mm pupils, suggesting the presence of an 'achromatic cue' to accommodation. (arvojournals.org)
  • To compare the efficacy of topical 5-fluorouracil 1% (5FU) and interferon alfa-2b 1 MIU/mL (IFN) eye drops as primary treatment modalities for ocular surface squamous neoplasia (OSSN). (bioportfolio.com)
  • The primary outcome was to assess the efficacy of PRK in improving ocular alignment. (springer.com)
  • The threshold for consistent responses to positive lens defocus in tree shrew was between +4 and +6 D. The results will enable targeted investigation of the efficacy of positive lens defocus in inhibiting myopic ocular growth. (arvojournals.org)
  • During the accommodation tasks, there was a significant influence of gaze for changes in primary spherical aberration C (4, 0) [ p = 0.004] and secondary spherical aberration C (6, 0) [ p = 0.02]. (arvojournals.org)
  • Ocular manifestations of ataxia-telangiectasia. (nih.gov)
  • To report the manifestations of ataxia-telangiectasia (A-T) on the ocular sensory and motor systems. (nih.gov)
  • Schachar - Ronald Schachar has contributed scientific insight into the mechanism of human accommodation, indicating that focus by the human lens is associated with increased tension on the lens via the equatorial zonules. (wikia.org)
  • [2] Because of the increased equatorial zonular tension on the lens during accommodation, the stress on the lens capsule is increased and the lens remains stable and unaffected by gravity. (wikia.org)
  • The accommodation tension is responsible for an increasing intra-ocular liquid production [ 36 ]. (omicsonline.org)
  • Ocular surface squamous neoplasia (OSSN) is the most common non-pigmented malignancy of the ocular surface and is represented in a wide range of histologic diagnoses, ranging from mild epithelial dysp. (bioportfolio.com)
  • Comparison of topical 5-fluorouracil and interferon alfa-2b as primary treatment modalities for ocular surface squamous neoplasia. (bioportfolio.com)