Ocular Torsion Reveals the Mechanisms of
... photos, Indirect ophthalmoscopy • In 1970s, abnormal fovea-disc relationship was called foveal ectopia; considered pathological, not a strabismic variant ...
... photos, Indirect ophthalmoscopy • In 1970s, abnormal fovea-disc relationship was called foveal ectopia; considered pathological, not a strabismic variant ...
- City Research Online
... The prevalence of primary open angle glaucoma (POAG) in the UK population aged over 40 is estimated to be 2.0%, with 542,000 estimated to have the disease and up to 65% of cases undetected.(1) Prevalence is higher in people described as Afro Caribbean and West African, with onset at a younger age co ...
... The prevalence of primary open angle glaucoma (POAG) in the UK population aged over 40 is estimated to be 2.0%, with 542,000 estimated to have the disease and up to 65% of cases undetected.(1) Prevalence is higher in people described as Afro Caribbean and West African, with onset at a younger age co ...
Ocular pigmentation in white and Siamese cats.
... zone, nor was there any choroidal pigmentation. Hence in vivo the tapetal zone had the appearance of a jungle of red blood vessels (e.g., upper part of Fig. 1, D). Microdissection of the fixed eyecup showed complete lack of choroidal pigmentation. There were the following exceptions. In three eyes a ...
... zone, nor was there any choroidal pigmentation. Hence in vivo the tapetal zone had the appearance of a jungle of red blood vessels (e.g., upper part of Fig. 1, D). Microdissection of the fixed eyecup showed complete lack of choroidal pigmentation. There were the following exceptions. In three eyes a ...
Bull`s eye maculopathy with early cone degeneration
... acuities in 6 of the series were normal or near normal but later deteriorated, although they did not fall below 6/60 in any patient. All the patients tested had colour vision defects and abnormalities on electrodiagnostic testing referable to the cone system. The typical picture was of a bull's eye ...
... acuities in 6 of the series were normal or near normal but later deteriorated, although they did not fall below 6/60 in any patient. All the patients tested had colour vision defects and abnormalities on electrodiagnostic testing referable to the cone system. The typical picture was of a bull's eye ...
IOSR Journal of Dental and Medical Sciences (IOSR-JDMS)
... Myelinated retinal nerve fibres have been referred to as a ‘papillae leporina’ and are incidentally detected as asymptomatic white grey lesions obscuring the retinal details.When making the initial diagnosis it is very important to differentiate myelinated retinal nerve fibreswhich is typically a be ...
... Myelinated retinal nerve fibres have been referred to as a ‘papillae leporina’ and are incidentally detected as asymptomatic white grey lesions obscuring the retinal details.When making the initial diagnosis it is very important to differentiate myelinated retinal nerve fibreswhich is typically a be ...
10 1 Fla Ophth imaging
... variable corneal compensation technology to account for corneal polarization. Optical Coherence Tomography Optical coherence tomography uses near-infrared light to provide direct cross-sectional measurement of the retinal nerve fiber layer. The principals employed are similar to those used in B-mode ...
... variable corneal compensation technology to account for corneal polarization. Optical Coherence Tomography Optical coherence tomography uses near-infrared light to provide direct cross-sectional measurement of the retinal nerve fiber layer. The principals employed are similar to those used in B-mode ...
Scanning Computerized Ophthalmic Diagnostic Imaging
... topographic measurements of either the optic nerve head or posterior retinal structures to detect glaucomatous damage to the nerve fiber layer of the retina or non-glaucomatous retinal changes in the microstructure of the posterior retina (e.g. macular edema, atrophy associated with degenerative ret ...
... topographic measurements of either the optic nerve head or posterior retinal structures to detect glaucomatous damage to the nerve fiber layer of the retina or non-glaucomatous retinal changes in the microstructure of the posterior retina (e.g. macular edema, atrophy associated with degenerative ret ...
Endoscopy for Vitreoretinal Surgeons
... for extraction of nonmagnetic foreign bodies.2 The tube was cumbersome and difficult to use, as it could not be bent. Over the years, technological improvements and optical advances permitted significant miniaturization as well as improved illumination, image magnification, fused glass fiber flexibi ...
... for extraction of nonmagnetic foreign bodies.2 The tube was cumbersome and difficult to use, as it could not be bent. Over the years, technological improvements and optical advances permitted significant miniaturization as well as improved illumination, image magnification, fused glass fiber flexibi ...
Anterior uveal tract metastasis - British Journal of Ophthalmology
... are blood-borne, and since the ophthalmic artery leaves the internal carotid at right angles, it is not readily entered; it is easier for malignant emboli coming by this route to travel straight on and lodge themselves in the minute circulation of the brain and meninges. It is possible, however, tha ...
... are blood-borne, and since the ophthalmic artery leaves the internal carotid at right angles, it is not readily entered; it is easier for malignant emboli coming by this route to travel straight on and lodge themselves in the minute circulation of the brain and meninges. It is possible, however, tha ...
Calcium Oxalate Retinopathy Associated with
... confirm their crystalline content. X-ray diffraction and optical studies were not possible on the crystals obtained from the other tissues because the concentration of crystals in these tissues was insufficient. However, positive identification of calcium oxalate was made by utilization of the histo ...
... confirm their crystalline content. X-ray diffraction and optical studies were not possible on the crystals obtained from the other tissues because the concentration of crystals in these tissues was insufficient. However, positive identification of calcium oxalate was made by utilization of the histo ...
Ocular toxicity after intracameral injection of very high
... Fundus autofluorescence images did not yield additional differences from the contralateral eye. Patient 3 refused to have angiography after reading the consent form. Fluorescein angiograms in the other 5 cases showed diffuse leakage without abnormal retinal perfusion (Figure 3). Indocyanine green an ...
... Fundus autofluorescence images did not yield additional differences from the contralateral eye. Patient 3 refused to have angiography after reading the consent form. Fluorescein angiograms in the other 5 cases showed diffuse leakage without abnormal retinal perfusion (Figure 3). Indocyanine green an ...
2. Background
... the cause of pterygia is unknown, people who work outdoors and are excessively exposed to sunlight and wind more frequently develop pterygia than people who work indoors. Pterygia present as a painless, raised area of white tissues, with blood vessels on the inner or outer edge of the cornea. No tre ...
... the cause of pterygia is unknown, people who work outdoors and are excessively exposed to sunlight and wind more frequently develop pterygia than people who work indoors. Pterygia present as a painless, raised area of white tissues, with blood vessels on the inner or outer edge of the cornea. No tre ...
Glossary - west side eye surgery
... heavy liquid - a type of silicone oil, denser than water, that can be used to press a detached retina back to its original position, a used as a surgical adjunct for detachments with proliferative vitreo-retinopathy or giant tears. hemorrhage – blood escaped from the vascular system, may lie within, ...
... heavy liquid - a type of silicone oil, denser than water, that can be used to press a detached retina back to its original position, a used as a surgical adjunct for detachments with proliferative vitreo-retinopathy or giant tears. hemorrhage – blood escaped from the vascular system, may lie within, ...
The Alabama Age-Related Macular Degeneration Grading
... to 3 hours, 24 minutes) for donor eyes and 23 minutes (range, 6 to 40 minutes) for surgery eyes. The majority of eyes (n = 25) came from a series of 57 consecutive donors or patients accessioned between August 1995 and April 1996. Maculopathy status was unknown at the time of accession, except for t ...
... to 3 hours, 24 minutes) for donor eyes and 23 minutes (range, 6 to 40 minutes) for surgery eyes. The majority of eyes (n = 25) came from a series of 57 consecutive donors or patients accessioned between August 1995 and April 1996. Maculopathy status was unknown at the time of accession, except for t ...
Interpretation of Tonometry and Ophthalmoscopy
... C. Ophthalmoscopy. Our attention is focused on the optic nerve head and optic cup. An examination of the dimensions of the optic cup in relation to the disc and a careful comparison of the two eyes provide important information with respect to glaucoma detection. In this regard, the optic cup may be ...
... C. Ophthalmoscopy. Our attention is focused on the optic nerve head and optic cup. An examination of the dimensions of the optic cup in relation to the disc and a careful comparison of the two eyes provide important information with respect to glaucoma detection. In this regard, the optic cup may be ...
... detachment, diabetic retinopathy, or other retinal diseases. If the vitreous floaters appeared in both eyes (cases 5, 6, 10, 11, and 14) the more severely affected one was selected. Of these 15 patients, six were men and nine were women. Their ages ranged from 42 to 70 with an average age of 56-93 y ...
Glaucoma
... • iris bombee, less depth of anterior chamber; • typical changes of optic disc; • the difference in right and left eye IOP is more then 5 mm Hg. All patients with suspicion of glaucoma must be observed in details in clinics. This diagnosis can exist only one year. ...
... • iris bombee, less depth of anterior chamber; • typical changes of optic disc; • the difference in right and left eye IOP is more then 5 mm Hg. All patients with suspicion of glaucoma must be observed in details in clinics. This diagnosis can exist only one year. ...
Prevention and treatment of age‐related macular degeneration
... GPs can signpost relevant charities or low vision services for practical advice and emotional support (see Box 2). Clinicians must be vigilant to the development of depression, as visual impairment in older people is associated with a higher than normal risk of depression.16 Referral to an ophthal ...
... GPs can signpost relevant charities or low vision services for practical advice and emotional support (see Box 2). Clinicians must be vigilant to the development of depression, as visual impairment in older people is associated with a higher than normal risk of depression.16 Referral to an ophthal ...
Harrison`s Principles of Internal Medicine, 16 Edition
... mechanisms for smooth pursuit, saccades, and gaze stabilization during head and body movements. Large regions of the frontal and parietooccipital cortex control these brainstem eye movement centers by providing descending supranuclear input. ...
... mechanisms for smooth pursuit, saccades, and gaze stabilization during head and body movements. Large regions of the frontal and parietooccipital cortex control these brainstem eye movement centers by providing descending supranuclear input. ...
Sight - UBC Zoology
... image. When the eye is at rest, it is focused for distant vision: the suspensory ligaments are under tension and stretch the lens, making it flatter. Smooth muscle fibers forming the ciliary muscle are embedded within the ciliary body. When they contract, the suspensory ligaments are pulled forward ...
... image. When the eye is at rest, it is focused for distant vision: the suspensory ligaments are under tension and stretch the lens, making it flatter. Smooth muscle fibers forming the ciliary muscle are embedded within the ciliary body. When they contract, the suspensory ligaments are pulled forward ...
Viktor`s Notes * Retinal Disorders
... ischemic necrosis - retina becomes opacified (yellow-white “ground glass” retina); opacity most dense in posterior pole (more thick nerve fiber layer and ganglion cells); opacification takes 15 minutes ÷ several hours to become evident. irreversible cell injury occurs after 90-100 minutes of total ...
... ischemic necrosis - retina becomes opacified (yellow-white “ground glass” retina); opacity most dense in posterior pole (more thick nerve fiber layer and ganglion cells); opacification takes 15 minutes ÷ several hours to become evident. irreversible cell injury occurs after 90-100 minutes of total ...
Retinal evaluation efficacy of a scanning laser ophthalmoscope
... using the optomap® Retinal Exam for screening was demonstrated by the fact that 44% more pathology was discovered by doctors through the optomap® Retinal Exam than with the digital retinal camera images. In their opinion, ultra-widefield scanning laser ophthalmoscopy and central digital photography ...
... using the optomap® Retinal Exam for screening was demonstrated by the fact that 44% more pathology was discovered by doctors through the optomap® Retinal Exam than with the digital retinal camera images. In their opinion, ultra-widefield scanning laser ophthalmoscopy and central digital photography ...
Inning Chen - American Academy of Optometry
... His IOP was still elevated when he returned to the VA eye clinic the next day so combination dorzolamide 2% and timolol 0.5% BID was added to the medical regiment. When he returned 5 days later, the iris and angle neovascularization regressed and the IOP was in the low teens. During the next sev ...
... His IOP was still elevated when he returned to the VA eye clinic the next day so combination dorzolamide 2% and timolol 0.5% BID was added to the medical regiment. When he returned 5 days later, the iris and angle neovascularization regressed and the IOP was in the low teens. During the next sev ...
Clinical Advantages of Swept-Source OCT and New Non
... suffers from a drop off in sensitivity with changing scan depth. Topcon’s Deep Range Imaging OCT-1 (Atlantis)* is an example of an SS-OCT device for posterior ocular imaging. An attractive feature of this SS-OCT is its ability to perform a wide-field scan covering a 12- x 9-mm area of the posterior p ...
... suffers from a drop off in sensitivity with changing scan depth. Topcon’s Deep Range Imaging OCT-1 (Atlantis)* is an example of an SS-OCT device for posterior ocular imaging. An attractive feature of this SS-OCT is its ability to perform a wide-field scan covering a 12- x 9-mm area of the posterior p ...
anaphylactic shock after fluorescein staining corneal abrasion. a
... bulin E (IgE). Immediate hypersentivity reactions commonly involve at least two of the following major organ systems: cutaneous (generalized hives, pruritus, swollen lips-tongueuvula), cardiovascular (hypotension), respiratory (dyspnea due to laryngeal edema, bronchospasm, stridor), and gastrointest ...
... bulin E (IgE). Immediate hypersentivity reactions commonly involve at least two of the following major organ systems: cutaneous (generalized hives, pruritus, swollen lips-tongueuvula), cardiovascular (hypotension), respiratory (dyspnea due to laryngeal edema, bronchospasm, stridor), and gastrointest ...
Fundus photography
Fundus Photography involves capturing a photograph of the back of the eye i.e. fundus. Specialized fundus cameras that consist of an intricate microscope attached to a flashed enabled camera are used in fundus photography. The main structures that can be visualized on a fundus photo are the central and peripheral retina, optic disc and macula. Fundus photography can be performed with colored filters, or with specialized dyes including fluorescein and indocyanine green.The models and technology of fundus photography has advanced and evolved rapidly over the last century. Since the equipments are sophisticated and challenging to manufacture to clinical standards, only a few manufacturers/brands are available in the market: Topcon, Zeiss, Canon, Nidek, Kowa, CSO and CenterVue are some example of fundus camera manufacturers.