Ads
related to: enlarged blind spot glaucoma pictures
Search results
Results From The WOW.Com Content Network
A scotoma may include and enlarge the normal blind spot. Even a small scotoma that happens to affect central or macular vision will produce a severe visual disability , whereas a large scotoma in the more peripheral part of a visual field may go unnoticed by the bearer because of the normal reduced optical resolution in the peripheral visual field.
Glaucoma: central retinal vein occlusion, cavernous sinus thrombosis; Local lesion: optic neuritis, Ischemic optic neuropathy, methanol poisoning, infiltration of the disc by glioma, sarcoidosis and Lymphoma; Acute lymphocytic leukemia (caused by infiltration of the retinal vessels by immature leukocytes)
Glaucoma is a group of eye diseases that can lead to damage of the optic nerve. The optic nerve transmits visual information from the eye to the brain. Glaucoma may cause vision loss if left untreated. It has been called the "silent thief of sight" because the loss of vision usually occurs slowly over a long period of time. [5]
Subjective measurement of blind spot enlargement is done using visual field testing. [4] In the early stages, using FFA peripapillary hyperfluorescence may be observed. [ 4 ] Since OCT can be used to observe the microstructural alterations in the outer retina, it is the gold standard in diagnosing AIBSES.
I: Enlarged Blind Spot with Paracentral scotoma located 15 degrees superiorly These provide a statistical summary of the field with one number. Although not used for initial diagnosis, they are essential for monitoring glaucoma progression. [ 3 ]
The cup-to-disc ratio (often notated CDR) is a measurement used in ophthalmology and optometry to assess the progression of glaucoma. The optic disc is the anatomical location of the eye's "blind spot", the area where the optic nerve leave and blood vessels enter the retina. The optic disc can be flat or it can have a certain amount of normal ...
Distribution of rods and cones along a line passing through the fovea and the blind spot of a human eye [1]. A blind spot, scotoma, is an obscuration of the visual field.A particular blind spot known as the physiological blind spot, "blind point", or punctum caecum in medical literature, is the place in the visual field that corresponds to the lack of light-detecting photoreceptor cells on the ...
Vision remains normal beyond the borders of the expanding scotoma(s), with objects melting into the scotoma area background similarly to the physiological blind spot, which means that objects may be seen better by not looking directly at them in the early stages when the spot is in or near the center. The scotoma area may expand to occupy one ...