A 59-year-old female asked:
what is reduced contrast sensitivity in vision & at what stage in open angle glaucoma can it occur?
1 doctor answer • 1 doctor weighed in
Retinal Surgery 29 years experience
Ability to disting-: Uish an image or object from its surrounding space is the contrast sensitivity. It is typically not measured in routine exam. Contrast sensitivity is affected by type of correction. There is a loss of contrast sensitivity at all stages of glaucoma. Some feel that the earliest loss occurs in the blue yellow spectrum. Multifocal lenses can also result in loss of contrast sensitivity.
5.1k viewsAnswered >2 years ago
A 70-year-old female asked:
I have end stage open angle glaucoma with 130 degree field of vision. What does this mean..Doctor vague
2 doctor answers • 4 doctors weighed in
Ophthalmology 26 years experience
Peripheral vision: Visual field testing is used to measure peripheral vision in diseases that affect the optic nerve like glaucoma. The number of degrees usually refers to span of vision in the horizontal plane with both eyes together, used for legal definition or drivers license. 130 degrees is the angle between the left and right edge of your pripheral vision. Normal is about 180. Minimum to drive is about 120.
5k viewsReviewed >2 years ago
Last updated Mar 28, 2015
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