Being blind, is just merely the condition of not having visual understanding. 20/200 indicates that you would stand 20 feet away from an item and see the exact same thing as somebody with typical vision would see from 200ft.
A regular individual has a visual field of 180 degrees, with somebody who is blind having simply 20 degrees. Alot of times we presume that when somebody is lawfully blind that they can not see anything at all.
Among the leading reasons for loss of sight is Diseases. The most typical reasons for loss of sight worldwide as figured out by WHO (World Health Organization) are:
– cataracts (47.8%).
– glaucoma (12.3%).
– age-related macular degeneration (AMD) (8.7%).
– corneal opacity (5.1%).
– diabetic retinopathy (4.8%).
– trachoma (3.6%).
Developing nations are considerably more susceptible to establishing visual disability as it is among the effects of avoidable or treatable conditions, that they merely just can not manage.
20/200 implies that you would stand 20 feet away from an item and see the exact same thing as somebody with regular vision would see from 200ft.
A typical individual has a visual field of 180 degrees, with somebody who is blind having simply 20 degrees. Alot of times we presume that when somebody is lawfully blind that they can not see anything at all.