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That means you can clearly see an object 20 feet away.
What number is considered legally blind. 61 years experience Ophthalmology. A person is considered to be legally blind if he or she has a best corrected vision of 20200 in their best seeing eye. So there is no prescription value that would say someone is legally blind it is more to do with the vision once corrected.
In the United States an individual has legal blindness if. How many people are legally blind. A legally blind person with vision of 20200 has to be as close as 20 feet to identify objects that people with normal vision can spot from 200 feet.
Since myopia of -6 can be corrected well with glasses there should be no risk of being defined as legally blind. Definition of legal blindness states this about visual field. Did you know that to be considered legally blind and also unable to drive a vehicle in the US your vision is as bad as 20200.
You are considered legally blind if testing finds your peripheral vision is 20 degrees or less a condition often called tunnel vision. Legally blind is defined as having vision NO BETTER THAN 20200 WITH BEST POSSIBLE CORRECTION. If an individual has a visual field of 20 degrees or tunnel vision they may also be considered legally blind.
One is considered legally blind when the vision in the best seeing eye is less than 20100-200. This means that a legally blind individual would have to stand 20 feet 6 m from an object to see it with the same degree of clarity as a normally sighted person. If you are talking about whether he could be considered legally blind that is a definition that only applies to how much you can see with correction.
Legally blind vision In the United States this means your central vision is 20200 or less in the better-seeing eye even with glasses or corrective lenses. Learn More The requirement for 20200 vision in their best eye relates to visual acuity. Under the new criteria if a persons visual acuity is measured with one of the newer charts and they cannot read any of the letters on the 20100 line they will qualify as legally blind based on a visual acuity of 20200 or less.
If when wearing spectacles or contact lenses and the vision in one eye is 20200 or worse then you would be legally blind. Central visual acuity 20200 or less in the better eye with best correction or widest diameter of visual field subtending an angle of no greater. 1 Many people who are classified as legally blind still.
Part 2 of the US. In order to be considered legally blind someone must have vision of 20200 660 in his or her best eye with correction andor have a visual field that is limited to 20 degrees or less in contrast with the 180 degree visual field enjoyed by people with healthy eyes. So if your only eye problem is that you have nearsightedness that requires a -400 correction and you see fine when wearing your correction you are not legally blind.
To be considered legally blind a person must either have worse than 20200 vision in their best eye or a visual field of 20 degrees or less in their best eye for 12 or more months. Doctors in 147 specialties are here to answer your questions or offer you advice prescriptions and more. The formal description of legal blindness is.
For nearsightedness -6 is where high-degree myopia begins. Their vision with glasses or contacts is 20200 or worse or Their visual field is 20 degrees or less in the better-seeing eye. About 1 million Americans were legally blind in 2015 according to the most recent estimate from.
1 It can also refer to a visual field of 20 degrees or less. Legally Blind means your vision cannot be corrected to better than 20200 About 1 in 350000 Americans cannot have their vision corrected to better than 2020. Visual acuity is determined using a Snellen chart.
If youre legally blind your vision is 20200 or less in your better eye or your field of vision is less than 20. Normal vision is 2020. In North America and most of Europe legal blindness is defined as visual acuity vision of 20200 660 or less in the better eye with best correction possible.
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