What does 20/400 or 20/200 vision(legally blind) mean?What do they see?Compared with a person from 20/20 visio

Question

thanks

also plz explain it like ur explaining it to a 10 year old lol thanks ^^

Answer 1

Various scales have been developed to describe the extent of vision loss and define "blindness"[1]. Total blindness is the complete lack of form and light perception and is clinically recorded as "NLP", an abbreviation for "no light perception"[1]. "Blindness" is frequently used to describe severe visual impairment with residual vision. In order to determine which people may need special assistance because of their visual disabilities, various governmental jurisdictions have formulated more complex definitions referred to as legal blindess[2]. In North America and most of Europe, legal blindness is defined as visual acuity (vision) of 20/200 (6/60) or less in the better eye with best correction possible. This means that a legally blind individual would have to stand 20 feet from an object to see it with the same degree of clarity as a normally sighted person could from 200 feet. In many areas, people with average acuity who nonetheless have a visual field of less than 20 degrees (the norm being 180 degrees) are also classified as being legally blind. Approximately ten percent of those deemed legally blind, by any measure, are fully sightless. The rest have some vision, from light perception alone to relatively good acuity. Those who are not legally blind, but nonetheless have serious visual impairments, possess low vision.

Answer 2

Vision is based on comparison. Someone with 20/20 vision sees an object 20 yards away the way that the average person does, someone with 20/200 vision sees that object as that average person would see an object 200 yards away, with 20/400 they would see it as the average person saw that object from 400 yards away.

Answer 3

It means that something that's 20 feet away looks to that person like its 400 or 200 feet away. To a person with 20/20 vision an object twenty feet away looks like its 20 feet away.

Answer 4

20/400. You can see at 20 feet, what a normal person can see at 400 feet away. I am legally blind. The best way to describe it is than when I don't have my contacts in, EVERYTHING is like a Monet.

Answer 5

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Alohas

"Legally Blind" can have many meanings..

I have lost all but 18% of my vision to Tunnel Vision and now I am developing cataracts with about 20 or less months to where everything will just be a light grey Fuzz. Mine came froma stroke in the centeral optic nerve.. A Number of the other people in the School for the Blind I go to are Visually Impaired in a number of different ways, However our School, and all schools for the Blind always need more Volunteers..

Do You, any of you,, have the time to help Us??

If you do, then know that you will really be Appreciated by all of us learning to cope with our blindness as we learn to seek to continue our lives as normal as possible with our disability..

Aloha Oi and Thanks for your time Reading this.

Thoughtfuls

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