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A person with 20/20 vision can read an eye chart at a distance of 20 feet. A person with 20/40 vision can't and has to get closer to the eye chart. A person with 20/20 vision can read at 40 feet what a person with 20/40 vision
AnswerIf you have 20/40 vision, it means that when you stand 20 feet away from the chart you can see what a normal human can see when standing 40 feet from the chart. That is, if there is a normal person standing 40 feet away from the chart and you are standing only 20 feet away from it, you and the normal person can see the same detail. 20/100 means that when you stand 20 feet from the chart you can see what a normal person standing 100 feet away can see. 20/200 is the cutoff for legal blindness in the United States.
What else can I help you with?
What does 20 20 vision mean?
It means seeing at 20 feet what a person with normal vision sees at 20 feet. A person who has 20/40 vision can see at 20 feet what the person with normal vision sees at 40 feet, etc. Some people have better than 20/20 vision.
Is a vision of 4040 good?
There is no vision score of 40/40. Vision is scored on the distance a person can see in feet. A vision score of 20/20 would be considered perfect sight.
WHAT DOES 20' MEAN?
Do You mean 20-20 vision?
What does 20 mean?
Do You mean 20-20 vision?
What does -20 mean?
Do You mean 20-20 vision?
What does 20-20 mean?
Do You mean 20-20 vision?
20 20 stands for what?
Do you mean for eyesight?20-20 vision is average vision of human what he can see normally from 20 feet away as a standard.If 20-40 vision, that means you have to stand 20 feet away from an object that the average person can distinguish from 40 feet away.If 20-15, that means you can stand 20 feet away from an object that the average person can distinguish from 15 feet away.
How bad is 20-300 vision?
I am pretty sure that is very bad for u, I have 20-40 vision
How bad is 20 300 vision?
I am pretty sure that is very bad for u, I have 20-40 vision
Why is perfect vision called 20 20?
Perfect vision is called 20/20 because it's a measure of visual acuity. The first "20" represents the standard distance for testing vision, which is 20 feet. The second "20" represents what a person with normal vision can see at that distance.
What does it mean if you have 50 20 vision?
Your vision at 20ft is my vision at 50ft.
What is the name for 20-40 vision?
This is quoted from another question:"Having 20/60 means that you need to be 20 feet away from an object rather than a "normal" person who can see that object at 60 feet."http://wiki.answers.com/Q/Is_20-60_vision_considered_bad
