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To the general public, 20/20 vision means that you can see at 20 feet what an average person should be able to see at 20 feet.
If you had 20/100 vision, it would mean you would have to be 20 feet away from something to see it whereas other people would generally be able to see that same object from 100 feet away. You would have VERY POOR vision.
If you had 20/5 vision, it would mean you would see from 20 feet away those objects which people would generally have to be within 5 feet of to see clearly. You would have EXCEPTIONALLY GOOD vision.
So the numerator (top number) is how far away YOU are standing to see clearly.
The denominator (bottom number) is how far away the AVERAGE PERSON would need to stand to see clearly.
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What does it mean if you have 50 20 vision?
Your vision at 20ft is my vision at 50ft.
Is 20 15 vision better than 20 20?
Yes, 20 15 vision is better than 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.
What is the definition of arithmetic mean?
It is the sum of all of the numbers, divided by the number of numbers. For example, what is the arithmetic mean of this set of numbers: 8, 6, 4, 2 ? Add up the numbers: 8+6+4+2=20. The number of numbers is 4; so divide 20 by 4 to get 5, which is the arithmetic mean.
What does 2100 in eyesight mean?
when ophthalmologist says vision in one eye is 2100 is that written 20/100
