Visual acuity is a measure of the spatial resolution of the visual processing
system. ... normal is called 6/6 vision, the USC equivalent of which is 20/20 vision
: At ... Acuity is a measure of visu...
20/40 vision means that the test subject sees at 20 feet what a normal person ...
can see objects at 20 feet that a person with 20/20 vision can only see at 15 feet.
Nov 12, 2015 ... 20/20 is average vision the chart was developed by Snellen. Its the size of a letter
that was choosen as average vision. The test distance is 20 ...
What does 20/20 vision mean? ... 15/15 vision means normal sharpness of vision
at 15 feet, just as 20/20 ... Why do some people have less than 20/20 vision?
Some people are lucky enough to have better than 20/20 vision. If you have 20/
15 vision, it means that what you can see at 20 feet, most people can only see at
What this means is that if you draw a line from the top of a 20/20 letter to the eye
and ... Someone with 20/20 visual acuity does not have “perfect” vision, since it is
... A person with 20/15 acuity can stand 20 feet away from an object and see it as
I was just thinking about what glasses and contacts actually do (help ... I have 20/
15 vision, meaning that at 20 feet, I see what most people see ...
Dec 10, 2015 ... I just went in for my annual check-up and my brother got 20/20 eyesight whereas
I got 20/15 (apparently better than 20/20); what exactly do the.
Q.) What does having 20/20 vision mean and how do they get that number? ... (
Size is indicated on the card or chart as 10, 15, 20, 30, 40, 50, 70, 100, and 200)
Simply, 20/20 means that you can see at 20 feet what you should be able to see
at 20 ... On the other hand, 20/15 shows sharper than average vision. ... It does
not have to bend the light rays from the object to focus the image on the retina in