Is there a way to determine how many 'degrees' 20/70 vision translates to?

Subject: Is there a way to determine how many 'degrees' 20/70 vision translates to?

Date: Thu Nov 17 17:25:46 2005
Posted by Sharon
Grade level: 10-12 School: No school entered.
City: Los Angeles State/Province: No state entered. Country: No country entered.
Area of science: Medicine
ID: 1132273546.Me

Message:


I came across the USAF's requirements to become a pilot, and it said:

"Distant vision – pilots, uncorrected to 20/70"

So I was just curious exactly what this meant. I went to the eye doctor a 
while back and was told that I am 250 degrees near sighted. 

Thanks!

Re: Is there a way to determine how many 'degrees' 20/70 vision translates to?

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