2007-08-11 05:00:57 · 2 answers · asked by ? 2 in Health ➔ Optical
I doubt your sight is as bad as 20/300 or you would be pretty close to legally blind. Your prescription strength sounds closer to 20/80 or 20/100. The best way to know is to just ask you eye doctor the next time you go for a check up. I am sure they will have no problem telling you because as a patient it is your right to know the accuracy of your eye sight.
2007-08-15 04:19:12 · answer #1 · answered by blue_eyes 4 · 0⤊ 0⤋
There's not a tight linkage between Rx strength and vision.
With an average-sized pupil, -4.25 would correspond to about 20/300 (6/90, UK and Europe)
But if, without your contacts, you look through a 1mm pinhole held close to your eye (poke a pen tip through a piece of paper or card) your sight will "magically" improve, with no lens power there at all.
2007-08-11 13:45:00 · answer #2 · answered by Pedestal 42 7 · 1⤊ 0⤋