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Originally Posted by fjtorres
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My vision when I was flight training was 20/10. Lately I think it is closer to 20/15 but my close vision is no where near as good.
I actually have a 20 ft and a 10 ft Snellen chart where I give flying lessons, and the 20 foot goes to 20/15. I personally check my students vision and will check it again if they get a different pair of glasses or get new lazing. The trick to prevent memorization is to use a piece of cardboard with a hole in it for the individual letter. (I ran into fudging a few times.)
When I was in grammar school, and they used the E chart because you might not know your letters, I was 20/5 and a very proud little camper because they said I had the best vision in the school. As I understand it, it has to do with the density of the cones on your retina when you get below 20/20. The eye's optics will get you to the 20/20 but for better resolution, you need a greater than normal density. People like that will see the little pixels better.
In the old days, vision determined who could be a pilot, but now days you can have laser surgery. In fact the service will pay for it. They say the pilots are smarter these days because the people that used to wear glasses can now get lazed and fly. They vary the technique for the jet jockeys because of the G force that can occur.
A young child has wonderful vision and hearing. It just gets worse usually as we get older except the distant vision which if you are far sighted, usually holds up the best of all the senses.