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re: 20/20 vision for John Emery
Posted on 2/2/20 at 3:21 am to Metaloctopus
Posted on 2/2/20 at 3:21 am to Metaloctopus
quote:
20/20 is perfect vision.
Not strictly correct. 20/20 vision means that you can see objects 20 feet away from you as though a regular person sees objects 20 feet away.
While some ranges outside of 20/20 are generally worse (for instance, 20/100 vision means that you need to be 20 feet away to see an object with the same clarity that a normal person can see from 100 feet away; very difficult to imagine a scenario where this is useful), sometimes non-20/20 vision can actually be better for situations where long-distance viewing is needed. For instance, a fighter pilot's ideal vision may well be 20/10 because of the need to identify potential targets or dangers more quickly than normal people.
ETA: As far as playing football goes, I guess 20/15 or 20/10 vision is better, but I doubt it's of substantial tactical benefit. Fixing vision to 20/20 is probably pretty important (
) but anything "better" would be of dubious value.This post was edited on 2/2/20 at 3:24 am
2
Posted on 2/2/20 at 6:57 am to OKBoomerSooner
quote:
Not strictly correct. 20/20 vision means that you can see objects 20 feet away from you as though a regular person sees objects 20 feet away.
This. When I was younger I had 20/13. I could see at 2 miles what the average person saw at 1.3 miles.
At 60+ years, I now don't even have 20/20. And I miss it.
CS,OM*
*cool story, old man.
Posted on 2/2/20 at 3:59 pm to OKBoomerSooner
quote:
Not strictly correct. 20/20 vision means that you can see objects 20 feet away from you as though a regular person sees objects 20 feet away.
Isn't that kind of like saying "you don't have perfect vision unless you can see through walls"?
At no point in the history of the world have I heard of a single case of "better" than 20/20 vision. And you correctly outlined the reasons having something "better" than 20/20 would change depth of perception which, if one thinks about it, could actually cause more complications than advantages. If your vision is over magnified, objects close to you will be out of focus. Hence why I stated that 20/20 is "perfect" vision. There needs to be a proper balance. If people want to argue over semantics that don't change the original point, then I guess they have to disagree about something to be happy.
I'm astounded by the downvoters, and their lack of critical thought.
This post was edited on 2/2/20 at 4:13 pm
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