...better than 20/20 vision?

[Loony BoB]

http://www.opticalexpress.com/email/campaigns/uk/uk-11/img/subheading.gif

Curious. Is there such a thing as better than 20/20 vision? If not, what do they mean? Do they give them some kind of new-age telescopic vision? X-Ray vision? A third eye, allowing 20/20/20 vision?

[Raistlin]

It is possible to have better than 20/20 vision (naturally and with corrective lenses). It would involve the latter number being less than 20 (20/15, for instance). It just means you have even better eyesight than normal.

"20/20", from what I've heard, is not some perfect vision that cannot be surpassed; it's just what's normal for human vision. Many animals, for instance, have far superior vision.

[bipper]

Yeah, 20/20 is just normal. This means you can sit 20 feet away from an eye chart and see what a normal human would see.

so at 20/17 you can stand 20 feet from the chart, and see what a normal person sees at 17 feet from the chart.

It is very crude.

[Loony BoB]

Why don't they have laser surgery set to 20/15 instead of set to 20/20, then? :confused:

[bipper]

Cause 20/20 is a safer bet. if your eye hardware is good you are about garenteed 20/20. The rest actually has to do with the innards of your brain, from what I understand. Vision is 90% eyes, 10% processed by brain. your eyes actually see images upside down, your brain flips them. etc etc.

[Raistlin]

Why don't they have laser surgery set to 20/15 instead of set to 20/20, then? :confused:

Probably because the more the change, the more dangerous the surgery, especially if it goes beyond what's "normal" for our eyes. Normal is normal for a reason - because it's the natural fit of the rods and such in our eyes.

[louby_4eva]

I never knew what 20/20 vision was until this thread. Last time I went to the opticians, I just got told that my long sightedness (new word) was fantastic :D :D :D
If the surgery makes you see better do you think someone with 20/20 vision could get operated on and get better vision??

Smile and Be happy :love:

[Flying Mullet]

I imagine part of it has to do with the "potential" of the eye. It's probably hard to get some people to 20/20 vision, while others can improve beyond that, like 25/20, with very little danger.

[Rye]

My dad has weird vision. He's blind in one eye from untreated lazy eye, but his other eye is better than 20 because it has to overcompensate.

[Khaotic]

Last time I did that chart thing where you cover an eye or whatever they said afterwards to my mom I had 20/15 eye vision, which is apparently better. I guess theres numbers at the end of the chart that say "20/20" and if you can read that line you have 20/20, etc.

[Big D]

Yeah, 20/20 is just normal. This means you can sit 20 feet away from an eye chart and see what a normal human would see.

so at 20/17 you can stand 20 feet from the chart, and see what a normal person sees at 17 feet from the chart.

It is very crude.Ah, that's how it works. Despite having abysmal vision since I was young, I never got around to learning just how the number system works.I guess theres numbers at the end of the chart that say "20/20" and if you can read that line you have 20/20, etc.See bipper's post.

[Araciel]

yeah the vision number thing is funky...when i was a kid i thought each 20 meant the vision level of either eye, but then i wondered which was which.....so i looked it up.

apparently i have 'perfect' 20/20 which actually means average.

[Namelessfengir]

i first heard this from an acuvue advantax commercial. it was saying that 20/20 was the norm but that these lenses could up you to 20/15 because the lens was carved like a magnifier

[Shattered Dreamer]

20/20 vision is over rated nuff said.

[daggertrepe]

It is possible to have better than 20/20 vision (naturally and with corrective lenses). It would involve the latter number being less than 20 (20/15, for instance). It just means you have even better eyesight than normal.

"20/20", from what I've heard, is not some perfect vision that cannot be surpassed; it's just what's normal for human vision. Many animals, for instance, have far superior vision.

Raistlin has the most superior vision of all.

[Mirage]

i first heard this from an acuvue advantax commercial. it was saying that 20/20 was the norm but that these lenses could up you to 20/15 because the lens was carved like a magnifier
That sounds to me as if you would have to sacrifice some of the 'side vision' to get better focus straight ahead.

[Namelessfengir]

that commercial was from at least ten years ago how sad is it that i can call up the commercials the well

[Rye]

It is possible to have better than 20/20 vision (naturally and with corrective lenses). It would involve the latter number being less than 20 (20/15, for instance). It just means you have even better eyesight than normal.

"20/20", from what I've heard, is not some perfect vision that cannot be surpassed; it's just what's normal for human vision. Many animals, for instance, have far superior vision.

Raistlin has the most superior vision of all.

No way, he's totally blind. :p But my vision is even worse than his, and I'm 3 years younger.

[Flying Mullet]

No way, he's totally blind. :p But my vision is even worse than his, and I'm 3 years younger.
You're 93? :confused:

[cloud21zidane16]

20/20 vision is over rated nuff said.

Yeah, i dont trust laser surgery for long term vision:(

[Rengori]

No way, he's totally blind. :p But my vision is even worse than his, and I'm 3 years younger.
You're 93? :confused:
Raist is 100, Rye would be 97.

[blackmage_nuke]

Do they give them some kind of new-age telescopic vision? X-Ray vision? A third eye, allowing 20/20/20 vision?

Death vision, obviously :rolleyes2
I didnt know what 20/20 meant until now

[Jojee]

Sad, I have like 20/five billion vision. Can`t see anything without my contacts ^^

[Momiji]

When I first got glasses back when I was 7, I was told that with them I'd have 20/10 vision. Then again, as a child, my vision was much better then than it is now... at this point, I don't even think I have 20/20 WITH glasses....and without glasses I have to be at least a foot away from something to read it.

My vision sucks.

[Fonzie]

Sad, I have like 20/five billion vision. Can`t see anything without my contacts ^^

[Northcrest]

I just wonder why most commercials give out 20/20 instead of 20/15?

[Rengori]

I just wonder why most commercials give out 20/20 instead of 20/15?


Probably because the more the change, the more dangerous the surgery, especially if it goes beyond what's "normal" for our eyes. Normal is normal for a reason - because it's the natural fit of the rods and such in our eyes.

[Rye]

Actually, I lied. My vision is perfect when I look through my Ritascope. AHAHAHAHA.

[o_O]

The average strength of the eye is already around 20/15, but the "better" your vision is the worse your short-distance vision is. For that reason, they won't laser your eyes past 20/20, since that is strong enough to function without trouble in nearly everything.

Also, don't believe any advertisement that claims to have a success rate of whatever%, because that actually refers to the percentage of patients that achieve 20/40 vision post-operation. It's pretty much a lie. :p

[Serapy]

They said 20/20 or better, I guess that's just a phrase to encourage new customers to get it, thinking the treatment would be godspeed.

[The Unknown Guru]

I have 20/50 vision in my right eye and 20/10 in my left. It's actually kind of cool because it gives me a reason to want a monocle.