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FillYourBrain
08-08-2003, 11:10 AM
I have just completed my evolution to geekdom. I got glasses this week. Only one of my eyes is blurred so its just plain ol glass on the left side. Does anyone understand the meaning of the numbers though? When people talk about 20/20 vision, what does that mean? More specifically, the numbers written on my glasses are 48/18/140. What's that?

confuted
08-08-2003, 11:13 AM
I believe that 20/20 means you can see at 20 units of distance what you should be able to see at 20 units of distance.

I've never seen three numbers written though. Perhaps it means you can see at 48 feet what you should be able to see at 18 feet... are you far sighted?

FillYourBrain
08-08-2003, 11:14 AM
that's what she said. But my two eyes are different. My left eye has no blurring at all.

mart_man00
08-08-2003, 11:22 AM
My left eye has no blurring at all.
Thats what i have.

confuted
08-08-2003, 11:24 AM
How many times did your mother tell you not to stick your finger in your eye? Did you listen? No; you stuck your finger in your right eye. Now look what happened.

edit: Oh, and the vision in each eye is normally at least a little different, because there is a dominant eye, but your more extreme.

FillYourBrain
08-08-2003, 11:25 AM
I was guessing that 48/18/140 meant (right eye) / (left eye) / (something else) as in 48/20 on right, 18/20 on left. Does that sound right?

FillYourBrain
08-08-2003, 11:25 AM
yeah, now I know better. No more sticking my finger in my eye. Darn, it was a lot of fun too.

RoD
08-08-2003, 11:28 AM
i have 200/200 vision without my glasses and 40/40 with them lol, my eyes are horrible.

FillYourBrain
08-08-2003, 11:38 AM
so wait. does that mean that the two numbers are for each eye?

volk
08-08-2003, 11:49 AM
Maybe this might help...or not... (http://www.howstuffworks.com/question126.htm)

FillYourBrain
08-08-2003, 11:55 AM
ok, so based on what I'm seeing on the web and at the link you posted:

I have 20/48 on the right side and 20/18 on the left side. 140 means nothing to me.

Govtcheez
08-08-2003, 12:09 PM
> 140 means nothing to me.

It's how smart the glasses make you look, in IQ points.

volk
08-08-2003, 12:13 PM
...the numbers written on my glasses are 48/18/140. What's that?

Oops, forgot to mention...

FillYourBrain
08-08-2003, 12:20 PM
oh crap! it's the frame size?!?! So I have no idea what my prescription is then

volk
08-08-2003, 12:27 PM
Originally posted by FillYourBrain
oh crap! it's the frame size?!?! So I have no idea what my prescription is then

You could, you know, ask the person who wrote the prescription for you.

FillYourBrain
08-08-2003, 12:28 PM
but then I'd have to get up out of my chair and go there.

volk
08-08-2003, 12:33 PM
Originally posted by FillYourBrain
but then I'd have to get up out of my chair and go there.

Don't optometrists use phones these days? :confused:

FillYourBrain
08-08-2003, 12:38 PM
hmmm. I wonder.....

08-08-2003, 12:53 PM
>>> 48/18/140. What's that?

48 inch busts on 18 year olds raise your blood pressure to 140.

RoD
08-08-2003, 03:01 PM
Originally posted by FillYourBrain
so wait. does that mean that the two numbers are for each eye?

the ones i gave yes, not on your frames. I have 200/200 vision, which means left/right eyes.

FillYourBrain
08-08-2003, 03:09 PM