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Health Forum    Optical
Health Discussion Forum

 Stupid Question... someone told me putting lemon juice in your eyes...?
gives you 50/50 vision?

my eyes are OK but bad enough to get glasses.. but im not going to cause its very slight and a wiast of money.. id go through the pain if this was true......

 Contacts make eyes hurt?
My contacts (gas permeable) were fine for like 2 years, until yesterday when I cleaned them. I cleaned them, rinsed them, and put them in the case. Today when I put them in, my eyes started to burn ...

 How many times do you blink your eyes in a day?

 Glasses, contacts, or lasik?
which do you like best and why? [I'm a glasses person]...

 For Contact Wearers?
I've heard before that if you wear your contacts flipped the wrong way it can cause alot of discomfort. Is this true? I wear contacts, and some days they're fine, other day they really ...

 How do i stop going blind?????????
im 17...i've always had a lazy eye every time i go to the eye doc he says it going worse...theres nothin that can be done.....i dont wan to go blind in my left eye??
wat should i do?

 Why does everyone say contacts hurt?
My mom says contacts hurt, is she just lying so I won't get them? Also my friends say contacts hurt. Is this true or is their contacts noot in right, the wrong type of contacts,wrong ...

 Has anyone ever been told they dont need to wear glassess anymore?
i dont think anyone ever has? if so, let me know and ohh, im not on about laser treatment coz u dont need to wear them after wards but can just wearing glasses make your eyes better....

 Am I an ****** just because I won't let my girlfriend get laser eye surgery, glasses or contacts?
She is as blind as a bat, and I am afraid that she will fly away just as fast as one once she figures out that I look like Quasimodo after a car wreck.
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Wow... Yapoo ...

 Just noticed weird thing on eye?
While trying to get an eyelash out of my eye i realised that theres these weird holes on our eyelids. If you pull the skin of ur cheek a bit so you can see the rim of the bottom eyelid you will find ...

 Do i have a problem?
I walk down the street and i think i see someone i know but, as i'm getting closer and closer, the person has nothing to do with the one i thought it was...Do i have a prob with my sight?...

 Caffine makes me cry?
as in, when i drink soda i always get teary eyed. it happens for a lot of things. i really really hate it sicne when a friend sees me she goes, "are you like crying?" and i'm always ...

 Do you need eyes to go to sleep?
My friend's dog had both of her eyes taken out because of cancer. We were wondering if she was able to go to sleep (because when you sleep your eyes roll back) or if she was just laying there. <...

 Is it bad to wear contact lens if im only 14 ?
I am 14 and I really want contact lens...only temporary daily ones not the permenant ones...I would only wear it for going out to parties and playing ...

 Eye contacts?
can eye contacts be for people that can see well because I'm trying to tell my mom that I want color contacts and when you first put it on what happens with the color contacts because my mom ...

I'm getting my eyes checked, because at my physical I failed the sight test terribly even though I tried really hard to do it correctly (eek) and I have to get my eyes checked. If I fail, I don&#...

 What is your eye color?

Additional Details
mine are foresty ...

 Twitching eye is driving me nuts!! Possible causes please?
It's been doing this for 2 weeks now.
Additional Details
I am not lacking sleep....

 I was wondering if I may need glasses.?
Somtimes when I read the words become blurred and I need to fucus more, and then it keeps happening and i need to keep focusing. Also I somtime get headaches from looking at things close for a while. ...

 Eye Contacts wearers?
I just got my first pair of contacts and boy did I have a hard time getting them. Did you have a hard enough time getting them in your eyes, like I or was is a piece of cake?...

The worse your vision, the thicker the glasses lens?is it true?

will dakin
thick lenses are for short sighted people. so i would say true

Not really the case anymore. The thickness of the glass is only a slight factor in today's technology. The way they curve the lense, and where they make the thicker portions are the way they help you see.

no not at all if u go to a decent optician they can get ur lenses thinned down for u, the reason i know this is because i get mine thinned every time i get a new pair and im registered blind coz i have seriously bad vision (obviously) and i dont walk around with glasses like the bottoms of milk bottles

not nowadays, you can buy an extra package so they slim down the lenses.

jim w
this is true mine are thin but i know alot of people with thick ones and they are blind as hell with out them.

go go gadget
yes thats true b/c the lens needs to be stronger to be more effective

Blah Blah Blah
uh, duh?

Courtney B
Im legally blind w/o glasses. My vision is so bad, I cannot see the big "E" on the eye chart w/o contacts or glasses. My vision is about 20/200. My glasses are no thicker than my husband who has like 20/40 vision. His contacts are like -1.25 and mine are like -6.75 (yes they go that high). Nevertheless, my lenses are really expensive to get so thin. If I got "cheap" lenses they'd be coke bottles!

Dr Frank
Yes, and I guess this links to your next question.

Not half as bad as it use to be. Now a days they can make them pretty compact. No more heavy Glass either.

Yes it's true. There is a type of polycarbonate lenses that are thinner than regular plastic lenses, but worse vision still equals thicker lenses.


It certainly is true that the higher the Rx numbers, the thicker the lens will be.
There are high index materials which help keep lenses relatively thin, but in any one of these, the worse the Rx, the thicker the lens (In the centre for + lenses, at the edge for - lenses)
But the size of a lens matters a lot too. With a high-powered Rx, the smallest, roundest, frame shape *that suits you* will give the thinnest, best looking, lenses and glasses.

But the answer to your question can be "false ".
It is possible to have very bad vision and not need glasses at all. This happens where the problem is retinal damage, amblyopia, cataract... a whole range of eye problems where adding spectacles lenses, thick or not, will not raise the vision. So bad vision, but not thick glasses.

With a longstanding amblyopic eye in an adult there *may* be no point at all in having a thick +5 or worse lens in front of it, but I still see people with this because they always have had it, from early childhood. The cosmetic improvement of swapping it for a "balance" lens that looks like the one in the good eye can be massive.

Optometrist, retired.

I have 0 characters to work with
Also the more surface area of the lens the thicker. For instance a kids pair of glasses will be smaller than adults glasses of the same correction level


Not necessarily, but in some cases. Very thick glasses are usually needed for cataract surgery without implants, rare today.

yes im pretty sure


Long-sighted people have the thickest part of their lens in the middle.

Short-sighted people have the thickest part of their lens on the edges.

Though there is technology that reduces the thickness. I'm wearing them now.

Blondie Bear
Yes, unless you pay loads to have thinner lenses

Dan S
True, but not always.

The worse your vision is the greater the correction is required. But, how bad is that vision and what makes it bad.

For example I have a lazy left eye so my right eye could have a thinner lens than that for the left eye. That would unbalance the glasses so both lens are made to weigh the same, but the correction value is different. Furthermore because of the bias the right eye needs addition correct to force it not to offset for the correction to compensate for the lazy left eye.

Now I am getting older and my vision is failing through normal means so I require bifocals; with 4 sets of correction values, two for each lens.

My brother-in-law has thick glasses because he needs more vision correction than I do. The spherical distortion in the cornea needs a thicker lens to make the correction. His vision problems have remained constant for quite a while mine are worsening. Yet he still has thicker glasses than I do. Although overall his vision is better than mine, and his corrected vision is even better since I need to replace my glasses soon. The extra thickness is because the adjustment has to take place over a larger distance. My lenses are thinner because they don't need as thick a correction medium to adjust my vision properly.

Then you can have a difference in the medium, glass is heavier than plastic and you can do more with glass. If you break up the correction as in trifocals or bifocals then the thickness can be decreases since the angle for the correction will be smaller. My brother-in-law needs a larger angle of correction than I do so his glasses are thicker, but my vision is worse than his.

I'm pretty sure they do get thicker as your vision worsens.

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