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Health Forum    Optical
Health Discussion Forum

 What is wrong with sleeping with your contacts in?
I ran out of my daily contacts a few weeks ago. I have been sleeping with my last pair in waiting for my new ones to get here. I sleep with them in. My mom says I'll go blind. LOL...

 Any way i can look at a computer screen without hurting my eyes?
If i look through it with a mirror would it help (er, two mirrors, so it's not reversed)? Is there anything else i could do to avoid directly looking into the light?...

 Is it bad to wear contacts if you don't need them?
Like if you wear contacts without any vision changing stuff.


Angie :)...

 men, what's your favorite eye color on a girl cause im gonna get colored contacts and i have hazel eyes now?
:) be honest too ...

 Please help very urgent!! PROBLEM WITH EYE..?
something is wrong with my sisters eye..
like theres extra sclera i think its called.. theres more sclera in one eye than the other and her veins around that area are very dark red and more ...

Like Seriously?!
Like Stick It Down Yhhur Own throat?!...

 I'm 14, is it okay to start wearing contacts?
I hate wearing glasses. Is it okay if i start wearing contacts now? Am i too young? Will it do any harm to my eyes? Thanks in advance. =D...

 how to i remove an eyelash from my eye !?
i can see it and its p*ssing me of :(!?

it hurts ...

 I just got contacts and I have some questions.?
First off, I got them four days ago. I loved them and was having no problem but then yesterday I was out at lunch and my left eye started to burn, so without thinking I took out my contacts without ...

 I sprayed myself in the eye with perfume at bath and body works...?
and now my vision is blurry in my left eye...but the eye isnt red though it feels like there is something in it. how long will it take to go away and hsould i see a dr?? ...

 my son wants to have his left eye replaced with a robotic eye where can i get this done?
if you know how much it will cost that would be great and if you know of any doctors that will perform the operation.

p.s. he want to be able to have x-ray ...

 Do you wear glasses full time?
How did you feel when you realised you need to wear glasses full time? Did the doctor tell you? Did you decide for yourself?

How bad were your eyes then?...

 what colour contacts wud suit a black girl?
who has brown eyes and darkish brown ...

 Why does my eyesight keep getting worse?
I'm 16. I started needing glasses when I was 13, when my vision was 20/50.
Then When I was 15, it became 20/300.
Now, less than a year later, I can't read anything without them. I&...

I want contacts, mum wont pay, help! II WONT wear my glasses ither|!!!
Additional Details
and also im too young to get a job.

im going blind...:'( i feel so depressed....

 One eye is bigger than the other? Help!?
One of my eyes is bigger than the other. How do I fix it? How do I make them both the same size again?
Additional Details
Sorry everyone! I meant eyelid!...

 i want a blurry eyes but how?
how my eyes become blurry?i want because i want a glasses because my cousin had a glasses and i want also but my eyes is not blurry but how to be blurry my eyes?...

 How can I help my boyfriend?
My boyfriend has slight strabismus (cross-eye) and he says he can't watch movies in 3D. This really saddens me, and he doesn't like it either even though he tries to hide it. He's ...

 Do you wear glasses? Yes or No?
Yea or NO...

 MY eyes have been twitching like crazy??? Help!!?
Hello anyone out there...My eyelids have been twitching like crazy for the last few days now. I thought it was tiredness, but i've been getting 7-9 hrs sleep since its summer. What is it then???...

Hello, Love :)
Why is it that when you squint your eyes you can see clearer?

Additional Details
some of you said i need glasses... i know :D
i have some and contacts but i just took then out awhile ago and i just couldnt see anything! (overly dramatic obviously)
but everything was blurry and so im like... i should ask this question!
thanx for your help ppl! :)

because your like an asian, and they are always smart

I don't think that works for me. Doesn't seem to help.

i thin kits because
then the ight doesnt bother you

Chris K
This doesn't apply to everyone only those who need glasses. I'm not being sarcastic either you should be able to see as clear as when you squint.

IT flexes a muscle.

I don't think it makes you see clearer...i just think it makes the object your trying to stare at easier to focus on or something.
no ideaa. good question! haha.

It doesn't really work for me. My problem is so bad that the only way it can be improved at all is with glasses or contacts.

I changed my name.
because it takes a lot of the peripheral interference out so you're looking at a smaller spectrum; therefore focusing on a smaller spectrum. it's like watching normal t.v. and when you squint it's on hi-def because you are focusing on a smaller portion

When you squint something inside your eye stretches and focuses thus making you see clearer. But it is best that you get glasses so u dont have to squint:D

you need glasses

I think it has to do with your astigmatism of your eyes. I used to work for some ophthalmologists in college and they explained astigmatism like this - a lens in a "normal" eye is shaped like a basketball but those (like myself) who have astigmatism have an lens shaped more like a football which causes shapes to be distorted.

For some reason, people who have astigmatism see better when they squint (must have something to do with the concentrated focus of the lens when squinting). You should probably see an eye doctor for a vision test to see if you need glasses.

If your vision is otherwise good, sometimes people who are fatigued can get blurry eyes and squinting can help focus your eyes.

Heather L
i think you may need glasses hon, thats the only way squinting your eyes could make you see clearer

cause it lets in less light. Less light lets your eyes focus on things more accurately
A long time ago glasses were made of metal, cause there was a tiny hole in the metal that youd look out of...
just a little trivia for ya

Nikki Rae
The same reason why, if you poke a little hole in a piece of paper and look through it, everything is clearer. It makes it easier for your eyes to focus on something.

Pedestal 42
It's the pinhole camera effect.
If your eyelids are held narrower than your pupil size, teh effective aperture to the eye is reduced.
Try a 1mm hole in a piece of paper, held near the eye , to see the effect at its best.

But it only works if the eye is out of focus to begin with so if you notice a definite improvement with squinying or a pinhole, it is likely you have a significant refractive error.

The pinhole principle works by only allowing the straightest light rays to enter the eye, reducing blur irrespective of the focus error. It draws nicely on a diagram, but is more tricky to describe in words.

Your eyeballs are like cameras. When you squint it decreases the aperture, the opening through which light is admitted, which increases the depth of field, the gradual decrease in sharpness on either side of the focused distance.

When light travels through a lense that bends light it is bent the most at the edges. It is bent the least toward the middle. There is one tiny ray of light that is unchanged and travels straight. If you have a refractive error in your eye, means that this the light being bent by your conrnea and your inner lense does not meet your retina correctly. The ones in the middle are actually more correct than the ones in the periphery. When you squint your eyes you are shutting out the light that is being deviated the most and your brain can use the light rays that are deviated the least to see with. It can be du;licated with the pinhole effect as well. It does not work for all people. But for some it is interrestingly effective.

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