Why does squinting our eyes slightly improve visual acuity?!

Think of the pupil of your eye as the aperture (or lens opening) in a camera!. When you take a photo with the aperture very small, you have what is known as greater "depth of field", meaning you can clearly see what is close and what is far away as well!. The same thing happens with the pupil of your eye!.!.!.!.with a very small opening you see much more clearly both near and far!. To show you this, look at something that is slightly fuzzy to your eye in the distance; now make an "OK" sign with your hand, and make the opening very very tiny!. Hold that opening up to your eye and look through that tiny opening at the same fuzzy object!.!.!.you will see that it is now much more sharply focused than it would be otherwise!. At any rate, the short answer is that by squinting you accomplish much the same thing!.Www@Answer-Health@Com

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I agree with Jolly!. It's basically a pinhole effect, like a pinhole camera!. By reducing the aperture, you are reducing abberations, which makes things clearer!.

P!.S!. The first poster is wrong!. Nearsighted people have longer eyeballs, and squinting doesn't push on your eye or change its length!.Www@Answer-Health@Com

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I also agree with Jolly and also squinting is very bad for your eyesight!. Why!? Well It makes it worse cause it doesn't help your eyes at all!. I used to squint then my eye dostor told me where your glasses, and don't squint cause its very bad for your eyes!. I hope I helped!Www@Answer-Health@Com

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because it is squeezing the eyeball a bit!. if you are near sighted then you eyeball is too short!. when you squint it squeezes the eyeball from the top to bottom and makes it a bit longer and nearly into its normal round shape!.Www@Answer-Health@Com

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I'm the opposite, when i open up my eyes really really wide i can see clearly!.Www@Answer-Health@Com

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