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In eyes with refractive error, the result is often a sharper image. However, a second effect may appear at the common bridge between each two adjacent holes, whereby two different rays of light coming from the same object (but each passing through a different hole) are diffracted back toward the eye and onto different places on the retina.
Most over-the-counter sunglasses do not have corrective power in the lenses; however, special prescription sunglasses can be made. People with conditions that have photophobia as a primary symptom (like certain migraine disorders) often wear sunglasses or precision tinted glasses, even indoors and at night.
Standard sunglasses are unable to filter out eye-damaging radiation. Solar viewers can be used for safe viewing of solar events such as eclipses . The recommended optical density of this eyewear is 5, meaning that the solar viewing filter only permits 1 part in 100,000 of incident light to pass through.
Here's how to choose the right sunglasses that will protect your eyes. UV rays from the sun can damage the eyes, increasing your risk of diseases and cancer. Here's how to choose the right ...
Sunglasses can be worn to hide one's eyes. They can make eye contact impossible, which can be intimidating to those not wearing sunglasses; the avoided eye contact can also demonstrate the wearer's detachment, [citation needed] which is considered desirable (or "cool") in some circles. Eye contact can be avoided even more effectively by using ...
Unlike regular sunglasses with tinted lenses, polarized sunglasses reduce glare in addition to protecting your eyes from harmful rays, so you can avoid squinting through your day and getting eye ...