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This is why people in their 40s start needing reading glasses. Some blue-light glasses also include a plus lens to help bring your focus in. These might help reduce eye strain.
While researchers found no notable benefits to blue-light glasses, they didn’t find any key harmful consequences of using them either (besides the potential headaches and discomfort associated ...
Sellers of the glasses, which come in prescription and non-prescription varieties, claim they help keep the eyes healthy, reduce eye strain, improve visual performance, and even help people fall ...
Color blindness (color vision deficiency) is the decreased ability to see color or differences in color. It can impair daily color tasks such as selecting ripe fruit or choosing clothing, as well as safety-related tasks such as interpreting traffic lights. While the disability of color blindness is considered minor, the use of color in safety ...
Pinhole glasses, also known as stenopeic glasses, are eyeglasses with a series of pinhole-sized perforations filling an opaque sheet of plastic in place of each lens. Similar to the workings of a pinhole camera, each perforation allows only a very narrow beam of light to enter the eye which reduces the size of the circle of confusion on the ...
X-ray specs. X-ray specs or X-ray glasses are an American novelty item, purported to allow users to see through or into solid objects. In reality, the spectacles merely create an optical illusion; no X-rays are involved. The current paper version is sold under the name "X-Ray Spex"; a similar product is sold under the name "X-Ray Gogs".
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