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Many of the glasses that claim to block higher amounts of blue light may have a yellow, orange or amber tint, Adair says, but the glasses also come in clear varieties.
In an analysis of 17 randomized control trials from six countries, published in the Cochrane Database of Systematic Reviews Thursday, researchers found blue light glasses may not improve visual ...
The best reading glasses require great lenses, affordability, and durability. Here, experts explain what to find in a pair, and reviewers recommend their faves. These Stylish, Doctor-Approved ...
Corrective lens. A pair of contact lenses, positioned with the concave side facing upward. A corrective lens is a transmissive optical device that is worn on the eye to improve visual perception. The most common use is to treat refractive errors: myopia, hypermetropia, astigmatism, and presbyopia.
Presbyopia is a typical part of the aging process. [4] It occurs due to age related changes in the lens (decreased elasticity and increased hardness) and ciliary muscle (decreased strength and ability to move the lens), causing the eye to focus right behind rather than on the retina when looking at close objects. [4]
Myopia. Myopia, also known as near-sightedness and short-sightedness, [5] is an eye disease [6][7][8] where light from distant objects focuses in front of, instead of on, the retina. [1][2][7] As a result, distant objects appear blurry while close objects appear normal. [1]
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