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Clear lens extraction, also known as refractive lensectomy, custom lens replacement or refractive lens exchange is a surgical procedure in which clear lens of the human eye is removed. Unlike cataract surgery , where the cloudy lens is removed to treat a cataract , clear lens extraction is done to surgically correct refractive errors such as ...
The goggles fit tightly against the face so that the only light entering is through the slits, and soot is sometimes applied to the inside to help cut down on glare. [ 2 ] [ 5 ] [ 6 ] The slits are made narrow not only to reduce the amount of light entering but also to improve the visual acuity . [ 2 ]
Typical sunglasses lenses are tinted for protection against bright light or polarized to remove glare; photochromic glasses are clear or lightly tinted in dark or indoor conditions, but turn into sunglasses when they come into contact with ultraviolet light. Most over-the-counter sunglasses do not have corrective power in the lenses; however ...
Photokeratitis can be prevented by using sunglasses or eye protection that transmits 5–10% of visible light and absorbs almost all UV rays. Additionally, these glasses should have large lenses and side shields to avoid incidental light exposure. Sunglasses should always be worn, even when the sky is overcast, as UV rays can pass through ...
Hockey helmets have visors, shields, cages and masks to protect the eyes and face from impact. Hurling helmets protect the eyes from the ball and from near contact with other players. Lacrosse helmets used in men's lacrosse have a cage to protect the face and eyes from impact. Lifeboatman's helmet has a transparent visor to keep sea spray out ...
P rism lenses in glasses can help manage the misalignment of the eyes by bending the light in a way that the brain sees it coming in straight from both eyes. Botox injections to the muscles that ...
The eye wear can also be injection-molded, which gives curvature and allows the lenses to reflect glare and enable the players to have increased visibility in most weather conditions. But most eyeshields are made out of polycarbonate. [7] All visors are made curved in order to cover the entire eye area, shielding it from injury and light.
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