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Milled brass pieces form the bridge and ferrule/strap lugs, and pieces of stamped sheet steel form the frame to hold the facepad and lenses. The ferrule / strap lugs are split lengthwise to facilitate removal and insertion of the lenses and rubber facepad. The lugs are secured closed by a salt-blued or parkerized and knurled carbon steel ferrule.
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 ...
Goggles, or safety glasses, are forms of protective eyewear that usually enclose or protect the area surrounding the eye in order to prevent particulates, water or chemicals from striking the eyes. They are used in chemistry laboratories and in woodworking .
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 purpose of the goggles is to disable the patient's ability to visually fixate on an object while at the same time allowing the examiner to adequately visualize the eye. This is done by using high-powered (+20 diopters ) magnifying glasses with an illumination system.
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 ]
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