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Corrective lenses that have two powers of correction. Typically the majority of the lens is corrected for distance vision while a small are is corrected for near vision. Bifocals ...

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Eyewear; Optometry; Contact lenses; Eye surgery

Medical prescription terms were originally all written in Latin. Many of the Latin terms continue to be used today. Eyeglass prescriptions are somewhat different, and you can ...

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Eyewear; Optometry; Contact lenses; Eye surgery

Both eyes.

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Eyewear; Optometry; Contact lenses; Eye surgery

A tiny amount of a fluorescein dye is placed in the tear film. The color will make microscopic dots appear where the eye has become dry. Excessive staining is an indication of dry ...

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Eyewear; Optometry; Contact lenses; Eye surgery

A prism is a lens that will bends light towards its base. Prisms are used to measure the angle of deviation in strabismus to correcting binocular polyopia when the eyes become ...

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Industry/Domain: Chemistry Category: General chemistry

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After separating from graphite, graphene is the world's thinnest and strongest material. This one-atom, carbon-based material can conduct electricity ...