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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 ...

ескіру мерзімі

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 ...

флуоресцеин

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 ...

призма

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 ...

жүгірмелі сәуле

Eyewear; Optometry; Contact lenses; Eye surgery

This is a method of applying excimer laser energy. Rather than applying all excimer energy in a broadbeam across the entire ablation area, or the energy in variable spots sizes ...

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Industry/Domain: Water bodies Category: Lakes

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A body of relatively still fresh or salt water of considerable size, localized in a basin that is surrounded by land. Lakes are inland and not part of ...