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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 ...

бинокулярлық

Eyewear; Optometry; Contact lenses; Eye surgery

Both eyes.

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 ...

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Actividade/ Sector: 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 ...