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The distance (measured in mm) between the center of your pupils of your eyes when looking far away in the distance. If the prescription lenses are not set at the same distance as ...

сфера

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A part of your prescription. The sphere number denotes the strength of the lens in diopters.

ултраљубичасто (УВ) зрачења

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Invisible to the eye, prolonged exposure to solar UV radiation may result in acute and chronic health effects to the eyes. UVC rays are the highest energy, most dangerous type of ...

видљива светлост

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The part of the light spectrum that the eye recognizes as color. The eye can be protected from excessive amounts of visible light through protective eyewear.

контраст

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The difference in brightness between the light and dark parts of an image. A higher contrast lens provides greater visual acuity.

диоптрија

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Unit of lens refractive power, equal to the reciprocal of the lens focus length in meters.

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Dragan Zivanovic

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Sektör/Rtki Alanı Hava durumu Kategori Meteoroloji

торнадо

1. A violently rotating column of air, in contact with the ground, either pendant from a cumuliform cloud or underneath a cumuliform cloud, and often ...