night sight

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sight

[sīt]

vision.

a thing seen.

far sight hyperopia.

near sight myopia.

night sight hemeralopia.

hem·er·a·lo·pi·a

(hem'ĕr-ăl-ō'pē-ă),

Inability to see as distinctly in a bright light as in reduced illumination; seen in patients with impaired cone function.

Synonym(s): day blindness, hemeranopia, night sight

[G. hēmera, day, + alaos, obscure, + ōps, eye]

Farlex Partner Medical Dictionary © Farlex 2012

hemeralopia

Term used to mean either night blindness in which there is a partial or total inability to see in the dark associated with a loss of rod function or vitamin A deficiency; or day blindness in which there is reduced vision in daylight while vision is normal in the dark. Syn. nyctalopia (this term is only synonymous with night blindness); night sight (this term is only synonymous with day blindness). See girate atrophy; congenital stationary night blindness; choroideremia; Oguchi's disease; retinitis pigmentosa.

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References in periodicals archive ?

Even though the night sights no longer glowed I found the white dots made it easier for me to align the rear sight with the front sight.

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"It is hyperbole, but true," says Marc Levoy, a retired Stanford computer science professor who once taught Google's founders Larry Page and Sergey Brin and now works for them on camera projects including Night Sight.

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Carl Zeiss Optronics also builds night vision devices like the NSV 600, a small lightweight night sight for target reconnaissance.

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They say that LG makes fairly good cameras and the Night Sight feature included in this port makes the cameras on these supported phones "even better".

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Among the most touchy jobs is adjusting night sights. However, by using a wooden punch you should be able to adjust such sights without causing the ampules to pop out.

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Kieren Fallon is reunited with Night Sight on whom he finished second at Pontefract in May.