threshold night vision

См. также в других словарях:

• Dark adaptation threshold — (DAT) is a vision test that measures the adjustment of the eye occurring under low levels of illumination. When light enters the eye, it ultimately reaches the rods and cones, which are two types of cells in the retina. Rods handle vision in low… …   Wikipedia

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• Peripheral vision — is a part of vision that occurs outside the very center of gaze. There is a broad set of non central points in the field of view that is included in the notion of peripheral vision. Far peripheral vision exists at the edges of the field of view,… …   Wikipedia

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• Rod cell — NOTOC Infobox neuron neuron name = Rod cell image neuron = Fig retine.png caption neuron = Cross section of the retina. Rods are visible at far right. location = Retina function = Low light photoreceptor neurotranmitter = Glutamate morphology =… …   Wikipedia

• Tapetum lucidum — The tapetum lucidum (Latin: bright tapestry , plural tapeta lucida) [ [http://www.archives.nd.edu/cgi bin/lookup.pl?stem=tapet ending=um Latin Word Lookup ] ] is a layer of tissue in the eye of many vertebrate animals, that lies immediately… …   Wikipedia

• Headlamp — Headlight redirects here. For other uses, see Headlight (disambiguation). High Beams redirects here. For the urban legend also known by that name, see Killer in the backseat. A motor scooter s front with an impractical number and variety of… …   Wikipedia

• primate — primatal, adj., n. primatial /pruy may sheuhl/, primatical /pruy mat i keuhl/, adj. /pruy mayt/ or, esp. for 1, /pruy mit/, n. 1. Eccles. an archbishop or bishop ranking first among the bishops of a province or country. 2. any of various… …   Universalium