| light adaptation n. The process, chiefly involving constriction of the pupil, by which the eye adapts to an increase in illumination. light  -a·dapt ed (l t -d pt d) adj. |
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| Noun | 1. | light adaptation - the process of adjusting the eyes to relatively high levels of illumination; the pupil constricts and the cones system is operative adaptation - (physiology) the responsive adjustment of a sense organ (as the eye) to varying conditions (as of light) |
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