light reflex


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light reflex

[′līt ‚rē‚fleks]
(physiology)
The postural orientation response of certain aquatic forms stimulated by the source of light; receptors may be on the ventral or dorsal surface.
The response in which the pupil dilates when light levels are lowered, and constricts when light levels are raised.
References in periodicals archive ?
Pupillary light reflex and pupillary diameter were recorded before the application of rocuronium (Tbase), after 10 minutes and then every 20 minutes after administration for 270 minutes (T270).
In the study, the reliability of the presence of the light reflex as a predictor of survival and neurological outcome was analyzed.
Since the pupillary light reflex represents the sum of the entire neuronal input, damage anywhere along this portion of the visual pathway reduces the amplitude of pupil movement in response to a light stimulus.
You must also indicate that you checked the direct (D) and consensual light reflex (C) (light response test).
As the wall becomes tickened the light reflex loses its brightness and becomes somewhat broader, duller and more diffuse in appearance.