light reflex

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light reflex

n.
Contraction of the pupil of the eye in response to an increase in light.
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Noun1.light reflex - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smallerlight reflex - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
References in periodicals archive ?
He was comatose and on examination, HR was found to be 118/min, temperature normal, BP 116/80 mmHg, RR on ventilator, no spontaneous movement, no respiratory effort, all deep tendon reflexes and doll's eye reflex absent, pupil was dilated, and fixed.
Common presenting conditions are a white eye reflex, squint, reduced vision, and changes in appearance of the eye
The 3 crab that were missing a reflex upon release were all missing the eye reflex, had been held for 9 or 10 days, and had significant injuries, including carapace cracks.