Reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller.
1Autonomic function was studied using heart rate variability and pupillary light reflex assessment.
2From this time on, up to 6 hr, a pupillary light reflex could not be elicited.
3The relative amplitude of the pupillary light reflex showed a positive correlation to pain thresholds over time and predicted disease progression.
4Light reflex in the left eye was reduced.
Translations for light reflex