What is the average pupil size range in room light?

The average pupil size range in room light typically falls between 2.5 mm and 5.0 mm. In well-lit environments, the pupils constrict to regulate the amount of light entering the eye, contributing to clearer vision and preventing damage to the retina. This constriction is controlled by the muscles around the iris and ensures that pupils usually remain within this range under standard lighting conditions.

Understanding the normal range is crucial for assessment during drug influence evaluations, as deviations from this standard can indicate possible drug effects or health issues. Pupils that are smaller than this range might point towards certain types of drug influence, while larger pupil sizes may suggest other substances or medical conditions.