Which term describes pupillary constriction?

Miosis is the term used to describe pupillary constriction. This physiological response can occur in various situations, including exposure to bright light or as a reaction to certain medications or conditions affecting the eye. During miosis, the circular muscles of the iris contract, leading to a reduction in the size of the pupil.

On the other hand, mydriasis refers to pupillary dilation, which is the opposite of miosis. Isocoria describes a condition in which both pupils are of equal size, regardless of their constricted or dilated state. Hyperopia, commonly known as farsightedness, pertains to a refractive error in which distant objects can be seen more clearly than nearby ones and is not related to pupil size or function. Understanding these terms provides insight into the various responses of the pupil and their significance in clinical observations.