What term is used to describe a difference in pupil size?

The term that describes a difference in pupil size is anisocoria. This condition can occur in a variety of situations and may be a normal variation or indicate underlying pathology, such as nerve damage, eye trauma, or certain neurological conditions. Understanding anisocoria is important in clinical practice, as it can reveal information about the health of the nervous system and help in diagnosing various medical conditions.

Monocoria, on the other hand, refers to pupils that are of equal size, which is the opposite of what is being asked. Isocoria also describes equal pupil size and serves as a benchmark for what is considered normal vascular innervation and function of the pupils. Myopia, which is nearsightedness, pertains to vision and not pupil size. Anisocoria is, therefore, the only term directly related to the difference in pupil size.