What does the term anisocoria refer to?

Anisocoria refers to a condition where there is a noticeable difference in the size of the pupils. This can occur for various reasons, including physiological differences, neurological issues, or as a result of trauma. When one pupil is larger than the other, this condition is identified as anisocoria.

In contrast, equal-sized pupils indicate a normal condition, where both pupils are the same size, while pupils reacting equally to light signifies proper function of the pupillary reflex. Fixed and dilated pupils, on the other hand, suggest a more serious issue, potentially indicating trauma, substance use, or severe neurological impairment. Therefore, the correct identification of anisocoria is specifically related to the unequal size of the pupils, which is why the answer detailing that concept is accurate.