A person’s pupils may be of different sizes (anisocoria) for several reasons, including physical trauma, response to light, and infection. The condition may also be present from birth.

Pupils, the dark circles in your eyes, are usually equal in size. Unequal pupils (anisocoria) may be a sign of a medical issue. Certain medications placed in the eyes can cause the pupils to be ...

A certain portion of the population has a benign condition known as anisocoria, which causes unequal pupil dilation and is no reason for concern.", reports the Mirror. An emergency doctor ...