eye disorders
Anisocoria
Key Points
Physiologic anisocoria is very common and causes<1 mm of difference between the pupils in size; greater differences require evaluation. Examining the pupils in light and dark and inspecting an old photograph or the driver’s license of the patient can help identify the abnormal pupil; use of pupillary dilating and constricting drops and further eye examination can provide additional diagnostic information. Serious disorders should be considered in patients with Horner Syndrome or 