BIOLOGY | MEDICAL | LIFE on Instagram: "This condition is called Anisocoria—when one pupil is larger than the other. 👁️ In this case, the man said he hit his head—which could be serious. Sudden anisocoria after head trauma may signal: ⚠️ Brain injury or bleeding (like a subdural hematoma) ⚠️ Increased pressure inside the skull ⚠️ Third cranial nerve damage ⚠️ Direct eye trauma But don't panic—some people are born with harmless physiological anisocoria. 🧠 Know the difference. It could save a li