what are fixed eyes

Fixed eyes, or more specifically fixed and dilated pupils, refer to a medical condition where the pupils (the black center parts of the eyes) are abnormally large (dilated) and do not respond to changes in light. Normally, pupils constrict (shrink) in bright light and dilate (expand) in dim light, but in this condition, the pupils remain dilated and unresponsive, which can indicate serious brain injury or neurological problems. The term "fixed eyes" is often used clinically to describe this state of unchanging pupil size despite light stimuli, and it can be a sign of severe brain damage or other critical health issues. This condition is sometimes called "blown pupil" and may occur due to brain trauma, stroke, injury to the third cranial nerve controlling eye movement, drug effects, or certain toxic exposures. It may affect one or both eyes and often requires urgent medical attention.