![]() If your pupils become dilated and don’t constrict when exposed to light, you should schedule an appointment. ![]() During this time, you will be sensitive to light because your pupils can’t constrict to limit the amount of incoming light.īecause pupil dilation can indicate drug use or head injuries, doctors often check the eyes after an injury or accident. In cases of medication or illegal drug use, dilated pupils typically resolve on their own within a few hours or a few days. What Problems Can Pupil Dilation Indicate? The dilating drops wear off in just a few hours. The condition is often accompanied by other serious eye complications.ĭuring regular eye exams, doctors often use medical solutions to dilate your pupils and examine the backs of your eyes. Congenital aniridia: This is a very rare condition in which one or both eyes miss part or all of the iris.The condition may cause blurry vision or headaches, but is ultimately harmless. Benign episodic unilateral mydriasis: This is a condition in which one pupil suddenly becomes dilated.Adie’s pupil: This is a rare genetic condition in which one pupil is larger than the other and is either slow to react to light or doesn’t react at all.There are a few other conditions that cause dilated pupils: Drug UseĬertain types of illegal drugs cause dilated pupils and affect how your pupils react to light. Head injuries, strokes, brain tumors, and complicated surgical procedures, such as cataract surgery, can all cause pupil dilation. These include:Īn injury to the eye that damages your iris can lead to pupil dilation. ![]() What Causes Pupil Dilation? MedicationsĬertain over the counter and prescription medications can cause pupil dilation as a side effect. However, pupils can also dilate-become large and stop responding normally to light. It’s normal for your pupils to change size depending on the amount of light they’re exposed to. They are openings in the middle of the irises and let light enter your retinas so you can see. ![]() The dark circles at the centers of your eyes are called pupils. ![]()
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