Anisocoria is a condition characterized by an unequal size of the eyes' pupils. It is especially important to seek medical attention if the change occurs after an injury or with other symptoms.Īnisocoria. While not always harmful, a sudden change can indicate serious and dangerous medical conditions. If a person's pupils are suddenly different sizes, it is best to seek medical attention. Similarly, it is asked, should I be worried if one pupil is bigger than the other? The presence of anisocoria can be normal (physiologic), or it can be a sign of an underlying medical condition. You should also see a doctor if you experience other neurological. You experience trauma to one or both of your eyes. You have pupils of unequal size (one pupil is larger/smaller than the other). One or both of your pupils do not react to light properly. The term anisocoria refers to pupils that are different sizes at the same time. You notice a sudden, unexplained change in pupil size. Unequal pupils themselves usually cause no symptoms, but occasionally a person may have trouble focusing on near objects.Ĭan pupils be different sizes? Normally the size of the pupil is the same in each eye, with both eyes dilating or constricting together. More often, unequal pupils are noticed only during a doctor's examination. If pupil sizes are very unequal, a person may notice the discrepancy. Unequal pupil sizes of more than 1 mm that develop later in life and do NOT return to equal size may be a sign of an eye, brain, blood vessel, or nerve disease.Īccordingly, is unequal pupil size an emergency? If there are no other symptoms and if the pupils return to normal, then it is nothing to worry about.

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