Pupil size changes naturally with age - this is totally normal. In some cases, however, anisocoria can be a sign of a serious problem, such as a viral infection, an issue with the nervous system or an eye injury or condition. Pupils also typically get smaller when focusing on nearby objects and grow larger when focusing on faraway objects.īoth pupils may be the same size, but some people have pupils of different sizes ( anisocoria). Low light – Pupils normally dilate to between four and eight millimeters in size. This size varies based on the amount of light in the environment:īright light – Pupils normally constrict to between two and four millimeters in size. Are my small pupils normal?Īverage sized pupils generally range from two to eight millimeters. While your pupils normally open (dilate) in low light and grow smaller (constrict) in bright light, they also naturally get smaller as you age - this is not a sign for concern.īut, knowing more about whether your small pupils are normal or indicate a problem is key to understanding if you’ll need medical attention. With miosis, one or both pupils consistently measure less than two millimeters across. This light is focused on the retina to allow eyesight.Ībnormally constricted pupils ( miosis), also known as pinpoint pupils, may be a sign of a larger issue with your health.
Pupils naturally get larger and smaller thousands of times a day, regulating the amount of light that enters the eye. The pupil is the opening in the center of the colored part of the eye ( iris). What’s the difference between a “normal” pupil and a small pupil?
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