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The medical term for pupils of different sizes is anisocoria, and doctors categorize this into three further types, depending on the underlying cause. Many people have very slight differences in the size of their pupils, which is usually not harmful. However, significant size differences or symptoms that come on suddenly can be a sign of dangerous health problems, including a brain aneurysm. Contact a doctor immediately if the pupils change suddenly or with other symptoms, such as drooping or other abnormalities. (责任编辑：) |