If you experienced a head injury before your pupils changed in size, contact 911 or go to the hospital immediately. People with naturally large pupils are prone to light sensitivity. This blog is not meant to address acute neurosurgical emergencies. For example, be sure to mention if you’ve recently experienced:ĭepending on your symptoms and medical history, your doctor might order one or more tests to help diagnose the underlying cause of your anisocoria. The blown pupil, a fixed dilated pupil next to a normal-size reacting pupil is an ominous neurological sign and strongly suggests elevated intracranial pressure and a need for immediate intervention and scanning of the brain.
You should also discuss any other symptoms you’ve been experiencing. At other times, unequal pupil size can be a sign of a problem. The difference is usually very small and the size difference does not affect their vision. About 20 percent of people have differently sized pupils some of the time. If you don’t already have a provider, our Healthline FindCare tool can help you connect to physicians in your area.ĭuring your appointment, your doctor will examine your eyes and have your vital signs taken. Unequal pupil size may be normal or abnormal. If you notice a difference in size between your pupils, contact your doctor right away. Anisocoria, also called Adies tonic pupil or Adie syndrome, is described as uneven pupil size. How will your doctor diagnose the cause of anisocoria?
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