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Unequal pupil size medical term5/7/2023 It’s important to see your eye doctor if you notice a change in the size of a pupil or have any unexpected issues with your vision. These symptoms can also be caused by many other eye and health conditions. Problems with deep tendon reflexes when a doctor taps different parts of the body with a hammer during a neurological exam Symptoms of Adie’s pupil may include:ĭifficulty reading or doing other up-close tasks There are other eye-related and non-eye-related symptoms of Adie’s tonic pupil. The main sign of Adie’s tonic pupil is a pupil that looks larger than the other pupil and does not get much smaller in response to light. This happens so the pupil can control the amount of light entering the eye for better vision. The pupils in the eyes normally get larger (dilate) in dim lighting and get smaller (constrict) in bright lighting. This condition, known as simple anisocoria, may go away on its own. A patient may have pupils of different sizes that both react normally to light. Many conditions other than Adie’s pupil can cause anisocoria. But the condition can also be bilateral, affecting both eyes. In 80% of cases, Adie’s tonic pupil is unilateral, meaning it affects only one eye, resulting in anisocoria. There are many causes of dilated pupils (pupils that are larger than normal) including eye injury, medications, recreational drugs and conditions such as Adie’s pupil. Normal pupil size ranges from 2.0 to 4.0 millimeters in bright light and 4.0 to 8.0 millimeters in the dark. If you have one pupil that is larger than the other, your eye doctor may need to do an exam to check for Adie’s tonic pupil. Adie’s syndrome is most common in women 20 to 40 years old. By Allie Johnson reviewed by Thomas Aller, OD, FBCLA What is Adie’s tonic pupil?Īdie’s tonic pupil, also known as Adie’s syndrome, is a nervous system condition that may cause unequal pupil sizes (anisocoria) and a slow reaction to light in the affected eye or, less commonly, eyes.
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