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A member asked:
One of my pupils is dilated to almost twice the size of the other. what can cause this?
3 doctors weighed in across 2 answers
Anisocoria: Anisocoria refers to unequal pupils. Physiologic anisocoria is very common and normal in up to 20% of people. The variation should be no more than 1mm and both eyes should react normally to light. It can be dangerous if it is a form of horner's syndrome (e.g. Carotid dissection) or from damage to the third nerve (e.g. Aneurysmal expansion) so you should get it checked out!
Answered 4/24/2015
5.1k views
Unless you went to: Eye doctor and he administered eye drops to dilate your pupils, this is a dangerous sign of brain damage. Get to emergency dept of your nearest hospital right away.
Answered 5/7/2018
5.1k views
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