Dilated Pupils (Mydriasis): What Is It, Causes & What It Looks Like
![Dilated Pupils (Mydriasis): What Is It, Causes & What It Looks Like](https://my.clevelandclinic.org/-/scassets/images/org/health/articles/22238-dilated-pupils.jpg)
Dilated pupils (mydriasis) are naturally caused by changes in light. They can also be a response to emotional factors, a result of a traumatic injury or a reaction to eye drops, drugs or medication.
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