What Causes Dilated Pupils?

What Causes Dilated Pupils?

Medically reviewed by Andrew Greenberg, MDDilated pupils (mydriasis) occur when the pupils open larger than usual. This normally happens in darker lighting to allow more light into the eye, but dilated pupils can also indicate an underlying medical condition or injury.Jump to Key Takeaways.Verywell Health1. Prescription and Over-the-Counter MedicationsVarious prescription and over-the-counter (OTC) medications can cause changes in pupil size due…