What causes enlarged pupils

Dilated pupil may be associated with:There is a possibility of blurry vision with pain in your eyes and a headache.Pinpoint pupils are abnormally small pupils that don't respond to light.Several factors contribute to pupil constriction:Glaucoma, a disease in which there is increased pressure within the eye (the pupil in the affected eye will be dilated).

An eye exam (eye drops used to examine nerves and retina).If anisocoria is more extensive in the dark, you may have a lesion in the sympathetic pathway (a type of pathway related to the nervous system).For instance, cocaine pupils occur in a person high on cocaine.Pinpoint pupils can affect people of all ages and ethnicities.The pupil dilates in poor light to let in more light or will constrict (shrink) in bright light to reduce the amount of light.

Generally, the cause of adie's tonic pupil is unknown;Enlarged (dilated) pupils, guarding or favoring joint, headache, joint pain.According to bmj, if the eyeball sustains a serious injury (where it is actually penetrated), the pupil's shape can be changed so it is stuck in a dilated position (until it is surgically repaired).this kind of injury is also a risk during eye surgery itself, such as during a corneal transplant or cataract surgery.Medications eye injuries recreational drug use brain disease or brain traumaWhile the symptoms above can be considered a guide to help associate symptoms common among the conditions below, this is not a substitute for a diagnosis from a health care provider.

Enlarged pupils are one sign that investigators use to determine intoxication, drug use, and drug addiction.When it is happy, excited or scared, they dilate.Sexual arousal (increased production of oxytocin hormone).