What does it mean when one eye pupil is bigger than the other?

Normally the size of the pupil is the same in each eye, with both eyes dilating or constricting together. The term anisocoria refers to pupils that are different sizes at the same time. The presence of anisocoria can be normal (physiologic), or it can be a sign of an underlying medical condition.

Under what circumstances could a patient have pupils of an unequal size?

Diagnostic criteria. A misshapen and/or asymmetrical pupil is usually due to disease of the iris (Figure 1). Common causes for iris-related anisocoria include previous corneal or cataract surgery, posterior synechiae (adhesions to the lens) from previous uveitis, or ocular injury (traumatic mydriasis).

Can a sinus infection cause one pupil bigger than the other?

Ethmoid or frontal sinusitis can cause a blood clot in the sinus area around the front and top of the face. Symptoms may be similar to those of an eye socket infection with the addition of a pupil that is larger than usual (dilated). Usually, ethmoid or frontal sinusitis affects both sides of the face.

What is the medical term for different sizes of pupils?

The medical term for pupils of different sizes is anisocoria. Anisocoria is a symptom of many conditions but is not a condition on its own. In this article, learn about the possible causes for…

Why are the pupils in my eye different?

Usually, the pupils in each eye dilate or constrict at the same time. When they do not, the pupils may appear to be different sizes. The medical term for pupils of different sizes is anisocoria. Anisocoria is a symptom of many conditions but is not a condition on its own.

What are the symptoms of unequal pupil size?

There are many types of eye injury, and symptoms include eye pain, burning, irritation, bleeding, and more. Normal variation, or anisocoria, is unequal pupil size, and can cause a droopy eyelid or double vision. Dehydration, or not getting enough fluid, causes dry and sticky mouth, tearless crying, and more in children.

Is it normal to have different size pupils?

Answer: Some people have pupils that are slightly different sizes or shapes, so variations can be normal and are usually harmless. However, if there is a significant difference or one of the pupils has only recently changed there could be an underlying issue.