Question: Is Unequal Pupil Size An Emergency?

Should I be worried if one pupil is bigger than the other?

Physiological anisocoria is when there is a natural, small difference in the size of a person’s pupils.

This is not harmful and does not require treatment.

However, a sudden and pronounced change in one pupil size can indicate a medical condition..

Is Anisocoria serious?

Anisocoria is a condition characterized by an unequal size of the eyes’ pupils. Affecting up to 20% of the population, anisocoria is often entirely harmless, but can be a sign of more serious medical problems.

When should I be concerned about dilated pupils?

If you or someone else notices you have dilated pupils or one of your pupils looks larger than the other after head trauma, seek medical attention immediately. The same is true if you experience sudden dizziness, headache, confusion, balance problems or other symptoms of a possible stroke.

What can cause unequal pupil size?

Other causes of unequal pupil sizes may include:Aneurysm in the brain.Bleeding inside the skull caused by head injury.Brain tumor or abscess (such as, pontine lesions)Excess pressure in one eye caused by glaucoma.More items…•