Anisocoria is a condition in which the pupil of one eye differs in size
from the pupil of the other eye. Your pupils
are the black circles in the center of your eyes, and they are usually the same
Anisocoria can be caused by several things.
You can be born with this condition or develop it later. You might experience
it on an ongoing basis or only temporarily. In some cases, your doctor might
diagnose an underlying medical condition or other cause of anisocoria.
What symptoms commonly accompany
Depending on the underlying cause of your
anisocoria, you might develop other symptoms too. For example, you might experience:
- blurred vision
- double vision
- loss of vision
- stiff neck
Anisocoria can result from a variety of
things. For example, possible causes include:
- direct trauma to the eye
- bleeding in your skull
- inflammation of your optic nerve
- brain tumor
your doctor diagnose the cause of anisocoria?
If you notice a difference in size between
your pupils, contact your doctor right away.
During your appointment, your doctor will
examine your eyes and take your vital signs. You should also discuss any other
symptoms you’ve been experiencing. For example, be sure to mention if you’ve
- changes to your vision
- sensitivity to light
- eye pain
- stiff neck
Depending on your symptoms and medical
history, your doctor might order one or more tests to help diagnose the
underlying cause of your anisocoria. For example, these tests might include:
- eye exams
- complete blood count
- blood differential
- lumbar puncture, or spinal tap
- CT scan
experienced a head injury before your pupils changed in size, contact 911 or go
to the hospital immediately. You might have a serious eye, brain, or neck
injury that requires emergency treatment.
your treatment involve?
Your doctor’s recommended treatment plan will
depend on the underlying cause of your anisocoria. For example, if an infection
is to blame, your doctor might prescribe antibiotic or antiviral eye drops.
If you have an abnormal growth, such as a
brain tumor, your doctor might recommend surgery to remove it. Additional
options available for treating brain tumors include radiation therapy and
chemotherapy to shrink the growth.
Some cases of uneven pupil size are temporary
or considered to be normal and don’t require treatment.
How can you
Some cases of anisocoria are impossible to
predict or prevent. But you can take steps to reduce your risk of developing
uneven pupils. For example:
- Report any changes to your vision
to your doctor immediately.
- Wear a helmet while playing
contact sports, cycling, or horseback riding.
- Wear protective gear while using
- Wear your seatbelt while driving.
If you notice differences in the sizes of
your pupils, seek medical attention immediately. Your doctor can help identify
and treat the underlying cause of your condition. Following their recommended
treatment plan may help improve your long-term outlook and prevent your
condition from getting worse.