Definition
Take the Glaucoma Quiz
Glaucoma is a group of diseases that can damage the eye's optic nerve. This damage can lead to vision loss and blindness. But with early treatment, you can often protect your eyes against serious vision loss.
Author: Sinovic, Dianna
Online Medical Reviewer: Haupert, Christopher L, MD
Online Medical Reviewer: Novick, Tara BSN MSN
Online Medical Reviewer: Seltman, Wendy MD
Date Last Reviewed: 09/01/2022
© 2000-2026 The StayWell Company, LLC. All rights reserved. This information is not intended as a substitute for professional medical care. Always follow your healthcare professional's instructions.
Need Help? We're Here for You
Our Member Services team is here to help you understand your benefits, find care, or resolve concerns.
1-800-510-9132
Call NC Quitline
Need support to quit smoking, vaping, or to quit other nicotine products? You can receive support including medicines free of charge:
1-800-784-8669
Schedule Transportation
Need transportation to a doctor's office, pharmacy, or other covered healthcare service? Contact us to arrange your ride.
1-800-510-9132
Provider Directory
Need to find a provider like a Primary Care Physician, Specialist, OB/GYN, or a Psychiatrist?
Provider DirectoryRelated Articles
What Are Dry Eyes?
To be comfortable, your eyes need to be lubricated, or bathed, with tears. But if your eyes don't make enough tears, the surface gets irritated. This is known as dry eyes.
Anatomy of the Eye
The structures of the eye include the cornea, iris, pupil, macula, retina, and the optic nerve.
Cataracts
A cataract is a clouding of the lens of the eye. This is an area that is normally clear. Cataracts can cause cloudy or blurry vision.
How the Eye Works
Sharp vision depends on many factors. The parts of the eye work together to bend (refract) and focus light rays.
