"Glaucoma results from damage to the optic nerve. Usually the damage is from increased pressure in the eye. The damage to the eye is irreversible and glaucoma can lead to blindness. The most common form, open-angle glaucoma, generally appears in middle age and seems to have a genetic component. In this type of glaucoma, vision loss occurs very gradually. One eye is often worse than the other. Other types of glaucoma are closed-angle glaucoma (a medical emergency) and congenital glaucoma (present at birth). Secondary glaucoma is usually associated with another eye disease or disorder, such as a very mature cataract, uveitis, bleeding, eye tumor, or an eye injury.
Glaucoma is a progressive vision condition that can lead to permanent blindness. Learn more about the types, causes, symptoms, risk factors, diagnosis, and treatment of glaucoma.
Glaucoma Questions and Answers
If you or someone you love has been diagnosed with glaucoma, these questions and answers from the experts at WebMD can give you more information about the disease.
What Is Open-Angle Glaucoma?
Open-angle glaucoma is by far the most common type of glaucoma and a top cause of blindness. Learn if you may be at risk for it, what to look for, and how to get treated.
Understanding Glaucoma Symptoms
Learn about glaucoma symptoms from the experts at WebMD.
Slideshows & Images
Slideshow: A Visual Guide to Glaucoma
Learn how glaucoma can affect your vision, and how your doctor diagnoses and treats it.
Slideshow: Essential Screening Tests Every Man Needs
Pictures show men the health screenings a doctor may recommend based on age and personal risk factors.
Slideshow: What Eye Problems Look Like
What do nearsightedness, farsightedness, or going blind look like? See these views and take an eye test in this slideshow from WebMD's medical editors.