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Glaucoma is unhealthy pressure inside the eye. Untreated, it can damage the optic nerve, causing vision loss and blindness.

Review Date 8/18/2020

Updated by: Franklin W. Lusby, MD, ophthalmologist, Lusby Vision Institute, La Jolla, CA. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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