Glaucoma is a group of eye conditions (typically classified as open- or closed-angle, and primary or secondary) characterized by progressive damage to the optic nerve head. Because the optic nerve transmits visual information from the eye to the brain, glaucoma can lead to vision problems if not treated early, and can eventually cause irreversible vision loss if left untreated.[1]
What is glaucoma?
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•Last Updated: May 16, 2025
Glaucoma is a group of eye conditions that cause progressive damage to the optic nerve head, which can lead to vision problems and irreversible vision loss if it is not treated early. It is typically classified as open angle or closed angle and primary or secondary.