Human eye cross-sectional view. Courtesy NIH National Eye Institute The pink rim of disc contains nerve fibers. The white cup is a pit with no nerve fibers. As glaucoma advances, the cup enlarges until it occupies most of the disc area. Courtesy AgingEye Times Glaucoma is a group of diseases of the optic nerve involving loss of retinal ganglion cells in a characteristic pattern of optic neuropathy. Although raised intraocular pressure is a significant risk factor for developing ...
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Signs and symptoms
... Glaucoma occurs in several types, and signs and symptoms vary depending on the type of glaucoma you have. Primary open-angle glaucoma progresses with few or no symptoms until the condition reaches an ...
Source: MayoClinic

... Internal pressure in your eye, called intraocular pressure, allows your eye to hold its shape and function properly. Intraocular pressure is like air in a balloon — too much pressure inside the ...
Source: MayoClinic

Risk factors
... If your intraocular pressure is higher than what''s considered normal, you''re at increased risk of developing glaucoma. Yet most people with slightly elevated intraocular pressure don''t develop the ...
Source: MayoClinic

When to seek medical advice
... Primary open-angle glaucoma gives few warning signs until permanent damage has already occurred. That''s why regular eye exams are the key to detecting glaucoma early enough for successful treatment. ...
Source: MayoClinic

Screening and diagnosis
... If your doctor suspects that you have glaucoma, he or she may perform a series of tests to detect any signs of damage. Tests include: Tonometry. Tonometry is a simple, painless procedure that measures...
Source: MayoClinic