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The most common type of glaucoma, open-angle glaucoma, accounts for approximately 70% to 90% of all cases. The disease is progressive and has no detectable early signs. Elevated IOP is the most significant risk factor for the development and progression of open-angle glaucoma.
As eye pressure builds, it gradually can lead to:
The second most common type of glaucoma — angle-closure glaucoma — occurs when the drainage pathways in the eye become blocked by the iris. As a result, fluid cannot circulate through the eye and pressure increases. The condition can occur suddenly (acute angle-closure glaucoma) or gradually (chronic angle-closure glaucoma).
Your eye care professional can perform a simple eye test to determine if the angle in your eye is normal and wide or abnormal and narrow.