Glaucoma is a group of eye conditions in which the optic nerve becomes damaged, usually due to a rise in intra-ocular pressure, (IOP). If left untreated this damage, (neuropathy), can cause loss of field of vision and ultimately blindness.
Glaucoma falls into two categories. The most common form, open angle glaucoma, occurs when the eye’s drainage canals become clogged over time. This prevents the correct amount of fluid from draining away and causes the internal pressure to rise. A much rarer condition, closed angle glaucoma (also known as acute or narrow-angle glaucoma), occurs when the space between the iris and cornea through which fluid passes is unusually narrow and becomes blocked. When this occurs, the inner eye pressure can rise sharply and cause pain, nausea, blurred vision and redness in the eye. Get the facts in our glaucoma infographic.
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