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angle-closure glaucoma
glaucoma in which the angle of the anterior chamber is narrowed or completely closed because of forward displacement of the final roll and root of the iris against the cornea. The closure obstructs the flow of aqueous humor from the eyeball, leading to a buildup of pressure. Stages include latent (with few symptoms); intermittent (with increasing
pressure and intermittent pain); acute (with severe pressure, pain, swelling, other symptoms, and usually damage to the optic
nerve); and chronic (with irreversibly increased pressure and damage to eye structures).
Glaucoma. Impairment of outflow of aqueous humor is caused by closure of the anterior angle, with apposition of the iris and
trabecular meshwork, in angle-closure glaucoma (A), and by other obstruction in open-angle glaucoma (B).
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