Which statement describes closed-angle glaucoma?

Prepare for the Adult-Gerontology Acute Care Nurse Practitioner Test. Study with interactive quizzes and detailed explanations. Boost your exam readiness with our diverse question formats and in-depth content coverage.

Closed-angle glaucoma is an acute, emergency condition caused by a rapid blockage of aqueous humor outflow at the iridocorneal angle, leading to a sudden, and often very high, intraocular pressure. The hallmark finding is severe eye pain with possible frontal headache, nausea or vomiting, halos around lights, a red and tender eye, and, importantly, a pupil that is mid-dilated and fixed. This fixed-dilated pupil reflects iris sphincter dysfunction and iris ischemia and helps distinguish this scenario from other types of glaucoma.

Because the pressure rises quickly, vision can deteriorate rapidly if not treated right away, making urgent ophthalmology evaluation essential. Initial management focuses on lowering the intraocular pressure with a combination of medications (such as topical beta-blockers, alpha agonists, carbonic anhydrase inhibitors, and sometimes systemic agents) and then definitive therapy with a laser or surgical procedure to reopen the angle, typically laser peripheral iridotomy.

In contrast, chronic, asymptomatic, or painless gradual vision loss points toward open-angle glaucoma, not closed-angle. Blurred vision with halos can occur in acute angle-closure glaucoma, but the defining feature that signals an acute emergency is the sudden, severe pain with a fixed, dilated pupil.