Which is considered an eye emergency?

A. Cataracts cause gradual, painless vision loss and are not an emergency; they require elective surgical correction. B. Acute angle closure glaucoma is a true ophthalmologic emergency. It involves sudden increase in intraocular pressure, causing severe eye pain, blurred vision, halos, headache, nausea, and can lead to permanent vision loss if not treated immediately. C. Diabetic macular edema (DME) is serious but typically progresses gradually and is not emergent. D. Wet age-related macular degeneration is more urgent than dry AMD but is still not classified as an emergency, although prompt treatment is important to prevent further vision loss.