Acute angle-closure glaucoma occurs due to a rapid increase in intraocular pressure (IOP) due to outflow obstruction of the aqueous humor. Patients with a shallower angle between the iris and the cornea in the anterior chamber are predisposed to this condition. This is characterized clinically by severe eye pain, headache, nausea, vomiting, blurred vision, and multicolored halos around lights. If left untreated, this can result in optic neuropathy and vision loss. The diagnosis of acute angle-closure glaucoma is confirmed with elevated intraocular pressure (IOP) measurements obtained via tonometry. Normal IOPs are between 10 and 21 mmHg. The pressure in this patient’s right eye was 47 mmHg. Slit-lamp microscope exam showed a shallow anterior chamber, corneal edema, fixed dilated pupil, and conjunctival injection around the limbus (ciliary flush). Uncommonly, retinal and choroidal detachment may cause secondary acute angle-closure glaucoma, as seen in this case. Treatment includes medical and surgical interventions to reduce IOP, address underlying causes, and manage associated pain and nausea.
Take-Home Points
Retinal detachments are seen as a “V”-shaped hyperechoic and freely moving membrane tethered to the optic disc on ultrasound.
Acute angle-closure glaucoma is an ocular emergency. Delays in treatment can result in optic neuropathy and permanent vision loss.