A less common type of glaucoma known as acute angle-closure glaucoma is a medical emergency. It typically presents with a sudden onset of severe pain in one eye, headache, nausea, and vomiting.

A total of 13,531 patients treated for acute angle-closure (AAC) glaucoma between 2013 and 2019 were identified, and all medications used 1 to 180 days before the onset of AAC were extracted.