A 52-year-old woman presented to the emergency department with a 24-hour history of severe pain and blurred vision in the left eye. A left eye exam revealed a mid-dilated pupil unresponsive to light, red conjunctiva, diminished visual acuity, and increased intraocular pressure.

*This Clinical Case Challenge is from the Editorial Team of Docplexus and is meant for educational purposes only. Source: NEJM