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Severe pain, nausea and a red eye in the evening

Clinical history

Laterality
Right
Urgency
Emergent

A 68-year-old long-sighted woman with a night of severe right eye pain, headache, vomiting and haloes around lights.

Examination
Ciliary injection, corneal oedema, a fixed mid-dilated pupil, a shallow anterior chamber, an eye that feels hard to the touch, pressure often above 50 mmHg.

Presentation typical of this diagnosis, written for teaching. The source dataset provides the image and its label only, with no accompanying clinical record.

The study opens when you begin.

Read the history first and decide what you expect to find. Committing to an expectation before you look is most of what separates interpreting from noticing.

Step 1 of 3 · Read the history

Study: External photograph

Describe the abnormality and give the most likely diagnosis. You will locate the finding first; the answer options stay hidden until you have.