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Photophobia and a small pupil

Clinical history

Urgency
Urgent

A 32-year-old with ankylosing spondylitis has two days of a painful, photophobic red eye.

Examination
Ciliary flush, cells and flare in the chamber, keratic precipitates, a small pupil that dilates poorly, posterior synechiae, low or raised pressure.

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: Slit-lamp photograph

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