30th April 2024

A 40-year-old woman presents with a 2-week history of redness, photophobia, and decreased vision in her right eye.

A 40-year-old woman presents with a 2-week history of redness, photophobia, and decreased vision in her right eye. She reports no significant past medical history but mentions frequent joint pains. On examination, there is noticeable ciliary flush, and the right pupil reacts sluggishly to light.

Which investigation is most appropriate to confirm the diagnosis?