Read the finding
Ophthalmology · Pattern recognition
Red eye · triage
6 findings. Cover the answers and work down the list — then flip it and predict the finding from the diagnosis.
Painful, reduced vision, haloes, fixed mid-dilated pupil, hazy corneaAcute angle-closure glaucoma
Painful, photophobia, small/irregular pupil, anterior-chamber cellsAnterior uveitis
Painful, a white corneal spot, contact-lens wearerKeratitis / corneal ulcer
Boring deep pain, non-blanching rednessScleritis
Mild pain, normal vision, redness that blanches with phenylephrineEpiscleritis
Painless, normal vision, a flat red blood patchSubconjunctival haemorrhage