Last updated: October 2026
A good history narrows the diagnosis before you touch the slit lamp, and a good presentation gets your consultant to the right decision in under a minute. This page gives you a structure for both.
Part 1: Taking an ophthalmic history
Presenting complaint
- Which eye? Always ask. Then ask whether the other eye is truly normal.
- Onset and course: sudden or gradual; getting better, worse or fluctuating.
- Painful or painless: one of the most useful divisions in ophthalmology.
- Visual symptoms checklist:
- Blur for distance, near, or both
- Distortion (metamorphopsia) or a central spot
- Flashes, floaters, or a curtain
- Double vision: does it go when one eye is covered? (monocular vs binocular)
- Missing areas of vision, glare, haloes, colour change
- Red eye checklist: pain, discharge (watery, sticky), itch, photophobia, contact lens wear, trauma.
Background
- Past ocular history: glasses or contact lenses, amblyopia or squint in childhood, previous surgery, laser, injections or trauma.
- Medications, ocular and systemic. Always ask about steroids (all routes), hydroxychloroquine, tamsulosin, anticoagulants and topiramate.
- Allergies, including sulfa allergy before acetazolamide.
- Medical history: diabetes, hypertension, thyroid disease, autoimmune disease, HIV.
- Family history: glaucoma, keratoconus, retinal dystrophies, squint, retinoblastoma.
- Social history: smoking, occupation, driving, ability to put in drops, and who is at home to help.
- Targeted review: for example, headache, jaw claudication and scalp tenderness in an older patient with sudden visual loss (giant cell arteritis).
Part 2: Examination order that avoids mistakes
- Visual acuity for each eye separately, with correction and pinhole
- Pupils, before any dilating drops
- Eye movements and alignment
- Confrontation visual fields (or formal fields)
- Slit lamp examination of the anterior segment
- Intraocular pressure
- Dilated fundus examination
For the technique, see pupil examination and eye examination.
Part 3: Presenting a case to your consultant
Start with a one-line summary
"Mr Shah is a 64-year-old diabetic with two weeks of painless, gradual blurring in his right eye. Vision is 6/36 right, 6/9 left. OCT shows centre-involving diabetic macular oedema in the right eye."
Then follow a consistent order
- History: the key positives and the relevant negatives
- Examination: vision, pupils and IOP first, then findings eye by eye (right then left), front to back
- Investigations: what has been done and what it shows
- Impression: your most likely diagnosis, plus one or two differentials
- Plan: what you suggest, so the consultant can agree or correct you
Tips that make consultants trust you
- Always name the eye. "The eye" is not good enough.
- Commit to a diagnosis and a plan. It is fine to be wrong; it is not fine to have no opinion.
- For an emergency call at night, lead with the problem and what you have already done: "I have a patient with suspected acute angle closure, IOP 52, and I have started acetazolamide and topical drops."
- Know the numbers you will be asked: vision, IOP, and the key OCT measurements.
- Say "I don't know, but I will find out" when you don't know, and then find out.
Next steps: practise with Spot the Diagnosis, learn the abbreviations, and prepare for emergencies on call.