Explaining an abnormal red reflex to a parent — OSCE

Candidate brief (3 minutes to read)

You are the general paediatric registrar in a primary-care clinic. You have just examined six-week-old Aria, brought by her parents for a routine check. On the red-reflex test, performed in a dim room with the ophthalmoscope at about 30 to 45 centimetres, you found a dense white reflex in the right eye and a normal red reflex in the left. Her parents had not noticed anything unusual and feel she sees and behaves normally. You need to explain the finding and its urgency to her parents, arrange the appropriate referral, and advise on what to do and what to avoid before the specialist review. [4] [6]

Examiner mark sheet (communication domain)

Establishes rapport and uses plain language. Greets the parents, introduces themselves, confirms Aria's name, and sits at the parents' level. Avoids jargon; checks understanding with teach-back. [4]

Explains the finding without alarming labels. Frames the result as an abnormal screening finding that needs an eye specialist to look at today — not as a suspected tumour or cancer. Explains that the test shines a light into the eye and that, instead of the usual red glow, the right eye gave a white glow, which means the eye service needs to look at the back of the eye to find out why. Acknowledges the parents' surprise honestly without dismissing it. [6] [3]

Conveys urgency and safety-net without panic. Explains that the review needs to happen promptly — the same day — because some causes are best treated early, while keeping the tone calm and supportive. Tells the parents exactly when and where to be seen, and what would bring them back sooner (a new squint, a visibly white pupil, or any concern that Aria is not seeing). [6] [11]

Gives clear 'do not' instructions. Advises the parents not to put any drops, ointment or home remedy into Aria's eye before the specialist sees her, because these can change the examination. Reassures them that feeding and normal care can continue. [4]

Confirms the follow-up and closes the loop. States that they will receive a referral today, gives the contact and what to expect at the appointment (dilation of the pupil and an examination of the back of the eye), and confirms the plan will be documented and the appointment checked. Offers a follow-up contact for questions. [4] [6]

Structured-discussion probe (after the role-play)

Examiner: What is your prioritised differential, and why is this time-critical? [6]

Candidate (model): A dense white reflex in an infant is leukocoria. I lead with congenital or developmental cataract (common, treatable, and time-critical because a dense infantile cataract causes irreversible amblyopia within weeks if not operated on) and retinoblastoma (the primary intraocular malignancy of childhood, fatal beyond the eye), then persistent fetal vasculature, Coats disease, ocular toxocariasis, retinal detachment and coloboma. It is time-critical on both counts — sight for the cataract, and life for the retinoblastoma — which is why the referral is same-day and no drops are applied first. [6] [11]

Examiner: What would change your management if the finding were an asymmetric but non-white reflex with a new squint in a three-year-old? [4]

Candidate (model): An asymmetric reflex with a new squint is the Bruckner sign of anisometropia or strabismus — an amblyopia risk factor. The urgency is lower than for leukocoria (it is not a mass workup), but it still needs prompt ophthalmology referral for a cycloplegic refraction and a motility assessment, with definitive treatment by glasses and amblyopia therapy (patching or atropine penalisation). Early detection and treatment during the sensitive period give a good prognosis, which is the evidence base for preschool screening. [4] [11]