OEBC OSCE Component common mistakes
OEBC OSCE Component · Understand the traps and how to avoid them.
Opens the station with a rapid-fire closed checklist ('Any floaters? Any flashes? Any pain?') within the first 15 seconds, talks over the patient's opening answer, and never establishes the actual reason for the visit before moving to the slit lamp.
Memorised symptom lists plus time pressure; nerves make candidates fill silence with questions instead of tolerating a pause and letting the patient set the agenda.
What to do instead
Rehearse a fixed three-phase structure and practise it aloud: open invitation ('Tell me what's brought you in today'), a deliberate three-second silence after each answer, then the closed funnel for red flags (onset, duration, monocular vs binocular, associated symptoms, medications, family history). Record yourself and count how often you interrupt.
Ends the encounter with 'See you in a year' without a plain-language summary of findings, without stating what happens next, and without inviting the patient's questions or checking that instructions were understood.
Candidates treat the station as a technical procedure, spend the full time on testing, and treat explanation as optional filler rather than a scored communication skill.
What to do instead
Reserve a final 60 seconds and script it: findings in one sentence with no jargon, plan in one sentence, then a teach-back ('Can you tell me in your own words when you'd come back?') and 'What questions do you have?' Practise until it runs in under a minute.
Seats the patient without checking that the canthus aligns with the marker, leaves magnification at 10x with a wide, maximum-brightness beam, scans the anterior segment with no ordered sequence, and lets the joystick drift rather than locking focus.
The slit lamp is used as a viewing device rather than an optical instrument; candidates have practised on peers without a checklist and default to whatever settings the previous candidate left.
What to do instead
Rehearse a spoken setup sequence every time: introduce yourself, confirm consent, position chin and forehead, align marker, start low magnification with a narrow beam and reduced illumination, then move systematically lids, lashes, conjunctiva, cornea (diffuse then optic section), anterior chamber, iris, lens. Say each step out loud during practice.
Applanates with the Goldmann prism after dialling 15 mmHg, does not instil anesthetic and fluorescein (or does not wait for it to act), lets the prism rest on the lids or lashes, reads the mires before they are centred, and never records a value or mentions calibration.
Rushing the most timed station; the mires are small and candidates close their own eye or lean in rather than adjusting the patient, so they accept a poor endpoint to move on.
What to do instead
Drill the checklist until automatic: check calibration, anesthetic, fluorescein, cobalt blue, widest possible beam, patient positioned and asked to look straight ahead with eyes wide, advance slowly until mires just touch, dial to align, record both eyes. Practise holding the lids against the orbital rim, never on the globe.
Performs gonioscopy under room lights with a full-height bright beam and no coupling agent, does not indent, and grades every angle as open without identifying individual structures.
Unfamiliarity with the lens and fear of discomfort; bright light and a wide beam give a view that 'looks' adequate, so the candidate does not realise the angle is being artificially opened.
What to do instead
Use a fixed protocol: dim the room, instil anesthetic, small (1 mm) beam angled about 60 degrees, focus on the iris, identify structures in order (Schwalbe's line, trabecular meshwork, scleral spur, ciliary body band) inferiorly first. Then perform indentation to distinguish appositional closure from synechiae before grading.
Neutralises at a two-thirds metre working distance and records that lens power as the result without subtracting the working distance, skips fogging and the check for neutrality in both meridians, then takes the autorefractor sphere straight into the final prescription without duochrome or binocular balance.
Working distance is written on the retinoscope but forgotten under pressure, and automated refraction is treated as an endpoint rather than a starting point.
What to do instead
Build two habits: verbalise the working distance correction out loud before recording ('neutral at 67 cm, so minus 1.50 from this'), and always fog by +1.50 D then reduce. Always finish with duochrome, alternate occlusion for binocular balance, and a comparison of the subjective result against retinoscopy, explaining any discrepancy.
Performs only a cover-uncover test at near with no distance target, does not hold a fixation target steady, never alternates the cover to expose a phoria, and reports 'no strabismus' without measuring deviation or describing recovery.
The test looks simple so it is rushed; candidates confuse cover-uncover (reveals tropia) with the alternate cover test (reveals phoria) and have never measured with prisms.
What to do instead
Script the sequence: target at 6 m and at 40 cm, cover-uncover first to detect a manifest deviation, then alternate cover to uncover the latent component, then prism neutralisation with an endpoint of reversal, and describe recovery as fast, slow or absent. Practise naming what each phase detects before each attempt.
Uses the same adult instructions and dim room for a four-year-old, abandons acuity and cover testing the moment the child resists, and does not fall back on fixation preference, matching cards or a modified prism test.
Candidates have only practised on cooperative adults, so a distracted child feels like failure rather than a cue to change technique.
What to do instead
Warm up first: talk to the child, let them handle the occluder, test in a bright room using a matching or Lea symbol card, allow a parent on the lap, and use a game format ('cover the pirate eye'). Rehearse two modified procedures (fixation preference, Krimsky) you can switch to immediately; never leave a finding blank because the child resisted - document what you could establish.
Applies a diagnostic lens without visible hand hygiene, does not inspect the lens for tears or verify orientation with the laser mark, does not assess fit with fluorescein before removing it, and ends without teach-back of insertion, removal and wear schedule.
Hand hygiene happens off-camera or is assumed; orientation and fit assessment get compressed because the candidate is focused on getting the lens onto the eye.
What to do instead
Perform hand washing and drying in full view before touching the lens or patient, verbalise each lens check (integrity, orientation mark, no debris), assess centration, movement, coverage and fluorescein pattern before removal, and finish with patient teach-back plus hygiene, replacement and after-care instructions.
Detects a pressure of 34 mmHg, a suspicious disc or a sudden field loss, finishes the routine examination without comment, then closes with 'the doctor will see you about that' - giving no timeframe, no explanation of urgency and no documentation of the conversation.
Candidates separate 'finding' from 'acting' and fear alarming the patient or overstepping the examiner's expectations, so they hedge and defer.
What to do instead
Use a prepared urgent-findings sentence: what you found, what it may mean, what happens next and how fast, and what to do if symptoms worsen. State a specific timeframe ('today', 'within 24 hours'), confirm the patient can act on it, and write the finding, the discussion and the referral in the record. Rehearse the sentence for two or three classic scenarios until it is fluent.