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OCANZ WRITTEN EXAM (ACTUAL) 2024 QUESTIONS AND ANSWERS
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OCANZ WRITTEN EXAM (ACTUAL) 2024 QUESTIONS AND ANSWERS
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OCANZ WRITTEN EXAM (ACTUAL) 64 y/o F complains of pain on chewing and headaches 2 w eeks. Loss of vision in one eye today. a) What is your diagnosis and immediate response? - ANSWERS -Refer as emergency for systemic steroids e.g prednisolone 64 y/o F complains of pain on chewing and headaches 2 weeks. Loss of vision in one eye today. you suspect Arteritic AION. What are likely systemic causes and tests required? - ANSWERS -ESR (erythrocyte sedimentation rate), high then indicated inflamation CRP (C reactive protein) - produced by liver with inflamation platelets temporal artery biopsy Describe two types of Blepharitis. - ANSWERS -Anterior marginal blepharitis (seborhoric - disorder of the ciliary sebaceous glands of Zeis or bacterial - staphylo cocal exotoxin reaction) Posterior marginal blepharitis (MGD) - abnormal meibomian secretion. What is the management of Blepharitis? - ANSWERS -Lid hygiene Warm compresses avoidance of cosmetics, especially eye liner and mascara Weak evidence to suggest antibacterials help. Eye lash growing in touching cornea but lid not turned in. What is the diagnosis and management (pros and cons)? - ANSWERS -Trichiasis Removal with forceps (simple, not painful but may return) Electrolysis (time consumigng and painful ) Cryosurgery (complications include corneal ulcers visual loss and lid notching) A 12 y/o is brought in by their mum with red watery eyes following a cold, it started in the RE 4 days ago followed by the LE 2 days ago. Examination shows conjunctival hype raemia, follicles and infiltrates in the stroma. What is the most likely diagnosis? What is the treatment and prognosis for this condition? What other factors would you discuss in the management of this patient? - ANSWERS -Viral conjunctivitis Advise self limiting, should self ressolve in 1 -2 weeks. Advise not to share towels to avoid spreading . If sight -threatening corneal involvement, unless already visual loss and severe pain then refer to Ophthalmology RGP patient. Current lens is 7.4/10. 00/-4.00, OR shows -0.75DS. There is dimple veiling was more central and the RGP extends at least 1.5mm past corneal limbus on either side. What changes would you make to the lens? What is the new specification? - ANSWERS -Flatten lens and reduce TD as t his will reduce the tear prism. Reducing TD by to 8.00mm is a 0.1mm = 0.5D What causes dimple veiling? - ANSWERS -Gas bubbles forming due to excessive corneal clearance by the contact lens. 22 y/o M with itchy lids that are sticky in the morning and wi th a mucopurulent discharge. This has happened before. The cornea and conjunctiva are clear with no hyperaemia and his vision is good. Tentative diagnosis? and differential diagnosis's. - ANSWERS -Recurrent Bacterial Conjunctivitis DD - epidemic keratoco njunctivitis (e.g. adenovirus) Herpes (simplex or zoster) Chlamydial infection, allergy What are the usual causes of recurrent Bacterial Conjunctivitis? Possible Treatments? - ANSWERS -Contamination of the conjunctival surface with bacteria Bleph Bathing lids and lid hygiene Low evidence to suggest antibacterials can help If corneal involvement or no resolution refer to ophthalmology. Tritan defect on D15, what 4 conditions could cause this? - ANSWERS -Congential Glaucoma AMD Central serous chorior etinopathyThe benefits of buying summaries with Stuvia:
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