Paper I
2025 March (Supplementary (SAY)) (2019 Scheme) · 100 marks · 180 min

Question

Patient: Mrs. Rose, a 68-year-old woman, Chief Complaint: Gradual loss of vision in both eyes, particularly in the peripheral vision. Medical History: Hypertension, Type 2 Diabetes, and Hyperlipidaemia. No known drug allergies. Family History: Her father had glaucoma. Presenting Symptoms: Mrs. Rose reports difficulty seeing objects in her peripheral vision for the past 6 months. She has had a gradual decrease in her night vision as well. Ophthalmologic Exam: Intraocular pressure (IOP): 28 mmHg in both eyes Visual field: Decreased peripheral vision, with a loss in the superior field. Optic disc: Cupping noted in both eyes. Diagnosis: Open-angle glaucoma.

The drug that should be used cautiously in Mrs. Rose, who has a history of bronchial asthma

  • a) Latanoprost
  • b) Brimonidine
  • c) Timolol
  • d) Acetazolamide
Qxiv1 marksMCQs (Case)

Answer

Correct answer: c) Timolol

Timolol is a non-selective beta-blocker; even as a topical eye-drop, systemic absorption is sufficient to precipitate bronchospasm in patients with bronchial asthma via beta-2 receptor blockade, so it must be used cautiously (or avoided) in this patient. Latanoprost, brimonidine, and acetazolamide do not carry this specific respiratory risk.

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