Ophthalmology Board Practice Questions - Saudi Board Ophthalmology Final Written Exam

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A contact lens wearer presents with severe, out-of-proportion ocular pain and a ring-shaped corneal infiltrate. Confocal microscopy reveals double-walled cysts. Which of the following is the most appropriate first-line medical therapy?

Topical chlorhexidine 0.02% and polyhexamethylene biguanide (PHMB) 0.02% Topical natamycin 5% and fortified vancomycin 50 mg/mL Topical trifluridine 1% and acyclovir ointment 3% Topical moxifloxacin 0.5% and amphotericin B 0.15%

Correct Answer:

Topical chlorhexidine 0.02% and polyhexamethylene biguanide (PHMB) 0.02%

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