Ophthalmology Cornea and sclera 509e7dd0 Ulcus serpens is caused by- A Pseudomonas pyocynaeceous B Pneumoeoccus C Corynebacteria D Gonorrhoea niesseria High-Yield Explanation The characteristic hypopyon corneal ulcer caused by Pneumococcus is called 'ulcus serpens'. Reference:Comprehensive Ophthalmology,AK Khurana,6th edition,pg no.102