Ulcus serpens is caused by-: (A) Pseudomonas pyocynaeceous, (B) Pneumoeoccus, (C) Corynebacteria, (D) Gonorrhoea niesseria
Answer is B. The characteristic hypopyon corneal ulcer caused by Pneumococcus is called 'ulcus serpens'. Reference:Comprehensive Ophthalmology,AK Khurana,6th edition,pg no.102