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