Corneal Ulcers: Everything You Need to Know

Corneal Ulcer: A - Z Guide Definition A corneal ulcer is an open sore or defect on the cornea, the clear, dome-shaped surface that covers the front of the eye. It often occurs due to an infection, trauma, or underlying eye condition. Corneal ulcers are a serious condition that can threaten vision if not promptly treated. Types of Corneal Ulcers 1. Based on Etiology A. Infectious Corneal Ulcers Bacterial: Common organisms include Staphylococcus aureus , Pseudomonas aeruginosa , and Streptococcus pneumoniae . Features: Purulent discharge, hypopyon. Fungal: Common organisms include Aspergillus , Fusarium , and Candida . Features: Dry, feathery margins, satellite lesions. Viral: Herpes Simplex Virus (HSV): Dendritic or geographic ulcers, reduced corneal sensation. Herpes Zoster Ophthalmicus (HZO): Vesicular rash, pseudodendrites. Protozoal: Acanthamoeba . Associated with contact lens use, radial keratoneuritis. Chlamydial: Associated with trachoma and inclusion conjunctivitis. B. Non-Infectious Corneal Ulcers …