The commonest cause of keratitis in soft contact lens users is –: (A) Acanthamoeba, (B) Staph aureus, (C) Naegleria, (D) Herpes
Answer is A. "Pseudomonas aeruginosa is the most common organism encountered in contact lens-related acute keratitis and corneal ulcer".
- Holland & mannis
Acanthamoeba is the 2nd most common cause.