A 17-year-old girl with keratitis and severe pain in the eye came to the hospital and acanthamoeba keratitis was suspected. The patient gave the history of the following 4 points. Out of these which is not a risk factor for acanthamoeba keratitis –
Corneal infection with acanthamoeba result from direct corneal contact with any material or water contaminated with the organism. The risk factors are : (i) Contact lens use, (ii) Trauma, (iii) Opportunistic infections.
Extended wear contact lens
Exposure to dirty water
Corneal trauma
Squamous blepharitis