Organism commonly associated with wearing of soft lens:
Correct Answer: Acanthamoeba
Description: refer : AK KHURANA COMPREHENSIVE OPHTHALMOLOGY 6TH EDITION pg 100
Mode of infection of Acanthamoeba
Contact lens wearers using home-made saline (from contaminated tap water and saline tablets)
is the commonest situation recognised for acanthamoeba infection in western countries.
Other situations include mild trauma associated with contaminated vegetable matter, salt water
diving, wind blown contaminant and hot tub use. Trauma with organic matter and exposure to muddy water are the major predisposing factors in developing countries.
Opportunistic infection. Acanthamoeba keratitis can also occur as opportunistic infection in patients with herpetic keratitis, bacterial keratitis, bullous keratopathy and neuroparalytic keratitis.
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