Naveed Ahmad Shah, Abdul Ghafoor, Iftikhar Ahmad.
Contact Lens Induced Keratitis.
Ophthalmol Update Jan ;12(1):4-6.

Objective: The purpose of this study was to evaluate the microbiological picture of keratitis associated with contact lens wearing. Material and Method: The study comprised all consecutive patients presenting with contact lens related presumed microbial keratitis during a 12-month period at our department. Detailed demographic data, type of contact lens, duration of lens wear, wearing schedule and lens hygiene were derived from a self-administered questionnaire. Severity of ulcer, corneal scrapings, treatment and final outcome were evaluated. Results: Gram-negative bacilli and Acanthamoeba were recovered from the corneal scrapes of all 35 patients (97% ) were having gram negative bacteria. There was a significantly higher number of Pseudomonas aeruginosa ( 73.68%) and (3%) were having Acanthamoeba infection . Conclusion: Disposable contact lenses seem to have been a predisposing factor for contact lens induced keratitis also when used on a daily wear schedule. Insufficient contact lens care products and/or manufacturing characteristics may be responsible for keratitis, which is also observed in otherwise compliant contact lens users. In 3 of our patients with keratitis, keratoplasty became necessary, indicating that contact lens induced keratitis may result in severe corneal complications.

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