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Middle East African Journal of Ophthalmology Middle East African Journal of Ophthalmology
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CASE REPORT
Year : 2011  |  Volume : 18  |  Issue : 3  |  Page : 252-255

Radial keratoneuritis as a presenting sign in Acanthamoeba keratitis


Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia

Correspondence Address:
Abdullah Alfawaz
Department of Ophthalmology, King Abdulaziz University Hospital, Airport Road, PO Box 245, Riyadh - 11411
Saudi Arabia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/0974-9233.84062

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The visual outcomes of Acanthamoeba keratitis, a rare cause of corneal infection, can be devastating. This paper reports two contact lens wearers with severe pain and photophobia who presented to the emergency room. Biomicroscopy revealed radial keratoneuritis in both individuals. Tissue culture on a nonnutrient agar plate with Escherichia coli overlay resulted in a heavy growth of Acanthamoeba. The inpatient treatment included 0.02% polyhexamethylene biguanide, chlorhexidine, neomycin/polymyxin B/bacitracin (Neosporin), and oral fluconazole, which successfully controlled the corneal infection and improvement in the best corrected visual acuity in both patients. Infection did not recur during the 12-month follow-up period. Acanthamoeba keratitis can present as radial keratoneuritis, mimicking other common corneal infections resulting in diagnostic and treatment delays. Early diagnosis and prudent treatment of Acanthamoeba keratitis are the keys to restoring vision and avoiding the subsequent need for penetrating keratoplasty.


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