Abstract
To report an atypical presentation of herpes simplex virus (HSV) keratitis followed up using expression levels of HSV DNA in tears. A 22-year-old Japanese woman with hyperemia and foreign body sensation in her left eye was diagnosed with atypical dendritic keratitis. A slit-lamp examination at presentation indicated the presence of a rush of dendritic lesions with a sparse branching pattern and poor development of terminal bulbs; follicular conjunctivitis was also observed. Positivity for house-dust-mite- and cedar pollen-specific IgE antibodies in her serum indicated atopic diathesis. The HSV DNA levels in her tears were measured by a real-time polymerase chain reaction. At the initial visit, the HSV DNA levels in tears were 6.4 × 10 copies/sample in the right eye and 1.6 × 10 copies/sample in the left eye. The keratitis improved after treatment with topical acyclovir ointment, 5 times a day for 7 days, and systemic valacyclovir 1000 mg/d for 5 days. Multiple punctate subepithelial opacities developed in her left eye on day 7, with undetectable HSV DNA in tears, bilaterally. We have successfully monitored the HSV DNA levels in tears using quantitative real-time polymerase chain reaction in HSV keratitis where the corneal findings progressed from atypical dendritic keratitis to multiple punctate corneal subepithelial opacities during the treatment period.
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