Abstract
Rationale:To report a case of herpes simplex virus (HSV) linear endotheliitis in a 57-year-old male who had underwent keratoplasty 10 years ago. The characteristic linear keratic precipitates (KPs) resembled the Khodadoust line in graft rejection. The differential diagnosis is essential, because the treatment regimen is different between HSV linear endotheliitis and graft rejection.Patient concerns:The patient developed a sudden onset of ocular pain and a decrease in visual acuity in his right eye. The patient had received penetrating keratoplasty in the eye 10 years ago.Diagnoses:The ocular disease was evaluated using several ocular examinations, including best-corrected visual acuity (BCVA), intraocular pressure, slit lamp examination, fundus examination, and aqueous humor tap. Characteristic linear endothelial KPs were found both in the host cornea and graft cornea. Stromal edema was evident in both the donor and recipient corneas. The aqueous humor was sampled for viral polymerase chain reaction (PCR) analysis. The sample was investigated for the possible presence of HSV I, HSV II, cytomegalovirus, and varicella zoster virus. The PCR was positive for HSV I and negative for HSV II, cytomegalovirus, and varicella zoster virus.Interventions:The patient was treated with both antiviral and steroid treatments for 1 month. Thereafter, prophylactic antiviral treatment was continued.Outcomes:The subjective symptoms had improved and the cornea edema and the linear endothelial KPs had disappeared. The BCVA improved from 20/200 to 20/80.Lessons:HSV linear endotheliitis is the most severe form of HSV endotheliitis. This case showed characteristic endothelial KPs, which were different from the Khodadoust line of graft rejection.
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