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Persistent and Severe Mpox Keratitis Despite Systemic and Topical Treatment.
Cornea 2024 March 8
PURPOSE: The purpose of this study was to report a case of peripheral ulcerative keratitis in a patient diagnosed with corneal polymerase chain reaction (PCR) and a positive mpox culture.
METHODS: This is a case report.
RESULTS: An immunocompetent 54-year-old man was diagnosed with conjunctivitis in his left eye 15 days after being diagnosed with mucocutaneous monkeypox. He received treatment with dexamethasone 0.1% and tobramycin 0.3% eye drops for 2 weeks. Two weeks after discontinuing this treatment, he developed peripheral ulcerative keratitis and a paracentral epithelial defect. Mpox keratitis was diagnosed by corneal culture and PCR. Corneal inflammation persisted for more than 6 months, manifested as corneal epithelial defect, limbitis, endotheliitis, neurotrophic changes, and trabeculitis. This persistence was observed alongside positive corneal PCR results, despite undergoing 2 courses of trifluorothymidine, 2 courses of oral tecovirimat, and intravenous cidofovir. An amniotic membrane transplantation was then performed.
CONCLUSIONS: Persistent corneal pain and replication are possible with the mpox virus, even in immunocompetent patients. Having received treatment with topical corticosteroids before antiviral treatment for the pox virus may have contributed to the severity and persistence of the clinical condition. Cycle threshold PCR values can be used to support the diagnosis and monitor treatment effectiveness.
METHODS: This is a case report.
RESULTS: An immunocompetent 54-year-old man was diagnosed with conjunctivitis in his left eye 15 days after being diagnosed with mucocutaneous monkeypox. He received treatment with dexamethasone 0.1% and tobramycin 0.3% eye drops for 2 weeks. Two weeks after discontinuing this treatment, he developed peripheral ulcerative keratitis and a paracentral epithelial defect. Mpox keratitis was diagnosed by corneal culture and PCR. Corneal inflammation persisted for more than 6 months, manifested as corneal epithelial defect, limbitis, endotheliitis, neurotrophic changes, and trabeculitis. This persistence was observed alongside positive corneal PCR results, despite undergoing 2 courses of trifluorothymidine, 2 courses of oral tecovirimat, and intravenous cidofovir. An amniotic membrane transplantation was then performed.
CONCLUSIONS: Persistent corneal pain and replication are possible with the mpox virus, even in immunocompetent patients. Having received treatment with topical corticosteroids before antiviral treatment for the pox virus may have contributed to the severity and persistence of the clinical condition. Cycle threshold PCR values can be used to support the diagnosis and monitor treatment effectiveness.
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