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Purpose: To report a case of atypical infectious crystalline keratopathy-like stromal infection secondary to microsporidia wherein diagnosis of the causative organism was aided by use of the Center for Disease Control (CDC) DPDx program., Methods: We report the case of a 73-year-old woman who presented with atypical infectious crystalline keratopathy-like corneal infection without previous surgical history., Results: The patient had previously been treated for recalcitrant corneal infection with topical antibiotics and steroids at an outside provider before referral. Further treatment with topical fortified antibiotics failed to improve the infection. Corneal biopsy was performed and sent to the CDC DPDx for diagnostic confirmation for presumptive microsporidia. The patient underwent therapeutic penetrating keratoplasty without recurrence of ocular infection., Conclusions: Utilization of the DPDx resource may help guide appropriate and timely diagnosis and management strategies in atypical presentations of infectious keratitis., Competing Interests: The authors have no funding or conflicts of interest to disclose., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)

An 8-week-old healthy female infant manifested leukocoria and reduced vision in the left eye. She was found to have bilateral combined hamartomas of the retina and retinal pigment epithelium. There were no other features of neurofibromatosis type 2 and brain imaging was normal. At 6 months of age, subtle posterior subcapsular lens opacity was noted in the right eye. Genetic testing for neurofibromatosis type 2 was advised but not performed. At 3 years of age, leg weakness with quadriceps atrophy led to neuroimaging and detection of multiple tumors, including bilateral vestibular schwannomas and cervical, thoracic, and lumbar paraspinal schwannomas. Molecular testing revealed a nonsense mutation in the neurofibromatosis type 2 gene. Bilateral combined hamartomas were the presenting feature of a severe phenotype of neurofibromatosis type 2., (Copyright 2014, SLACK Incorporated.)

An 8-week-old healthy female infant manifested leukocoria and reduced vision in the left eye. She was found to have bilateral combined hamartomas of the retina and retinal pigment epithelium. There were no other features of neurofibromatosis type 2 and brain imaging was normal. At 6 months of age, subtle posterior subcapsular lens opacity was noted in the right eye. Genetic testing for neurofibromatosis type 2 was advised but not performed. At 3 years of age, leg weakness with quadriceps atrophy led to neuroimaging and detection of multiple tumors, including bilateral vestibular schwannomas and cervical, thoracic, and lumbar paraspinal schwannomas. Molecular testing revealed a nonsense mutation in the neurofibromatosis type 2 gene. Bilateral combined hamartomas were the presenting feature of a severe phenotype of neurofibromatosis type 2.