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Aim: To report a case of bilateral microsporidiosis with coexisting fungal infection in one eye., Method: Retrospective interventional case report., Results: A 61-year-old man with uncontrolled diabetes presented with clinical and microbiological features of non-resolving fungal keratitis in the right eye since 3 months and underwent therapeutic penetrating keratoplasty (TPK) for the same. Fungal filaments along with oval bodies suspicious of microconidia were noted on calcofluor stain. A week following TPK, the patient presented with features of viral keratouveitis in the left eye which on microbiology was confirmed as microsporidiosis. Retrospectively, the right eye microbiology slides were reassessed, which confirmed the coexistence of fungus with microsporidiosis by acid-fast stain and polymerase chain reaction., Conclusion: Structural resemblance of microconidia with microsporidial spores can be misleading, thus creating a need for awareness regarding the possible coexistence along with a need to suspect microsporidiosis in nonresponding clinically resembling viral keratitis.