Case of the Week 639

This week ' s case was generously donated by Drs. Timothy Y. Chou and Roberta J. Seidman. The specimen is a corneal biopsy in an elderly woman who had been receiving ocular steroid treatment (but no systemic immunocompromising agents). The patient went on to develop bilateral punctate keratitis, and corneal biopsy showed the following objects:H&E, 600x and 1000xTissue Gram stain, 1000xWhat is the most likely diagnosis? What additional studies would you recommend to confirm the diagnosis?
Source: Creepy Dreadful Wonderful Parasites - Category: Parasitology Source Type: blogs