Infectious crystalline keratopathy post-Descemet stripping endothelial keratoplasty

We report a case of a 46-year-old female who developed infectious crystalline keratopathy (ICK) after Descemet's stripping endothelial keratoplasty (DSEK). She underwent DSEK for pseudophakic corneal edema in her left eye. Ten weeks after the procedure, the patient presented with complaints of blurred vision, redness in eye, and ocular pain. Slit lamp examination revealed white nonsuppurative branching deep stromal infiltrate. Microscopic examination of the Gram-stained smear showed gram-positive cocci. Streptococcus viridans was isolated on cultures. Isolated organism was sensitive to linezolid. Based on antibiotic sensitivity report, fortified linezolid (0.2%) eye drop was started on hourly basis. After 10 weeks of topical fortified linezolid (0.2%) therapy, complete resolution of infiltrate with significant corneal scarring and vascularization was seen. Infectious crystalline keratopathy can occur after DSEK.