Streptococcus Pneumoniae Keratitis After Penetrating Keratoplasty

This study aimed to determine the clinical course of Streptococcus pneomoniae keratitis following penetrating keratoplasty. A retrospective analysis was performed of hospital records of all patients who presented with culture-proven S. pneomoniae keratitis in the corneal graft between January 2011 and January 2016. This study included 8 eyes of 8 patients. Five patients were male, and three were female. The mean age of the patients was 61 ± 9 years (range: 52–77 years). The median time interval between surgery and infection was 11 months (range: 3–25 months). Five eyes (62.5%) had graft failure after 6 weeks of treatment, and three eyes had complete remission with a mild corneal scarring. Re-penetrating keratoplasty was performed in two eyes with emergency tectonic penetrating keratoplasty and disease relapse in the graft. S. pneumoniae keratitis after penetrating keratoplasty is an extremely damaging disease. The clinical and microbiological diagnosis of the disease should be performed urgently, and appropriate treatment should be initiated without delay.