[Infectious crystalline keratopathy occurring after penetrating keratoplasty].

Infectious crystalline keratopathy is a chronic corneal infection, characterized by interlamellar opacities that are shaped like crystal formations. In the majority of cases, Streptococcus viridans is cultured. We report the case of a 74 year old man, presenting with corneal infection in a donor graft after penetrating keratoplasty. A Streptococcus sanguis was isolated. The clinical response to antibiotics was poor, with a slow and inexerable progression, leading to possible corneal regrafting.