We present a novel case report of Abiotrophia adiacens-related infectious crystalline keratopathy (ICK) following penetrating keratoplasty (PK). A 52-year-old man with keratoconus presented with decreased vision 6 weeks after his third PK, having previously had uncomplicated surgery. His immediate postoperative course was uneventful. Topical corticosteroids (prednefrin forte, 0.1%) and chloramphenicol eye-drops were initially applied four times daily, tapering to twice daily. Visual acuity was 6/60 (best-corrected visual acuity 6/36) in his affected eye and 6/36 in his unaffected eye. The slit-lamp examination revealed a focal area of non-suppurative, intrastromal white opacities exhibiting a branching, cracked-glass appearance; this was evident inferiorly, without any epithelial defect. No loose or broken sutures were noted.

Provisional microscopic examination of corneal scrapings, performed for …