Filamentary keratitis following penetrating keratoplasty

Filamentary keratitis is a problem associated with a wide variety of ocular conditions. Of 114 patients receiving penetrating keratoplasty, 31 (27.2%) were noted to have filaments. Those patients receiving transplants for keratoconus were noted to have the highest incidence (12 of 31, 39%), while transplants following herpetic scars were not associated with filaments (0 of 11) in this series. Suturing technique or relation of donor button-to-graft site were not apparently important factors in the development of postoperative filamentary keratitis.