Infection with Micrococcus tetragenus as a complication of penetrating keratoplasty.

A male medical student, aged 22, had bilateral keratoconus which had been successfully treated by Mr. H. Treissman with contact lenses for 7 years. Recently the left eye had become intolerant to the contact glass with recurrent corneal ulceration and scar formation. The patient was referred to Mr. B. W. Rycroft for consideration of keratoplasty. History.-There were no points of relevant ophthalmic interest in the general health or family history. There was no evidence of closed focal sepsis and a routine radiological examination of the chest was normal.