RT Journal Article SR Electronic T1 Epithelial cyst of the iris following penetrating keratoplasty. JF British Journal of Ophthalmology JO Br J Ophthalmol FD BMJ Publishing Group Ltd. SP 440 OP 445 DO 10.1136/bjo.64.6.440 VO 64 IS 6 A1 S A Boruchoff A1 K R Kenyon A1 G N Foulks A1 W R Green YR 1980 UL http://bjo.bmj.com/content/64/6/440.abstract AB In a 35-year-old patient with keratoconus a cyst of the iris was first observed 22 months after routine penetrating keratoplasty. The lesion was completely excised and shown by light and transmission electron microscopy to be composed of conjunctival epithelium organised as a single large cyst containing serous material and occasional free epithelial cells. The management of epithelial implantation cysts is discussed. When indicated, complete surgical excision without ruputure is preferred to avoid possible intraocular dissemination of viable epithelial cells that might result in further complications.