A 4.5 mm. penetrating keratoplasty for leucoma adherens of 4.5 mm. or less.

The aim of the present study is to determine the best size and type of corneal graft (lamellar or penetrating, as judged by the incidence of postoperative complications) for use in cases of central or peripheral leucoma adherens measuring 4-5 mm. or less. Penetrating grafts smaller than 4 mm. rarely remain transparent and those above 7 mm. also often become opaque and may be complicated by glaucoma (Stallard, I965). In applying penetrating grafts of less than 4 mm., it is difficult to handle the direct sutures and to allow for peripheral opacification where the graft joins its bed.