The triple procedure: cataract extraction in a different setting.

This article compares and contrasts ordinary cataract extraction, including lens implantation, with cataract extraction and lens implantation in eyes also undergoing penetrating keratoplasty. Variations in cataract extraction technique which are necessary when a keratoplasty is added are described, and differences in an important complication which occurs in both settings, cystoid macular edema, are evaluated.