title: Piggyback minus-power lens implantation in keratoconus.
abstract: A 53-year-old man with keratoconus and an axial length of 32.59 mm had cataract extraction by phacoemulsification. The Holladay II formula called for -14.00 diopters (D) of power. Two negative-power intraocular lenses (IOLs) were implanted to optimize visual results. A 1 day postoperative refraction of +1.50 D sphere necessitated an exchange of the anterior IOL. Six days after the exchange, the patient had a refraction of -1.25 D sphere and best corrected visual acuity of 20/50.
authors.affiliation: St. Luke's Cataract & Laser Institute, Tarpon Springs, Florida 34688, USA.
authors.forename: J P
authors.initials: JP
authors.lastname: Gills
mesh_terms: D005123:Eye / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D006801:Humans; D007640:Keratoconus / Q000628:therapy*; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D055095:Optics and Photonics; D018918:Phacoemulsification; D016896:Treatment Outcome; D014463:Ultrasonography; D014792:Visual Acuity