title: Refractive results of hyperopic hydrogel intracorneal lenses in primate eyes.
abstract: Hyperopic hydrogel intracorneal lenses were successfully implanted into 27 of 33 primate eyes. All eyes were evaluated preoperatively and postoperatively at monthly intervals for clinical appearance and refractive alteration. In a preliminary surgical series, several factors, such as tight sutures and implant design, resulted in a poor refractive yield. The final surgical series used a microkeratome with a pediatric microkeratome ring for smooth interface cuts, interrupted suturing with sufficient tension to align the wound without compression, a suture through the lens to prevent its dislocation, and intraoperative keratometry to reduce postoperative cylinder. The predicted vs measured refractive alteration for a range of 6 to 20 diopters had a correlation coefficient of .95. Keratometry changes correlated to the refractive changes with a coefficient of .97 but understand the change in refraction created by the surgery.
authors.affiliation: Department of Ophthalmology, Emory University, Atlanta, GA 30322.
authors.forename: B E
authors.initials: BE
authors.lastname: McCarey
authors.forename: M B
authors.initials: MB
authors.lastname: McDonald
authors.forename: G
authors.initials: G
authors.lastname: van Rij
authors.forename: B
authors.initials: B
authors.lastname: Salmeron
authors.forename: D K
authors.initials: DK
authors.lastname: Pettit
authors.forename: P M
authors.initials: PM
authors.lastname: Knight
mesh_terms: D000818:Animals; D002521:Cercopithecus; D003315:Cornea / Q000473:pathology; D003936:Diagnosis, Computer-Assisted; D005069:Evaluation Studies as Topic; D005260:Female; D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D007910:Lenses, Intraocular; D008253:Macaca mulatta; D008297:Male; D011092:Polyethylene Glycols; D011184:Postoperative Period; D012029:Refraction, Ocular
chemical_list: D020136:Hydrogel, Polyethylene Glycol Dimethacrylate; D011092:Polyethylene Glycols