Effect of intraocular lens optic design on posterior capsular opacification.
Secondary capsular opacification is a common complication of extracapsular cataract extraction. We have done a retrospective study of 1,040 consecutive posterior chamber implants using four optic designs. The annual incidence of capsular opacification requiring capsulotomy was calculated to see if the optic design was a possible factor. The laser ridge and laser "peg" optics each had a cumulative capsulotomy rate of over 40.0% at three years and the convex-plano optic, over 40.0% at five years. Optics of plano-convex/biconvex designs had a cumulative capsulotomy rate of 5.0% at three years and 6.5% at five years. These results strongly suggest that capsular opacification is retarded when there is broad adhesion of the lens optic to the posterior capsule.
Born
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CP
Gundersen Clinic, Department of Ophthalmology, La Crosse, Wisconsin 54601.
Ryan
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DK
D000368:Aged; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007903:Lens Capsule, Crystalline / Q000601:surgery*; D007905:Lens Diseases / Q000209:etiology* / Q000601:surgery; D007908:Lens, Crystalline / Q000601:surgery*; D007910:Lenses, Intraocular / Q000009:adverse effects*; D008297:Male; D055095:Optics and Photonics; D011474:Prosthesis Design; D012189:Retrospective Studies