Multifocal ophthalmic lens

  • US 5,166,711 A
  • Filed: 06/27/1990
  • Issued: 11/24/1992
  • Est. Priority Date: 06/01/1987
  • Status: Expired due to Term
First Claim
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1. A multifocal ophthalmic lens for providing variable vision correction power, said lens being adapted for implantation in an eye or to be carried on a surface of the eye, said lens having a central zone providing a predetermined vision correction power and a plurality of annular regions circumscribing the central zone, a first of the annular regions having progressive vision correction powers which vary progressively in a radial outward direction from said predetermined vision correction power at said central zone to one of near and far vision correction powers, said one vision correction power being different from said predetermined vision correction power, a second of the annular regions having the other of said near and far vision correction powers and a third of said annular regions having progressive vision correction powers varying progressively between the far and near vision correction powers, said third region circumscribing the first region and the second region circumscribing said third region.

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