Multifocal ophthalmic lens

  • US 6,186,625 B1
  • Filed: 11/05/1998
  • Issued: 02/13/2001
  • Est. Priority Date: 06/01/1987
  • Status: Expired due to Term
First Claim
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1. A method comprising shaping first, second, third and fourth regions of a surface to provide the first region with a first vision correction power, the second region with a second vision correction power which is different from the first vision correction power to enhance vision at first and second different distances, respectively, the third region between said first and second regions to provide vision correction powers which include vision correction powers which are between the first and second vision correction powers, and the fourth region of the surface to provide vision correction powers which are between the first and second vision correction powers, said second region being between the third region and the fourth region, at least one of the third and fourth regions including progressive vision correction powers.

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