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Multifocal lens having a progressive optical power region and a discontinuity

  • US 7,883,206 B2
  • Filed: 12/25/2007
  • Issued: 02/08/2011
  • Est. Priority Date: 03/07/2007
  • Status: Active Grant
First Claim
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1. An ophthalmic lens having a fitting point, comprising:

  • a far distance zone;

    a mostly spherical power region for providing additive optical power to the far distance zone for providing an intermediate distance zone of the lens;

    a discontinuity, as viewed through the lens, located between the far distance zone and said mostly spherical power region;

    a progressive optical power region that overlaps as viewed through the lens at least a portion of said mostly spherical power region for providing additive optical power to said mostly spherical power region for providing a near distance zone of the lens, anda plateau of optical power located in a portion of said progressive optical power region for providing vertical stability of vision in said intermediate distance zone;

    wherein said plateau of optical power has a vertical length of approximately 1 millimeter to 6 millimeters.

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