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High performance selective light wavelength filtering providing improved contrast sensitivity

  • US 8,360,574 B2
  • Filed: 10/31/2007
  • Issued: 01/29/2013
  • Est. Priority Date: 03/20/2006
  • Status: Active Grant
First Claim
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1. An ophthalmic system comprising:

  • an ophthalmic lens selected from the group consisting of a spectacle lens, contact lens, intra-ocular lens, corneal inlay, corneal onlay, corneal graft, and corneal tissue, anda selective light wavelength filter that blocks 5-50% of light having a wavelength in the range of 400-460 nm and transmits at least 80% of light having a wavelength in the range of 460-700 nm;

    wherein the system exhibits a yellowness index of no more than 15.

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