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Mask configured to maintain nutrient transport without producing visible diffraction patterns

  • US 20060271179A1
  • Filed: 05/03/2006
  • Published: 11/30/2006
  • Est. Priority Date: 05/28/2003
  • Status: Abandoned Application
First Claim
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1. A mask configured to be implanted in a cornea of a patient to increase the depth of focus of the patient, the mask comprising:

  • an anterior surface extending from an outer periphery and being configured to reside adjacent a first corneal layer;

    a posterior surface extending from the outer periphery and being configured to reside adjacent a second corneal layer; and

    an aperture located within the outer periphery;

    a non-transmissive portion disposed about the aperture; and

    a plurality of nutrient flow paths located in the non-transmissive portion and extending between the anterior surface and the posterior surface, the nutrient flow paths configured to reduce nutrient depletion due to the presence of the mask in at least one of the first corneal layer and the second corneal layer;

    wherein non-transmissive portion prevents transmission of between about 85 and about 100 percent of incident light.

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