Patent ID: 8460374
Filing Date: 2013-06-11
Classification: A61B,A61F,A61P,G02C

Abstract:
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 configured to reside adjacent a first corneal layer; a posterior surface configured to reside adjacent a second corneal layer; an aperture configured to transmit along an optic axis substantially all incident visible light and a portion configured to be substantially opaque to visible light and to surround at least a portion of the aperture; and a plurality of nutrient flow paths positioned in the substantially opaque portion and extending at least partially between the anterior surface and the posterior surface, at least some of the nutrient flow paths having a hole entrance disposed on the anterior surface and a hole exit disposed on the posterior surface wherein the hole entrance and hole exit at least partially overlap to permit transmission of light, at least some of the nutrient flow paths configured to be disposed within an imaging area when the mask is implanted, the plurality of flow paths being configured to substantially eliminate diffraction patterns visible to the patient due to the transmission of visible light through the at least some of the nutrient flow paths and wherein the plurality of flow paths is configured to reduce depletion of at least one biological substance in adjacent tissue of at least one of the first corneal layer and the second corneal layer.