# US 10,869,752 B2 · Mask for increasing depth of focus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,869,752 B2 - Document ID: US10869752B2 - Status: Granted - Kind: B2 - Application number: 14/841,249 - Filed: 2015-08-31 - Published: 2015-12-24 - Granted: 2020-12-22 - Earliest claimed: 2003-05-28 - Assignees: AcuFocus, Inc. - Applicants: AcuFocus, Inc. - Inventors: Bruce A. Christie; Thomas A. Silvestrini; Kevin F. Hahnen - Web page: https://patentgrep.com/patent/US10869752B2 ## CPC - A61F 2/15: {Implant having one or more holes, e.g. for nutrient transport, for facilitating handling} - A61B 3/152: {for aligning} - A61F 2/14: Eye parts, e.g. lenses or corneal implants; Artificial eyes - A61F 2/145: {Corneal inlays, onlays, or lenses for refractive correction} - A61F 2/147: {Implants to be inserted in the stroma for refractive correction, e.g. ring-like implants} - A61F 2/1601: {Lens body having features to facilitate aqueous fluid flow across the intraocular lens, e.g. for pressure equalization or nutrient delivery} - A61F 9/007: Methods or devices for eye surgery - A61P 27/02: Ophthalmic agents - G02C 7/04: Contact lenses for the eyes (disinfection or sterilisation of contact lenses A61L12/00) - G02C 7/046: {Contact lenses having an iris pattern} - G02C 7/165: {with stenopaeic apertures} - A61F 2002/1689: {having plate-haptics} - A61F 2002/1696: {Having structure for blocking or reducing amount of light transmitted, e.g. glare reduction} - A61F 2002/1699: {Additional features not otherwise provided for} - A61F 2250/0023: differing in porosity - A61F 2250/0067: Means for introducing or releasing pharmaceutical products into the body - A61F 2250/0098: radio-opaque, e.g. radio-opaque markers - G02C 2202/04: Lenses comprising decentered structures - A61F: FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS (dental prosthetics A61C) - A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D) - A61P: SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS - G02C: SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES (trial frames for testing the eyes A61B3/04; goggles or eyeshields not having the same features as spectacles A61F9/00) ## Abstract A mask configured to be implanted in a cornea of a patient to increase the depth of focus of the patient includes an anterior surface, a posterior surface, and a plurality of holes. The anterior surface is configured to reside adjacent a first corneal layer. The posterior surface is configured to reside adjacent a second corneal layer. The plurality of holes extends at least partially between the anterior surface and the posterior surface. The holes of the plurality of holes are configured to substantially eliminate visible diffraction patterns. ## Claims ### Claim 1 A mask comprising: a body comprising an anterior surface, a posterior surface, and an outer zone; and an aperture configured to transmit light therethrough, the aperture sized to increase depth of focus sufficiently to treat presbyopia in a human patient; wherein the body is adapted to substantially prevent transmission of light therethrough, the outer zone surrounding the aperture and having a plurality of holes disposed therein, the outer zone comprising a polymeric portion prior to implantation, the polymeric portion having the plurality of holes, wherein hole size is varied to reduce the tendency of the holes to produce visible diffraction patterns, wherein every hole in the outer zone and radially outward of the aperture comprises a hole entrance on the anterior surface that at least partially overlaps a hole exit of the same hole on the posterior surface, wherein every hole in the outer zone and radially outward of the aperture is configured to transmit substantially less light than the aperture; and wherein at least some of the plurality of holes are disposed within the imaging area of the patient's eye when the mask is implanted. ### Claim 2 (depends on 1) The mask of claim 1, wherein hole shape and orientation is varied. ### Claim 3 (depends on 1) The mask of claim 1, wherein the aperture is a centrally located through hole. ### Claim 4 (depends on 1) The mask of claim 1, wherein the body comprises a constant thickness. ### Claim 5 (depends on 1) The mask of claim 1, wherein the aperture has a diameter of less than 2.2 mm. ### Claim 6 (depends on 1) An ophthalmic device comprising: the mask of claim 1; and an intraocular lens, the mask embodied in the intraocular lens. ### Claim 7 (depends on 1) The mask of claim 1, wherein the aperture is off-center relative to a central axis of the mask. ### Claim 8 (depends on 1) The mask of claim 1, wherein a thickness measured from the anterior surface to the posterior surface is less than 20 microns. ### Claim 9 A mask configured to increase depth of focus in the eye of a human patient, the mask comprising: an anterior surface; a posterior surface; a single aperture configured to transmit light therethrough, the aperture sized to increase depth of focus sufficiently to treat presbyopia in the human patient, the aperture having a diameter of less than 2.2 mm; a substantially opaque portion comprising a polymeric material prior to implantation, the substantially opaque portion extending at least partially between the aperture and an outer periphery of the mask, the substantially opaque portion comprising: a first plurality of holes having a first minimum spacing from a nearest neighboring hole; and a second plurality of holes having a second minimum spacing from a nearest neighboring hole that is different than the first minimum spacing; wherein the different minimum spacing of the first plurality of holes and the second plurality of holes spreads diffracted visible light that passes through the holes substantially uniformly across an image observable to a patient to substantially eliminate observable spots, and wherein every hole in the substantially opaque portion and radially outward of the aperture comprises a hole entrance on the anterior surface, a hole exit on the posterior surface, and an axis extending through the hole entrance and the hole exit, the axis being parallel to a central axis extending through the aperture; and wherein a thickness measured from the anterior surface to the posterior surface is less than 20 microns. ### Claim 10 (depends on 9) The mask of claim 9, wherein the mask comprises a constant thickness. ### Claim 11 (depends on 9) The mask of claim 9, wherein the tendency of the holes to produce visible diffraction patterns is reduced by having a plurality of the holes having a first hole size, shape, or spacing and at least another plurality of the holes with a second hole size, shape, or spacing different from the first hole size, shape, or spacing. ### Claim 12 (depends on 9) An ophthalmic device comprising: the mask of claim 9; and an intraocular lens, the mask embodied in the intraocular lens. ### Claim 13 (depends on 9) The ophthalmic device of claim 9, wherein the aperture is off-center relative to a central axis of the mask. ### Claim 14 (depends on 9) The ophthalmic device of claim 9, wherein every hole in the substantially opaque portion and radially outward of the aperture is substantially smaller than the single aperture.