# US 8,770,748 B2 · Procedure for designing a progressive ophthalmic lens and corresponding lens > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,770,748 B2 - Document ID: US8770748B2 - Status: Granted - Kind: B2 - Application number: 13/373,240 - Filed: 2011-11-09 - Published: 2013-05-09 - Granted: 2014-07-08 - Earliest claimed: 2011-11-09 - Assignees: Indo Internacional, S.A. - Applicants: Juan Carlos Dürsteler López; Javier Vegas Caballero; Manuel Espinola Estepa; Sara Chamadoira-Hermida; Glòria Casanellas Peñalver - Inventors: Juan Carlos Dürsteler López; Javier Vegas Caballero; Manuel Espinola Estepa; Sara Chamadoira-Hermida; Glòria Casanellas Peñalver - Web page: https://patentgrep.com/patent/US8770748B2 ## CPC - G02C 7/066: {Shape, location or size of the viewing zones} - G02C 7/024: {Methods of designing ophthalmic lenses} - G02C 7/027: {considering wearer's parameters} - G02C 7/063: {Shape of the progressive surface} - 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 Method for designing a progressive ophthalmic lens with a top area between a vision area and a top edge of the lens, and a bottom area between a near vision area and a bottom edge of the lens. Selecting a predesigned lens, lateral aberrations which are redistributed around an outer area, defined according to a frame chosen by the lens user, so that at least on one of intersections between top, bottom and outer areas, the aberrations adopt values higher than those in the predesigned lens. ## Claims ### Claim 1 A progressive ophthalmic lens, comprising: a far vision area, a near vision area and a passage that extends between said far vision area and said near vision area, wherein between said far vision area and a top edge of said progressive lens there extends a top area and between said near vision area and a bottom edge of said lens there extends a bottom area; a useful area, defined according to a perimeter of a preselected frame, and an area between the perimeter and an outer area outside the useful area, wherein said useful area divides said top area into a top outer area and a top inner area and said bottom area into a bottom outer area and a bottom inner area, and wherein in at least one of said top outer and bottom outer areas there is an arch of a contour line of a lens power progression associated astigmatism of value 0.25 Dp that extends along the corresponding top outer and bottom outer areas between two points of the frame perimeter. ### Claim 2 (depends on 1) Lens according to claim 1, wherein the top inner and bottom inner areas have a lens power progression associated astigmatism less than 0.12. ### Claim 3 (depends on 1) Lens according to claim 1, wherein the top inner and bottom inner areas have a lens power progression associated astigmatism less than 0.06. ### Claim 4 Method for designing a progressive ophthalmic lens, where said lens includes a far vision area, a near vision area and a passage which extends between said far vision area and said near vision area, where between said far vision area and a top edge of said lens there extends a top area and between said near vision area and a bottom edge of said lens there extends a bottom area, comprising the following steps: taking a user's physiological and prescription data, selecting a frame, obtaining the frame's perimeter, optimizing the lens, by: calculating objective power and prescription astigmatism values for the far vision area, the near vision area and the passage, according to the user's physiological and prescription data, generating or selecting a predesigned lens having certain lateral aberration values, in the top and bottom areas, defining a useful area according to the perimeter of the frame, and an outer area outside the useful area, positioning the useful area in the lens where the useful area divides the top area into a top outer area and a top inner area, and the bottom area into a bottom outer area and a bottom inner area, redistributing at least one of the lateral aberrations on the lens around the outer area allowing, at least in one of the top outer and bottom outer areas, values to be adopted that are higher than those on the predesigned lens; and taking data of a position of the lens with respect to the user's eye based on the selected frame. ### Claim 5 (depends on 4) Method according to claim 4, wherein the calculating is done according to the user's physiological and prescription details and the position data. ### Claim 6 Method for designing a progressive ophthalmic lens, where said lens includes a far vision area, a near vision area and a passage which extends between said far vision area and said near vision area, where between said far vision area and a top edge of said lens there extends a top area and between said near vision area and a bottom edge of said lens there extends a bottom area, comprising the following steps: taking a user's physiological and prescription data, selecting a frame, obtaining the frame's perimeter, optimizing the lens, by: calculating objective power and prescription astigmatism values for the far vision area, the near vision area and the passage, according to the user's physiological and prescription data, generating or selecting a predesigned lens having certain lateral aberration values, in the top and bottom areas, defining a useful area according to the perimeter of the frame, and an outer area outside the useful area, positioning the useful area in the lens where the useful area divides the top area into a top outer area and a top inner area, and the bottom area into a bottom outer area and a bottom inner area, and redistributing at least one of the lateral aberrations on the lens around the outer area allowing, at least in one of the top outer and bottom outer areas, values to be adopted that are higher than those on the predesigned lens, wherein the redistributing is done by establishing a non null objective value of said lateral aberration for at least one of said top outer and bottom outer areas. ### Claim 7 (depends on 6) Method according to claim 6, wherein said lateral aberration is a lens power progression associated astigmatism. ### Claim 8 (depends on 6) Method according to claim 6, wherein an objective value of said lateral aberration is between 30% and 70% of a maximum value of said lateral aberration present in said useful area. ### Claim 9 (depends on 8) Method according to claim 8, wherein an objective value of said lateral aberration is between 40% and 60% of the maximum value of said lateral aberration present in said useful area. ### Claim 10 Method for designing a progressive ophthalmic lens, where said lens includes a far vision area, a near vision area and a passage which extends between said far vision area and said near vision area, where between said far vision area and a top edge of said lens there extends a top area and between said near vision area and a bottom edge of said lens there extends a bottom area, comprising the following steps: taking a user's physiological and prescription data, selecting a frame, obtaining the frame's perimeter, optimizing the lens, by: calculating objective power and prescription astigmatism values for the far vision area, the near vision area and the passage, according to the user's physiological and prescription data, generating or selecting a predesigned lens having certain lateral aberration values, in the top and bottom areas, defining a useful area according to the perimeter of the frame, and an outer area outside the useful area, positioning the useful area in the lens where the useful area divides the top area into a top outer area and a top inner area, and the bottom area into a bottom outer area and a bottom inner area, redistributing at least one of the lateral aberrations on the lens around the outer area allowing, at least in one of the top outer and bottom outer areas, values to be adopted that are higher than those on the predesigned lens; and wherein said optimizing further includes establishing initial parameters including objective power values, objective values of said lateral aberration, power and lateral aberration tolerance values and a weight function; and wherein said optimizing is carried out via a merit function, where, for said outer area, tolerances of said lateral aberration are established that are greater than tolerances of said lateral aberration for said useful area. ### Claim 11 (depends on 10) Method according to claim 10, wherein for said outer area, smaller weight function values are established than for said useful area. ### Claim 12 (depends on 11) Method according to claim 11, wherein, for said outer area, normalized values are established smaller than 0.2. ### Claim 13 (depends on 12) Method according to claim 12, wherein, for said outer area, normalized values are established less than 0.1. ### Claim 14 Method for designing a progressive ophthalmic lens, where said lens includes a far vision area, a near vision area and a passage which extends between said far vision area and said near vision area, where between said far vision area and a top edge of said lens there extends a top area and between said near vision area and a bottom edge of said lens there extends a bottom area, comprising the following steps: taking a user's physiological and prescription data, selecting a frame, obtaining the frame's perimeter, optimizing the lens, by: calculating objective power and prescription astigmatism values for the far vision area, the near vision area and the passage, according to the user's physiological and prescription data, generating or selecting a predesigned lens having certain lateral aberration values, in the top and bottom areas, defining a useful area according to the perimeter of the frame, and an outer area outside the useful area, positioning the useful area in the lens where the useful area divides the top area into a top outer area and a top inner area, and the bottom area into a bottom outer area and a bottom inner area, and redistributing at least one of the lateral aberrations on the lens around the outer area allowing, at least in one of the top outer and bottom outer areas, values to be adopted that are higher than those on the predesigned lens, wherein the optimizing includes shifting at least one of nasal and temporal maximums of progression associated astigmatism present in said predesigned lens by moving said at least one nasal and temporal maximums away from said far vision and near vision areas and said passage, and wherein, at least one of said nasal and temporal maximums is shifted until said at least one nasal and temporal maximums substantially coincides with said perimeter. ### Claim 15 (depends on 14) Method according to claim 14, wherein nasal and temporal benchmarks are defined, and at least one of said nasal and temporal maximums is shifted until said at least one of said nasal and temporal maximums substantially coincides with a respective nasal or temporal benchmark. ### Claim 16 Method for designing a progressive ophthalmic lens, where said lens includes a far vision area, a near vision area and a passage which extends between said far vision area and said near vision area, where between said far vision area and a top edge of said lens there extends a top area and between said near vision area and a bottom edge of said lens there extends a bottom area, comprising the following steps: taking a user's physiological and prescription data, selecting a frame, obtaining the frame's perimeter, optimizing the lens, by: calculating objective power and prescription astigmatism values for the far vision area, the near vision area and the passage, according to the user's physiological and prescription data, generating or selecting a predesigned lens having certain lateral aberration values, in the top and bottom areas, defining a useful area according to the perimeter of the frame, and an outer area outside the useful area, positioning the useful area in the lens where the useful area divides the top area into a top outer area and a top inner area, and the bottom area into a bottom outer area and a bottom inner area, redistributing at least one of the lateral aberrations on the lens around the outer area allowing, at least in one of the top outer and bottom outer areas, values to be adopted that are higher than those on the predesigned lens; and defining an ellipse of vision. ### Claim 17 Finished progressive ophthalmic lens, comprising: a far vision area, a near vision area and a passage that extends between said far vision area and said near vision area, wherein between said far vision area and a top edge of said lens there extends a top area and between said near vision area and a bottom edge of said lens there extends a bottom area; a useful area, defined according to a perimeter of a preselected frame, and an area between the perimeter and an outer area outside the useful area, where said useful area divides said top area into a top outer area and a top inner area and said bottom area into a bottom outer area and a bottom inner area, wherein at least one of said top outer and bottom outer areas there is a lens power progression associated astigmatism greater than 0.25 Dp, wherein the top inner and bottom inner areas have a lens power progression associated astigmatism less than 0.12. ### Claim 18 (depends on 17) The lens according to claim 17, wherein said top inner and bottom inner areas have a lens power progression associated astigmatism less than 0.06.