Procedure for designing a progressive ophthalmic lens and corresponding lens

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.

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.

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.

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.

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.

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.