Systems, apparatus, and methods for regulating refractive error development through the modulation of peripheral distortion
In general, one aspect disclosed features a lens comprising: a central zone having an optical center corresponding to the visual axis of an eye of a patient; and a peripheral zone peripheral to the central zone and comprising: a first zone having a first thickness, and a second zone having a second thickness, wherein: the second thickness varies from the first thickness, and a distance from the second zone to the optical center of the central zone is selected to generate pincushion distortion or barrel distortion in the eye of the patient.
1 . A lens comprising:
a central zone having an optical center corresponding to the visual axis of an eye of a patient; and
a peripheral zone peripheral to the central zone and the peripheral zone comprising:
a first zone having a first thickness, and
a second zone having a second thickness and an apical knot, wherein:
the second thickness varies from the first thickness, and
a radial distance from the apical knot of the peripheral zone to the optical center of the central zone is selected to generate pincushion distortion or barrel distortion in the eye of the patient; and
the radial distance of the apical knot of the second thickness of the peripheral zone generates pincushion or barrel distortion.
2 . The lens of claim 1 , wherein the peripheral zone comprises at least one of:
a raised area on an anterior surface of the lens;
a raised area on a posterior surface of the lens;
a depressed area on an anterior surface of the lens; or
a depressed area on a posterior surface of the lens.
3 . The lens of claim 1 , wherein:
the second thickness is selected to generate peripheral defocus in the eye of the patient.
4 . The lens of claim 1 , wherein:
the lens is rotationally stabilized to allow for at least one of:
different optical powers in two or more semi-meridians;
different spherical aberration generated in two or more semi-meridians;
different peripheral defocus in two or more semi-meridians; or
different rectilinear distortion in two or more semi-meridians.
5 . The lens of claim 1 , wherein:
the radial distance of the apical knot of the peripheral zone to the center of the central zone is selected to generate different amounts of pincushion distortion or barrel distortion in the eye of the patient in two or more semi-meridians.
6 . The lens of claim 1 , wherein:
the lens has a colorant added to a material or surface of a film to alter the spectral transmission of the lens.
7 . A lens comprising:
a central zone having an optical center corresponding to the visual axis of an eye of a patient; and
a peripheral zone peripheral to the central zone and the peripheral zone comprising:
a first zone having a first index of refraction, and
a second zone having a second index of refraction and an apical knot, wherein:
the second index of refraction varies from the first index of refraction, and
a radial distance from the apical knot of the peripheral zone to the optical center of the central zone is selected to generate pincushion distortion or barrel distortion in the eye of the patient; and
the radial distance of the apical knot of the second thickness of the peripheral zone generates pincushion or barrel distortion.
8 . A method for defining a lens to be manufactured for an eye of a patient, the method comprising:
selecting a central zone having an optical center corresponding to the visual axis of an eye of the patient;
selecting a peripheral zone peripheral to the central zone; and
selecting, for the peripheral zone:
a first zone having a first thickness, and
a second zone having a second thickness and an apical knot, wherein:
the second thickness varies from the first thickness, and
a radial distance from the apical knot of the peripheral to the optical center of the central zone is selected to generate pincushion distortion or barrel distortion in the eye of the patient; and
the radial distance of the apical knot of the second thickness of the peripheral zone generates pincushion or barrel distortion.
9 . The method of claim 8 , further comprising:
selecting, for the peripheral zone, at least one of:
a raised area on an anterior surface of the lens;
a raised area on a posterior surface of the lens;
a depressed area on an anterior surface of the lens; or
a depressed area on a posterior surface of the lens.
10 . The method of claim 8 , further comprising:
rotationally stabilizing the lens to allow for at least one of:
different optical powers in two or more semi-meridians;
different spherical aberration generated in two or more semi-meridians;
different peripheral defocus in two or more semi-meridians; or
different ocular distortion in two or more semi-meridians.
11 . The method of claim 8 , further comprising:
selecting the radial distance of the apical knot of the peripheral zone to the center of the central zone to generate different amounts of pincushion distortion or barrel distortion in the eye of the patient in two or more semi-meridians.