Myopia progression treatment
A ophthalmic lens for inhibiting progression of myopia includes a central zone and an annular zone. The annular zone includes subsurface optical elements formed via laser-induced changes in refractive index of a material forming the annular zone. The subsurface optical elements are configured to modify distribution of light to the peripheral retina of a user so as to inhibit progression of myopia.
1. A method of modifying an ophthalmic lens, the method comprising:
inducing subsurface changes in refractive index of a material forming an annular zone of an ophthalmic lens to form subsurface optical elements configured to modify distribution of light to the peripheral retina of a user so as to inhibit progression of myopia, wherein the changes in the refractive index are induced by subjecting the material to pulses of laser light.
2. The method of claim 1 , wherein the subsurface optical elements are configured to reduce asymmetry of a radial versus azimuthal contrast in the peripheral retina of the user.
3. The method of claim 1 , wherein the subsurface optical elements are configured to reduce hyperopia in the peripheral retina of the user.
4. The method of claim 1 , wherein the subsurface optical elements are configured to increase depth of focus in the peripheral retina of the user.
5. The method of claim 1 , wherein the subsurface optical elements are configured to decrease depth of focus in the peripheral retina of the user.
6. The method of claim 1 , wherein the subsurface optical elements are configured to accomplish two or more of:
reduce asymmetry of a radial versus azimuthal contrast in the peripheral retina of the user;
reduce hyperopia in the peripheral retina of the user; and
increase depth of focus in the peripheral retina of the user.
7. The method of claim 1 , wherein the subsurface optical elements are configured to accomplish two or more of:
reduce asymmetry of a radial versus azimuthal contrast in the peripheral retina of the user;
reduce hyperopia in the peripheral retina of the user; and
decrease depth of focus in the peripheral retina of the user.
8. The method of claim 1 , wherein the subsurface optical elements are configured to accomplish two or more of:
increase asymmetry of a radial versus azimuthal contrast in the peripheral retina of the user;
reduce hyperopia in the peripheral retina of the user; and
increase depth of focus in the peripheral retina of the user.
9. The method of claim 1 , wherein the subsurface optical elements are configured to accomplish two or more of:
increase asymmetry of a radial versus azimuthal contrast in the peripheral retina of the user;
reduce hyperopia in the peripheral retina of the user; and
decrease depth of focus in the peripheral retina of the user.
10. The method of claim 1 , wherein each of the pulses of laser light have a duration in a range from 10 femtoseconds to 500 femtoseconds.
11. The method of claim 10 , wherein the laser light has a wavelength of about 405 nm.
12. The method of claim 10 , wherein the laser light has a wavelength of about 810 nm.
13. The method of claim 10 , wherein the laser light has a wavelength of about 1035 nm.
14. The method of claim 13 , wherein each of the pulses of laser light have a duration in a range from 15 femtoseconds to 50 femtoseconds.
15. The method of claim 1 , further comprising measuring a radial versus azimuthal contrast of light incident on a location of the peripheral retina, and wherein the subsurface optical elements are configured to reduce asymmetry of the radial versus azimuthal contrast of the light incident on the location of the peripheral retina.
16. The method of claim 1 , further comprising measuring hyperopia for a location of the peripheral retina, and wherein the subsurface optical elements are configured to reduce hyperopia at the location of the peripheral retina.
17. The method of claim 1 , wherein the annular zone comprises two or more annular portions, and wherein the subsurface optical elements in each of the two or more annular portions are configured to:
reduce asymmetry of a radial versus azimuthal contrast in the peripheral retina of the user; and/or
reduce hyperopia in the peripheral retina of the user.
18. The method of claim 17 , wherein the subsurface optical elements in each of the two or more annular portions are configured to increase depth of focus in the peripheral retina of the user.
19. The method of claim 17 , wherein the subsurface optical elements in each of the two or more annular portions are configured to decrease depth of focus in the peripheral retina of the user.
20. The method of claim 1 , wherein the ophthalmic lens is a spectacle lens.
21. The method of claim 1 , wherein the ophthalmic lens is a cornea.
22. The method of claim 1 , wherein the ophthalmic lens is a native lens of an eye.
23. The method of claim 1 , wherein the ophthalmic lens is an intraocular lens.