Lenses, devices and methods for ocular refractive error
A lens for an eye having an optical axis and an aberration profile along its optical axis, the aberration profile having a focal distance and including higher order aberrations having at least one of a primary spherical aberration component and a secondary spherical aberration component. The aberration profile may provide, for a model eye with no aberrations and an on-axis length equal to the focal distance: a peak, first retinal image quality (RIQ) within a through focus range that remains at or above a second RIQ over the through focus range that includes said focal distance, where the first RIQ is at least 0.35, the second RIQ is at least 0.1 and the through focus range is at least 1.8 Diopters.
1. A lens for an eye, the lens having an optical axis, a dioptric power and an aberration profile about the lens' optical axis, the aberration profile comprising:
higher order aberrations having at least one of a primary spherical aberration component (C(4,0)) and a secondary spherical aberration component (C(6,0)); and at least two additional spherical aberration terms selected from the group of C(8,0) to C(20,0);
the aberration profile of the lens, when the lens is measured on a model eye, results in a retinal image quality of at least 0.3 at the retina of the model eye and a gradient of through focus retinal image quality at the retina of the model eye decreasing in the direction posterior to the retina of the model eye;
wherein the model eye has a refractive error matching the dioptric power of the lens and the model eye has no higher order aberrations; and
wherein the retinal image quality is a visual Strehl ratio measured along the lens' optical axis for at least one pupil diameter of the model eye in a range of 3 mm to 6 mm, defined over a spatial frequency range of 0 to 30 cycles/degree inclusive and at a wavelength selected from within the range of 540 nm to 590 nm inclusive.
2. The lens of claim 1 , wherein the at least two additional spherical aberration terms are selected from the group of C(10,0) to C(20,0).
3. The lens of claim 2 , wherein the retinal image quality is at least 0.35, 0.4 or 0.5 at the retina of the model eye.
4. The lens of claim 3 , wherein the through focus slope is an average slope over a horizontal field of at least −20 degrees to +20 degrees that degrades in a direction of eye growth.
5. The lens of claim 4 , wherein the at least one pupil diameter is all pupil diameters in the range of 3 mm to 5 mm.
6. The lens of claim 2 , wherein the through focus slope is an average slope over a horizontal field of at least −20 degrees to +20 degrees that degrades in a direction of eye growth.
7. The lens of claim 2 , wherein the at least one pupil diameter is all pupil diameters in the range of 3 mm to 5 mm.
8. The lens of claim 1 , wherein the at least two additional spherical aberration terms are selected from the group of C(12,0) to C(20,0).
9. The lens of claim 1 , wherein the aberration profile comprises at least three additional spherical aberration terms selected from the group of C(8,0) to C(20,0).
10. The lens of claim 9 , wherein the retinal image quality is at least 0.35, 0.4 or 0.5 at the retina of the model eye.
11. The lens of claim 10 , wherein the through focus slope is an average slope over a horizontal field of at least −20 degrees to +20 degrees that degrades in a direction of eye growth.
12. The lens of claim 11 , wherein the at least one pupil diameter is all pupil diameters in the range of 3 mm to 5 mm.
13. The lens of claim 9 , wherein the at least one pupil diameter is all pupil diameters in the range of 3 mm to 5 mm.
14. The lens of claim 9 , wherein the through focus slope is an average slope over a horizontal field of at least −20 degrees to +20 degrees that degrades in a direction of eye growth.
15. The lens of claim 1 , wherein the aberration profile comprises at least four additional spherical aberration terms selected from the group of C(8,0) to C(20,0).
16. The lens of claim 15 , wherein the retinal image quality is at least 0.35, 0.4 or 0.5 at the retina of the model eye.
17. The lens of claim 15 , wherein the at least one pupil diameter is all pupil diameters in the range of 3 mm to 5 mm.
18. The lens of claim 15 , wherein the through focus slope is an average slope over a horizontal field of at least −20 degrees to +20 degrees that degrades in a direction of eye growth.
19. The lens of claim 1 , wherein the retinal image quality is at least 0.35, 0.4 or 0.5 at the retina of the model eye.
20. The lens of claim 19 , wherein the at least one pupil diameter is all pupil diameters in the range of 3 mm to 5 mm.
21. The lens of claim 20 , wherein the through focus slope is an average slope over a horizontal field of at least −20 degrees to +20 degrees that degrades in a direction of eye growth.
22. The lens of claim 1 , wherein the at least one pupil diameter is all pupil diameters in the range of 3 mm to 5 mm.
23. The lens of claim 1 , wherein the through focus slope is an average slope over a horizontal field of at least −20 degrees to +20 degrees that degrades in a direction of eye growth.