IP Library Granted Patent US 10,247,964
Granted Patent B2
US 10,247,964 · App. 14/385,028 · Granted Apr 2, 2019

Lens for correction of myopic refractive error

Inventors: Padmaja Rajagopal Sankaridurg (Sydney, AU); Cathleen Fedtke (Sydney, AU); Leslie Alan Donovan (Sydney, AU); Earl Leo Smith, III (Houston, TX); Arthur Ho (Sydney, AU); Brien Anthony Holden (Sydney, AU)
Assignee: Brien Holden Vision Institute
G02C7/066G02C7/027G02C7/043G02C7/045G02C7/06G02C2202/24
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Quick Facts
Patent No.
US 10,247,964
App. No.
14/385,028
Granted
Apr 2, 2019
Kind
B2
Abstract

An ophthalmic lens element includes an upper distance viewing zone and a lower near viewing zone. The upper distance viewing zone includes a central region with a first refractive power for clear distance vision and peripheral regions that are relatively positive in power compared to the first refractive power. The lower near viewing zone has a central region that is relatively positive in power compared to the first refractive power to account for accommodative lag. The powers of the peripheral regions of the lower near viewing zone are one of: i) equal to the power of the central region of the lower near viewing zone, ii) relatively positive in comparison to the power of the central region of the lower near viewing zone.

Claims (41)

1. An ophthalmic lens for use in front of an eye of a recipient, the ophthalmic lens comprising in an optic zone:

a first region including a distance point corresponding to the expected location through which the optical axis of the eye extends through the ophthalmic lens element when the recipient is looking straight ahead at a distant object;

a second region located laterally to one side of the distance point;

a third region located laterally to the other side of the distance point;

a fourth region located below the first region;

a fifth region located laterally to one side of the fourth region; and

a sixth region located laterally to the other side of the fourth region;

wherein the ophthalmic lens has a first refractive power at the distance point within the first region, a second refractive ADD power in the second region, a third refractive ADD power in the third region, a fourth refractive ADD power in the fourth region, a fifth refractive ADD power in the fifth region, and a sixth refractive ADD power in the sixth region;

wherein the second, third and fourth refractive ADD powers are greater than the first refractive power; and

wherein the fifth and sixth refractive ADD powers are greater than the fourth refractive power and the region five or region six refractive ADD power is less than the region two or region three refractive ADD power; and

wherein the ophthalmic lens is in a configuration such that when the eye moves between looking ahead and downwards the lens remains in a fixed or relatively fixed location and orientation relative to the eye.

2. The lens of claim 1 , wherein each of the first, second, third, fourth, fifth and sixth regions occupy at least one tenth of the area of the optic zone of the ophthalmic lens.

3. The lens of claim 1 , wherein the second and third refractive powers comprise an ADD power relative to the first refractive power of between 0.25 D and 4.0 D inclusive.

4. The lens of claim 3 , wherein the ADD powers of the fifth and sixth regions are half or less than half of the ADD powers of the second and third regions.

5. The lens of claim 1 , wherein the fourth refractive power comprises an ADD power relative to the first refractive power of between 1.0 D to 2.5 D.

6. The lens of claim 1 , wherein:

the second and third refractive powers each comprise an ADD power of at least 2.0 D relative to the first refractive power; and

the ADD powers of the fifth and sixth regions relative to the fourth refractive power are each between 1.00 D and 2.00 D (inclusive) less than the ADD power of the second and third regions relative to the first refractive power respectively.

7. The lens of claim 1 , wherein the second and third refractive powers increase towards convergence with the fifth and sixth refractive powers with increasing field angle.

8. The lens of claim 1 , wherein the first region extends from the distance point towards an upper periphery of the lens and has a substantially uniform refractive power.

9. The lens of claim 8 , wherein the first region includes, at locations above the distance point and above the second and third regions, a refractive power having ADD power relative to the first refractive power.

10. The lens of claim 1 , wherein the first region includes a portion located above the second and third regions.

11. The lens of claim 1 configured to have a power profile that progressively transitions between the refractive power of the first region and the refractive power of the fourth region.

12. The lens of claim 1 configured to have a power profile that progressively transitions between the refractive power of the first region and the refractive power of the second and third regions.

13. The lens of claim 1 , wherein the fourth region has a substantially constant refractive power across its area.

14. The lens of claim 1 , wherein the refractive powers of the fourth, fifth and sixth regions are substantially the same and substantially uniform across the fourth, fifth and sixth regions.

15. The lens of claim 1 , wherein the lens is a spectacle lens.

16. The lens of claim 1 , wherein the lens is a translating contact lens.

17. A method of manufacturing an ophthalmic lens for use in front of an eye comprising:

forming a lens base with an optic zone;

wherein said forming includes shaping the lens to have six regions in the optic zone so that:

a first region includes a distance point located to be substantially aligned with an expected location of an optical axis of the eye during ahead distance vision;

a second region is located laterally to one side of the distance point;

a third region is located laterally to another side of the distance point;

a fourth region is located below the first region;

a fifth region is located laterally to one side of the fourth region; and

a sixth region located laterally to another side of the fourth region;

wherein said forming includes shaping the lens so that each of the six regions has a refractive power so that:

the ophthalmic lens has a first refractive power at the distance point within the first region, a second refractive ADD power in the second region, a third refractive ADD power in the third region, a fourth refractive ADD power in the fourth region, a fifth refractive ADD power in the fifth region, and a sixth refractive ADD power in the sixth region;

the second, third and fourth refractive ADD powers are greater than the first refractive power; and

the fifth and sixth refractive ADD powers are greater than the fourth refractive power and the region five or region six refractive ADD power is less than the region two or region three refractive ADD power.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 17, 2015
From: SANKARIDURG, PADMAJA RAJAGOPAL; FEDTKE, CATHLEEN; DONOVAN, LESLIE ALAN; SMITH, EARL LEO; HO, ARTHUR; HOLDEN, BRIEN ANTHONY
To: BRIEN HOLDEN VISION INSTITUTE
Reel/Frame 035184/0432 →
Priority Claims (1)
AU 2012901026 · Mar 14, 2012 · national
Continuity (1)
Related Publication 20150331255A1 · Nov 19, 2015
Cited By (4)
US 12,416,818 US 12,468,175 US 12,693,554 US 12,699,283