INTRAOCULAR LENS THAT MATCHES AN IMAGE SURFACE TO A RETINAL SHAPE, AND METHOD OF DESIGNING SAME

• US 20140253877A1
• Filed: 03/04/2014
• Published: 09/11/2014
• Est. Priority Date: 03/11/2013
• Status: Active Grant

• Current Assignee: Johnson & Johnson Surgical Vision, Inc. (Johnson & Johnson)
• Original Assignee: Abbott Medical Optics Incorporated (Johnson & Johnson)
• Inventors: Li, Kaccie Y., Weeber, Hendrik A., Vidal, Carmen Canovas, Piers, Patricia Ann, Zhao, Huawei, Rosn, Robert
• Granted Patent: US 9,561,098 B2
• Time in Patent Office: Days
• US Class Current: 351/212
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61B 3/107 for determining the shape or measuring the curvature of the cornea
• CPC Class Codes: A61F 2/1613 having special lens configurations, e.g. multipart lenses; having particular optical properties, e.g. pseudo-accommodative lenses, lenses having aberration corrections, diffractive lenses, lenses for variably absorbing electromagnetic radiation, lenses having variable focus
• CPC Class Codes: A61F 2/1637 Correcting aberrations caused by inhomogeneities; correcting intrinsic aberrations, e.g. of the cornea, of the surface of the natural lens, aspheric, cylindrical, toric lenses
• CPC Class Codes: A61F 2/1648 Multipart lenses
• CPC Class Codes: A61F 2240/002 Designing or making customized prostheses
• CPC Class Codes: A61F 2250/0053 differing in optical properties

Abstract

An intraocular lens (IOL), system, and method having a base lens and a complementary lens selected to form a curved image surface matching a retina surface when placed in an eye'"'"'s line of sight.

Claims

1. An intraocular lens (IOL) system, comprising:

a base lens; and

a complementary lens;

wherein the base lens and complementary lens placed on a line of sight form a curved image surface that matches the retina surface of an eye in which the base lens and complementary lens are inserted.

2. The IOL of claim 1, wherein the base lens is a positive lens suitable for insertion into the posterior chamber of the eye.

3. The IOL of claim 1, wherein the complementary lens is suitable for insertion in one of the posterior chamber of the eye and the anterior chamber of the eye.

4. The IOL of claim 1, further comprising at least one strut disposed between and coupled to the base lens and the complementary lens.

5. The IOL of claim 1, wherein the base lens or the complementary lens is a surface profile disposed on or within the cornea formed by a laser.

6. A method of matching an image surface to a retina surface, comprising:

receiving a measurement of at least a shape of a retina of a subject eye;

determining a lens power that would focus light passing through the cornea and the pupil of the subject eye onto the retina surface;

determining a shape of an image surface that would be produced by the eye with an IOL having the lens power;

comparing the image surface shape to the shape of the retina surface;

selecting a base lens power, including;

in the case the image surface is flatter than the retina surface, selecting a base lens power greater than the lens power;

in the case the image surface is less flat than the retina surface, selecting a base lens power less than the lens power;

calculating a complimentary lens power equal to the lens power minus the selected base lens power; and

providing for insertion in the subject eye'"'"'s line of sight a base lens having the base lens power and a complementary lens having the complementary lens power.

7. The method of claim 6, wherein the base lens and the complementary lens are provided for insertion individually.

8. The method of claim 6, further comprising assembling a compound IOL that includes the base lens and the complementary lens, whereby the insertion of the base lens and the complementary lens is achieved by implanting the compound IOL.

9. The method of claim 8, wherein the compound IOL is assembled using components selected from a plurality of preformed base lenses and a plurality of preformed complementary lenses.

10. The method of claim 8, wherein the compound IOL is selected from a plurality of pre-formed compound IOLs.

11. The method of claim 6, further comprising selecting at least one additional optical element for the compound IOL to correct image aberration.

12. The method of claim 11, wherein the additional optical element is an aperture.

13. The method of claim 6, wherein the providing for insertion includes providing for a surgical modification of the cornea of the eye.

14. A system for specifying a plurality of intraoptical lenses that combine to form an image shape matched to a retina surface, comprising:

biometric apparatus operable to measure the dimensions and retina shape of an eye and to produce measurement data thereof;

a computing processor operable to receive the measurement data from the biometric apparatus; and

a non-transitory data storage device in data communication with the processor and storing therein information of a plurality of IOL lenses and instructions which, when executed on the processor, cause the system to;

determine a lens power of a default IOL that would focus light passing through the cornea and the pupil of the eye onto the retina according to the measurement data;

determine a shape of an image surface that would be produced by the eye with the default IOL;

compare the image surface shape to the shape of the retina;

select a base lens power, including;

in the case the image surface is flatter than the retina surface, selecting a base lens power greater than the default IOL lens power; and

in the case the image surface is less flat than the retina surface, selecting a base lens power less than the default IOL lens power;

calculating a complimentary lens power equal to the default lens power minus the selected base lens power; and

specifying a base lens having the base lens power and a complementary lens having the complementary lens power for implantation in the eye.

15. An intraocular lens (IOL) system, comprising:

a lens with an anterior side and an opposing posterior side, wherein the lens forms a curved image surface that matches the retina surface of an eye in which the lens is inserted.

16. The IOL of claim 15, wherein the lens is comprised of two different refractive indeces.

17. The IOL of claim 16, where the anterior side or posterior side has one refractive index, and the opposing side has a different refractive index.

18. A method of designing an intraocular lens to match a retina surface comprising:

receiving a measurement of at least a shape of a retina of a subject eye, wherein the retina has a radius of curvature;

determining a desired shape factor for an IOL, wherein the shape factor is determined from the group consisting of optical factors, engineering constraints and anatomical constraints;

determining a total IOL power for focusing light onto the retina surface of the subject eye;

determining the power of each respective surface of the IOL from a thickness of the IOL, the desired total IOL power and the desired shape factor;

comparing a Petzval sum to a retinal radius, wherein if the Petzval sum and the retinal radius do not match, increase or decrease the power of the two surfaces while keeping the shape factor constant and then adjust the thickness of the IOL to correct the total IOL power.