ACCOMMODATION COMPENSATION SYSTEMS AND METHODS

• US 20110116039A1
• Filed: 01/24/2011
• Published: 05/19/2011
• Est. Priority Date: 05/24/2007
• Status: Active Grant

• Current Assignee: AMO Development LLC (Johnson & Johnson)
• Original Assignee: AMO Development LLC (Johnson & Johnson)
• Inventors: Zickler, Leander, Dai, Guang-Ming
• Granted Patent: US 8,057,038 B2
• Time in Patent Office: Days
• US Class Current: 351/205
• CPC Class Codes: A61B 3/0025 characterised by electronic signal processing, e.g. eye models
• CPC Class Codes: A61B 3/1015 for wavefront analysis
• CPC Class Codes: A61B 3/107 for determining the shape or measuring the curvature of the cornea
• CPC Class Codes: A61B 3/112 for measuring diameter of pupils
• CPC Class Codes: A61B 3/14 Arrangements specially adapted for eye photography apparatus or arrangements for taking photographs per se G03B
• CPC Class Codes: A61F 2009/0087 Lens
• CPC Class Codes: A61F 2009/00872 Cornea
• CPC Class Codes: A61F 2009/0088 based on wavefront
• CPC Class Codes: A61F 2009/00895 Presbyopia
• CPC Class Codes: A61F 2009/00897 Scanning mechanisms or algorithms
• CPC Class Codes: A61F 9/008 using laser
• CPC Class Codes: A61F 9/00804 Refractive treatments
• CPC Class Codes: G02C 7/041 bifocal; multifocal

Abstract

Methods and systems for obtaining an ocular aberration measurement of an eye of a patient are provided. Exemplary techniques involve obtaining a first induced metric for the eye that corresponds to a first accommodation state of the eye, obtaining a second induced metric for the eye that corresponds to a second accommodation state of the eye, and determining a natural metric of the eye based on the first and second induced metrics. An induced metric may include a pupil size or a spherical aberration. Techniques can also include determining a target metric for the eye base on the natural metric, determining whether an actual metric of the eye meets the target metric, obtaining an ocular aberration measurement of the eye if the actual metric meets the target metric, and determining a treatment for the eye based on the ocular aberration measurement.

Claims

1. A method of obtaining a residual accommodation measurement of an eye of a patient, the method comprising:

obtaining a first induced metric for the eye that corresponds to a first viewing condition;

obtaining a second induced metric for the eye that corresponds to a second viewing condition;

determining if a difference between the first induced metric and the second induced metric exceeds a threshold;

determining an accommodation characteristic of the eye if the difference between the first induced metric and the second induced metric does not exceed the threshold; and

determining the residual accommodation measurement of the eye based on the accommodation characteristic.

2. The method according to claim 1, wherein the first induced metric comprises a first induced pupil size, the second induced metric comprises a second induced pupil size, and the accommodation characteristic comprises a maximally accommodated pupil size.

3. The method according to claim 1, wherein the first induced metric comprises a first induced spherical aberration, the second induced metric comprises a second induced spherical aberration, and the accommodation characteristic comprises a maximally accommodated spherical aberration.

4. The method according to claim 1, further comprising obtaining aberration data for the eye, and determining a treatment for the eye based on the aberration data and the residual accommodation measurement.

5. The method according to claim 4, wherein the aberration data comprises a member selected from the group consisting of a wavescan aberrometer examination data, a contact lens aberrometer examination data, and an IOL aberrometer examination data.

6. The method according to claim 4, wherein the treatment comprises a presbyopia treatment.

7. The method according to claim 4, further comprising administering the treatment to the eye of the patient.

8. A method of determining a natural metric of an unaccommodated or minimally accommodated eye, the method comprising:

inputting a first induced metric for the eye that corresponds to a first accommodation state of the eye;

inputting a second induced metric for the eye that corresponds to a second accommodation state of the eye; and

determining the natural metric of the unaccommodated or minimally accommodated eye based on the first and second induced metrics and the first and second accommodation states of the eye.

9. The method according to claim 8, wherein the natural metric comprises an aberration metric or a pupil size metric.

10. The method according to claim 8, further comprising inputting three or more induced metrics corresponding to respective accommodation states of the eye, and determining the natural metric of the unaccommodated or minimally accommodated eye based on a combination of two or more of the induced metrics.

11. The method according to claim 8, wherein the natural metric comprises an aberration metric selected from the group consisting of a spherical aberration metric, a sphere metric, and a coma metric.

12. The method according to claim 8, further comprising determining a target metric for the unaccommodated or minimally accommodated eye based on the natural metric.

13. The method according to claim 8, further comprising determining an actual metric of the eye.

14. The method according to claim 13, further comprising determining whether the actual metric meets the target metric.

15. The method according to claim 14, further comprising obtaining an ocular aberration measurement of the eye if the natural metric meets a target metric.

16. The method according to claim 15, wherein the ocular aberration measurement comprises a wavescan measurement.

17. The method according to claim 8, wherein the unaccommodated or minimally accommodated eye has a power of zero diopters.

18. The method according to claim 15, further comprising determining a treatment for the eye based on the ocular aberration measurement.

19. The method according to claim 18, further comprising administering the treatment to the eye of the patient.

20. A method of determining a natural pupil size metric of an unaccommodated or minimally accommodated eye, the method comprising:

inputting a first induced pupil size metric for the eye that corresponds to a first accommodation state of the eye;

inputting a second induced pupil size metric for the eye that corresponds to a second accommodation state of the eye; and

determining the natural pupil size metric of the unaccommodated or minimally accommodated eye based on the first and second induced pupil size metrics and the first and second accommodation states of the eye.

21. The method according to claim 20, further comprising determining a target metric for the unaccommodated or minimally accommodated eye based on the natural pupil size metric, determining whether an actual metric meets the target metric, obtaining an ocular aberration measurement of the eye if the natural pupil size metric meets the target metric, determining a treatment for the eye based on the ocular aberration measurement, and administering the treatment to the eye of the patient.