Determination of the effective lens position of an intraocular lens using aphakic refractive power
First Claim
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1. A method for determining the optical power of an intraocular lens to be inserted into the eye of a patient, the method comprising:
- receiving as an input, from an input device, a value that indicates the aphakic refractive power of the patient'"'"'s eye, wherein the input device comprises a wavefront aberrometer aligned with the patient'"'"'s eye to measure the aphakic refractive power;
determining, with a processor, an estimate of the post-surgical effective lens position (ELP) of the intraocular lens for the patient'"'"'s eye, the estimate being based on the value that indicates the aphakic refractive power of the patient'"'"'s eye; and
determining an amount of optical power for the intraocular lens to be inserted into the patient'"'"'s eye based on the estimate of the post-surgical ELP of the intraocular lens in the patient'"'"'s eye.
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Abstract
An ophthalmic method for determining a relationship between aphakic ocular power and estimated effective lens position (ELP) of an intraocular lens (IOL) to be implanted in a patient'"'"'s eye. The method can be used to determine an estimate of the ELP of an IOL given the aphakic ocular power of the patient'"'"'s eye, for example, without measurement of the corneal curvature or axial length of the patient'"'"'s eye. The estimate of ELP can then be used to determine a suitable value of optical power for the IOL to be implanted in the patient'"'"'s eye.
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Citations
22 Claims
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1. A method for determining the optical power of an intraocular lens to be inserted into the eye of a patient, the method comprising:
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receiving as an input, from an input device, a value that indicates the aphakic refractive power of the patient'"'"'s eye, wherein the input device comprises a wavefront aberrometer aligned with the patient'"'"'s eye to measure the aphakic refractive power; determining, with a processor, an estimate of the post-surgical effective lens position (ELP) of the intraocular lens for the patient'"'"'s eye, the estimate being based on the value that indicates the aphakic refractive power of the patient'"'"'s eye; and determining an amount of optical power for the intraocular lens to be inserted into the patient'"'"'s eye based on the estimate of the post-surgical ELP of the intraocular lens in the patient'"'"'s eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ophthalmic method for determining a relationship between post-surgical effective lens position (ELP) of an intraocular lens and aphakic ocular power, the method comprising:
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obtaining, from an input device, a plurality of values that indicate the aphakic power of a respective plurality of eyes, wherein the input device comprises a wavefront aberrometer enabled to measure the aphakic power; determining a plurality of values that indicate the post-surgical ELP of an intraocular lens for the respective plurality of eyes; and determining a relationship between the aphakic power and the post-surgical ELP using a processor. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. An ophthalmic instrument comprising:
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a measurement device for measuring the aphakic power of a patient'"'"'s eye, wherein the measurement device comprises a wavefront aberrometer aligned with the patient'"'"'s eve to measure the aphakic power; and a processor for performing a method comprising, receiving a value that indicates the aphakic refractive power of the patient'"'"'s eye from the measurement device, determining an estimate of the post-surgical effective lens position (ELP) of an intraocular lens to be inserted in the patient'"'"'s eye, the estimate of the post-surgical ELP of the intraocular lens being based on the value that indicates the aphakic refractive power of the patient'"'"'s eye, and determining an appropriate amount of optical power for the intraocular lens to be inserted into the patient'"'"'s eye based on the estimate of the post-surgical ELP of the intraocular lens. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification