Devices and methods of selecting intraocular lenses

  • US 20070260157A1
  • Filed: 11/11/2005
  • Published: 11/08/2007
  • Est. Priority Date: 11/12/2004
  • Status: Active Grant
First Claim
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1. A method of selecting an IOL to be implanted in the eye of a subject comprising:

  • a) determining an axial eye length, the pupil size at a desired light level and determining at least one of a desired postoperative refraction and a desired spherical aberration;

    b) determining an aspheric representation of the corneal curvature(s);

    c) selecting an IOL with predetermined power and asphericity, and determining the location of the lens haptic plane (LHP);

    d) employing the results of previous sections to establish an eye model;

    e) computing, by means of a ray tracing routine with said eye model, an expected at least one of a postoperative refraction and spherical aberration;

    f) in the case that the at least one of the expected postoperative refraction and spherical aberration is not within a predetermined criteria, selecting another IOL with different power and/or asphericity and repeating steps d) and e) until the at least one of the expected postoperative refraction and spherical aberrations is within the at least one of the desired postoperative refraction and desired spherical aberration; and

    g) selecting, for implantation, an implantable IOL of the nearest power and asphericity available or designing an implantable IOL that results in the at least one of the desired postoperative refraction and the desired spherical aberration.

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