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Piggyback intraocular lens that improves overall vision where there is a local loss of retinal function

  • US 10,136,990 B2
  • Filed: 03/10/2015
  • Issued: 11/27/2018
  • Est. Priority Date: 03/10/2014
  • Status: Active Grant
First Claim
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1. An ophthalmic lens configured to improve vision for a patient'"'"'s eye, the lens comprising:

  • an optic with a first surface and a second surface opposite the first surface, the optic having an optical axis that intersects the first and the second surface, wherein the optic when disposed in an eye of a patient is configured to reduce optical errors together with a cornea and an existing lens in the eye of the patient due to at least one of astigmatism or coma for light incident at an oblique angle with respect to an optical axis of the eye of the patient and focused at a peripheral retinal location disposed at a distance from the fovea and at an eccentricity of about 1 degree to about 25 degrees with respect to the fovea in a horizontal or a vertical plane,wherein the first surface or the second surface of the optic is configured as a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface described by at least one of (i) aspheric coefficients having an order greater than or equal to 8, or (ii) at least six Zernike coefficients,wherein a thickness of the optic along the optical axis of the optic is less than 1.0 mm,wherein a refractive power provided by the optic is between −

    5.0 Diopter and +5.0 Diopter, andwherein an astigmatic power provided by the optic is between 0.5 Diopter and 6.0 Diopter.

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