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US 10,945,834 B2Granted
Hyperchromatic presybyopia-correcting intraocular lenses
AssigneeAlcon Inc.
InventorsZsolt Bor, Mikhail Ovchinnikov
Life of this patent
Estimating the term…
Abstract
An ophthalmic device includes at least one ophthalmic lens and at least one diffractive structure for the at least one ophthalmic lens. The ophthalmic lens(es) have at least one base focal length and a base power for a first wavelength of visible light. The diffractive structure(s) have a chromatic aberration such that the diffractive structure(s) have a first power for the first wavelength of visible light and a second power for a second wavelength of visible light. A difference between the first power and the second power is at least two diopters.
Claims13
An ophthalmic device comprising:
- at least one ophthalmic lens having at least one base focal length and a base power;
- and
- at least one diffractive structure for the at least one ophthalmic lens, the at least one diffractive structure configured to induce a chromatic aberration such that the ophthalmic device transmits a first wavelength of visible light at a first power and a second wavelength of visible light at a second power;
- wherein a difference between the first power and the second power is at least two diopters, thereby providing an extended depth of focus across a spectrum of visible light between the first wavelength and the second wavelength.
1 more element
An ophthalmic device comprising:
- an ophthalmic lens having at least one base focal length and at least one base power, the ophthalmic lens including an anterior surface and a posterior surface, the at least one base power corresponding to at least one base curvature of at least one of the anterior surface and the posterior surface, the ophthalmic lens further comprising a diffractive structure configured to induce a chromatic aberration such that the ophthalmic lens transmits a first wavelength of visible light at a first power and a second wavelength of visible light at a second power, wherein a difference between the first power and the second power is at least three diopters and not more than five diopters, thereby providing an extended depth of focus across a spectrum of visible light between the first wavelength and the second wavelength;
- and
- a plurality of haptics coupled with the ophthalmic lens.
Dependencies are inferred from the claim text.