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US 2010/0134754 A1Published application
Alternating optical system: mixing and matching optics to maximize binocular visual benefits
AssigneeNovartis AG
InventorsXin Hong, Mutlu Karakelle, Xiaoxiao Zhang, Arthur Bradley
Life of this patent
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Abstract
In one aspect, the present invention provides a method for correcting vision that employs two lenses, at least one of which is a multifocal lens, with different focusing characteristics for use in the two eyes of the patient. The visual performance of each lens (e.g., visual contrast or acuity) is selected in accordance with a predefined relation so as to optimize the binocular visual performance provided by the combination of the lenses.
Claims64
A method of correcting vision, comprising the steps of:
- a) providing a first lens for enhancing vision in one eye of a patient, and
- b) providing a second lens for enhancing vision in the other eye of the patient, wherein at least one of the first or the second lenses is a multifocal lens, and the first and the second lenses exhibit different focusing characteristics so as to provide the patient with a binocular visual performance in a selected range, the binocular visual performance being related to a visual performance of the first lens and the second lens in accordance with the following relation:
- B
- =
- (
- L
- kl
- +
- R
- kr
- )
- 1
- kb
- wherein,
- B denotes the binocular visual performance,
- L denotes the visual performance of one of the lenses,
- R denotes the visual performance of the other lens, and
- kl is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
- kr is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
- kb is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
17 more elements
A lens kit for correcting a patient's vision, comprising
- a) a first lens for use in one eye of the patient, and
- b) a second lens for use in the other eye of the patient,
- the first and the second lenses exhibiting different focusing characteristics so as to provide the patient with a binocular visual performance in a selected range,
- wherein at least one of the first and the second lenses is a multifocal lens, and wherein the binocular visual performance is related to visual performances of the first and the second lenses in accordance with the following relation:
- B
- =
- (
- L
- kl
- +
- R
- kr
- )
- 1
- kb
- wherein,
- B denotes the binocular visual performance,
- L denotes the visual performance of one of the lenses,
- R denotes the visual performance of the other lens, and
- kl is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
- kr is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
- kb is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
19 more elements
A method of correcting vision, comprising the steps of:
- a) selecting a binocular visual performance (B) for a patient, and
- b) selecting a visual performance (L) of a first lens for use in a first eye of the patient as a function of a visual performance (R) of a second lens in a second eye of the patient in accordance with the following relation:
- B
- =
- (
- L
- kl
- +
- R
- kr
- )
- 1
- kb
- wherein,
- B denotes the binocular visual performance,
- L denotes the visual performance of one of the lenses,
- R denotes the visual performance of the other lens, and
- kl is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
- kr is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
- kb is a parameter having a value no less than 1.0, preferably in a range of about 1.4 to about 4.
- and, wherein at least one of the first and the second lenses is a multifocal lens.
18 more elements
Dependencies are inferred from the claim text.