SINGLE MICROSTRUCTURE LENS, SYSTEMS AND METHODS
First Claim
1. An ophthalmic lens comprising:
- an anterior face and a posterior face, the faces disposed about an optical axis; and
an isolated echelette imposed on the anterior or the posterior face.
1 Assignment
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Accused Products
Abstract
Systems and methods for providing enhanced image quality across a wide and extended range of foci encompass vision treatment techniques and ophthalmic lenses such as contact lenses and intraocular lenses (IOLs). Exemplary IOL optics can include a circular surface structure which acts as a diffractive or phase shifting profile. In some cases, a single ring IOL includes an anterior face and a posterior face, where a profile can be imposed on the anterior or posterior surface or face. The profile can have an inner portion such as a microstructure or central echelette, and an outer portion. Between the inner portion and the outer portion, there may be a transition zone that connects the inner and outer portions.
149 Citations
20 Claims
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1. An ophthalmic lens comprising:
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an anterior face and a posterior face, the faces disposed about an optical axis; and an isolated echelette imposed on the anterior or the posterior face. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15)
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12. The ophthalmic lens of claim 12, wherein the peripheral portion has a refractive profile.
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16. An ophthalmic lens, comprising:
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a diffractive primary zone that presents a base diffractive surface having a purely optical function; and a refractive peripheral zone that surrounds the diffractive primary zone. - View Dependent Claims (17, 18)
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19. A method of designing an ophthalmic lens comprised of utilizing pupil size measurements and based on the measurements determining the size of an isolated echelette to impose on the surface of a lens.
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20. A lens/method according to claim 20, in which the measurements are based on the pupil sizes of a group of patients.
Specification