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;
a central echelette imposed on the anterior or the posterior face;
a central zone; and
a peripheral zone that surrounds the central echelette,wherein the lens provides an MTF volume of at least about 35% over a continuous range of diffractive power of at least about 0.75 D.
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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.
255 Citations
15 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; a central echelette imposed on the anterior or the posterior face; a central zone; and a peripheral zone that surrounds the central echelette, wherein the lens provides an MTF volume of at least about 35% over a continuous range of diffractive power of at least about 0.75 D. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification