Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for reducing dysphotopsia effects, such as haloes and glare, in extended range of vision lenses. Exemplary ophthalmic lenses can include a central zone with a first set of three echelettes arranged around the optical axis, the first set having a profile in r-squared space. An intermediate zone includes a second set of three echelettes arranged around the optical axis, the second set having a profile in r-squared space that is different than the profile of the first set. A peripheral zone includes a third set of three echelettes arranged around the optical axis, the third set having a profile in r-squared space that is different than the profile of the first set and the profile of the second set.

The disclosure is related to a new soft contact lens with edge to edge photochromic material where geometry of the optical region and the peripheral region of the lens are optimized to give the best cosmetic effect on eye. The vision correction component and the mechanical component of that soft contact lens are designed independently from each other. The design of each component, vision and mechanical, is achieved by the mean of using diffractive optics.

An ophthalmic lens has a changeable corrective effect, which automatically changes over a predetermined period of time. Further, the ophthalmic lens provides a gradually increasing undercorrection of the far point of the eye over the course of a day, which brings about a deceleration in the axial length growth of the eyeball. In addition, a method for automatically adapting a corrective effect, a pair of spectacles, and a use of an ophthalmic lens are disclosed.

A diffractive multifocal lens is disclosed, comprising an optical element having at least one diffractive surface, the surface profile comprising a plurality of annular concentric zones. The optical thickness of the surface profile changes monotonically with radius within each zone, while a distinct step in optical thickness at the junction between adjacent zones defines a step height. The step heights for respective zones may differ from one zone to another periodically so as to tailor diffraction order efficiencies of the optical element. In one example of a trifocal lens, step heights alternate between two values, the even-numbered step heights being lower than the odd-numbered step heights. By plotting a topographical representation of the diffraction efficiencies resulting from such a surface profile, step heights may be optimized to direct a desired level of light power into the diffraction orders corresponding to near, intermediate, and distance vision, thereby optimizing the performance of the multifocal lens.

Embodiments include methods and systems forming optical structures in an ophthalmic lens for improving a patient's vision by accessing a prescription for the patient; generating a variable wavefront based on the prescription; phase wrapping the first variable wavefront, wherein phase wrapping the first variable wavefront includes collapsing the first variable wavefront to a phase-wrapped wavefront having a predetermined phase height; and generating, based on the phase-wrapped wavefront, energy output parameters for forming an optical structure in the ophthalmic lens using an energy source.

An apparatus to treat refractive error of an eye comprises an optic comprising an optical zone and a peripheral defocus optical structure to form images of a plurality of stimuli anterior or posterior to a peripheral portion of a retina of the eye. In some embodiments, the peripheral defocus optical structure located outside the optical zone. In some embodiments, the peripheral defocus optical structure comprises optical power to focus light to a different depth of the eye than the optical zone. In some embodiments, the optic comprises one or more of a lens, an optically transparent substrate, a beam splitter, a prism, or an optically transmissive support.

An ophthalmic device including liquid crystal alignment features is disclosed herein. An example device may include first and second optical elements. The first optical element may include first liquid crystal alignment features formed on a first surface. The second optical element may include a first optical diffraction grating formed on a second surface, and second liquid crystal alignment features formed on the second surface. The first surface of the first optical element may face the second surface of the second optical element, and a first liquid crystal material may be disposed between the first and second surfaces of the first and second optical elements.

A double-sided aspheric diffractive multifocal lens and methods of manufacturing and design of such lenses in the field of ophthalmology. The lens can include an optic comprising an aspheric anterior surface and an aspheric posterior surface. On one of the two surfaces a plurality of concentric diffractive multifocal zones can be designed. The other surface can include a toric component. The double-sided aspheric surface design results in improvement of the modulation transfer function (MTF) of the lens-eye combination by aberration reduction and vision contrast enhancement as compared to one-sided aspheric lens. The surface having a plurality of concentric diffractive multifocal zones produces a near focus, an intermediate focus, and a distance focus.

The invention discloses a myopia control optical lens and a manufacturing method, relating to the technical field of optical lenses. Based on a diffraction grating written on or in kinoform diffraction and multifractal Fresnel zone plate lenses according to a profile in a map of radial refractive power of corneal topography, the diffraction grating determines the intensity of peripheral light guided to the periphery of retina, to achieve the purposes of optimal myopia defocusing. Long and short distance vision are enhanced, the current problems of different designs of frame glasses, multifocal and defocused myopia control are solved, the blurred and instable vision at different distances is controlled, and the myopia aggravation is prevented. The invention allows people to drive, watch and read under bright lighting conditions, and when reading is not needed in a dark environment, the invention allows people to drive and watch dashboards more clearly, and can prevent myopia aggravation.

A diffractive multifocal lens is disclosed, comprising an optical element having at least one diffractive surface, the surface profile comprising a plurality of annular concentric zones. The optical thickness of the surface profile changes monotonically with radius within each zone, while a distinct step in optical thickness at the junction between adjacent zones defines a step height. The step heights for respective zones may differ from one zone to another periodically so as to tailor diffraction order efficiencies of the optical element, in one example of a trifocal lens, step heights alternate between two values, the even-numbered step heights being lower than the odd-numbered step heights. By plotting a topographical representation of the diffraction efficiencies resulting from such a surface profile, step heights may be optimized to direct a desired level of light power into the diffraction orders corresponding to near, intermediate, and distance vision, thereby optimizing the performance of the multifocal lens.