Patent classifications
A61F2/1618
Multifocal lens having reduced visual disturbances
A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having an anterior surface, a posterior surface, at least one diffractive structure and at least one base curvature. The at least one diffractive structure for provides a first spherical aberration for a first focus corresponding to at least a first focal length. The at least one base curvature provides a second spherical aberration for at least a second focus corresponding to at least a second focal length. The first spherical aberration and the second spherical aberration are provided such that the first focus has a first focus spherical aberration and the second focus has a second focus spherical aberration. The first focus spherical aberration is opposite in sign to the second focus spherical aberration.
Intraocular lenses having zone-by-zone step height control
A method and system provide an ophthalmic device. The ophthalmic device includes an ophthalmic lens having anterior surface, a posterior surface and at least one diffractive structure including a plurality of zones. The at least one diffractive structure is for at least one of the anterior surface and the posterior surface. Each zone includes at least one echelette having a least one step height. The step height(s) are individually optimized for each zone. To compensate chromatic aberration of eye from distance to a range of vision, a greater than 2π phase step height may be employed and the step height(s) folded by a phase, which is an integer multiple of two multiplied by π. Hence chromatic aberration of eye may be compensated to improve vision from distance to near.
High-efficiency wide-angle beam steering system
Optical beam steering and focusing systems, devices, and methods that utilize diffractive waveplates are improved to produce high efficiency at large beam deflection angles, particularly around normal incidence, by diffractive waveplate architectures comprising a special combination of liquid crystal polymer diffractive waveplate both layers with internal twisted structure and at a layer with uniform structure.
DIFFRACTIVE LENSES AND RELATED INTRAOCULAR LENSES FOR PRESBYOPIA TREATMENT
Apparatuses, systems and methods for providing improved ophthalmic lenses, particularly intraocular lenses (IOLs), include features for reducing dysphotopsia effects, such as straylight, haloes and glare, in diffractive lenses. Exemplary ophthalmic lenses can include a diffractive profile that distributes light among a near focal length, a far focal length, and one or more intermediate focal length. The diffractive profile provides for minimized or zero step heights between one or more pairs of diffractive zones for reducing visual artifacts.
Intraocular Lens Combination for Restoration of Refraction and Accommodation
An intraocular lens combination of independent lens constructions includes a first lens construction for restoration of refraction of the aphakic eye and a second lens construction for restoration of accommodation of the phakic eye. The preferred embodiment of the first lens construction includes a lens of fixed optical power implanted in the capsular bag and second lens construction including an accommodative lens of variable optical power implanted in front of the bag. The intraocular lens combination can include corrective optics to correct for both fixed and variable residual optical errors.
Artificial eye lens having medicine repository formed therein, and method for producing an artificial eye lens
The invention relates to an artificial eye lens comprising an optical part, which has a first optical side as viewed in a direction of an optical principal axis of the artificial eye lens and an opposite second optical side, wherein a structure with at least one depression is formed in a haptic arrangement of the artificial eye lens and/or in a surround that surrounds the optical part at least in certain areas and that differs from the haptic arrangement, wherein the structure is formed as a micro-perforation with a multiplicity of perforation zones and at least some perforation zones are filled at least in certain areas with at least one medicament for the purposes of producing a medicament repository. The invention also relates to a method for producing such an artificial eye lens.
Distance dominant intraocular lens
An intraocular lens includes a base refractive structure having anterior and posterior surfaces that are shaped for producing a first optical power and a diffractive structure formed in one of the surfaces of the base refractive structure including overlapping first and second diffractive patterns over a common aperture for producing second and third optical powers. The second optical power is an uneven division of the third optical power. The first and second diffractive patterns have respective step heights that are separately varied as a function of radial distance from the optical axis over the common aperture.
Intraocular lens
The present invention relates to an intraocular lens comprising: a primary lens (1000) having a first focal length, a first surface, and a second surface; a secondary lens (2000) having at least two focal lengths, a first surface (2100), and a second surface (2200), wherein the second surface (2200) of the secondary lens (2000) conforms to the first surface of the primary lens (1000), while the secondary lens (2000) is attached to the primary lens (1000) by peelable adhesive forces over substantially its second surface (2200).
INTRAOCULAR LENS INCLUDING SILICONE OIL
An intraocular lens (IOL) having an optical axis extending in an anterior-posterior direction and an equator extending in a plane substantially perpendicular to the optical axis is described. The IOL includes: an elastic anterior face located anterior to the equator; a posterior face located posterior to the equator, wherein the anterior face, the posterior face, or both comprises a poly(dimethylsiloxane) elastomer having a durometer between about 20 Shore A to about 50 Shore A; and a chamber located between the anterior face and the posterior face comprising a silicone oil comprising polysiloxanes comprising diphenyl siloxane and dimethyl siloxane units, the silicone oil having a maximum viscosity of about 800 cSt at 25° C.
Fresnel piggyback intraocular lens that improves overall vision where there is a local loss of retinal function
Systems and methods are provided for improving overall vision in patients suffering from a loss of vision in a portion of the retina (e.g., loss of central vision) by providing a piggyback lens which in combination with the cornea and an existing lens in the patient's eye redirects and/or focuses light incident on the eye at oblique angles onto a peripheral retinal location. The piggyback lens can include a redirection element (e.g., a prism, a diffractive element, or an optical component with a decentered GRIN profile) configured to direct incident light along a deflected optical axis and to focus an image at a location on the peripheral retina. Optical properties of the piggyback lens can be configured to improve or reduce optical errors at the location on the peripheral retina. One or more surfaces of the piggyback lens can be a toric surface, a higher order aspheric surface, an aspheric Zernike surface or a Biconic Zernike surface to reduce optical errors in an image produced at a peripheral retinal location by light incident at oblique angles. One or more surfaces of the piggyback lens can be faceted.