Hoya Corporation

Rayner Intraocular Lenses Limited

Other

Barrett, Graham David

Tjundewo Lawu

Graham Barrett

Demas Sanger

A method improves depth of focus in a first eye only by adding a higher order aberration (HOA) to the first eye by adding a monofocal optical device to the first eye. The method may also correct a spherical aberration in a second eye by inserting a monofocal aspheric IOL. The HOA added to the first eye may be selected from the group consisting of spherical, trefoil and coma. Additionally, the monofocal optical device inserted into the first eye may comprise a monofocal aspheric IOL that adds spherical aberration to the first eye. The optical device inserted into the first eye may comprise a 20 D monofocal aspheric IOL that adds 0.4 &#x3bc;m of spherical aberration to the first eye at 6 mm entrance pupil and adds 0.1 &#x3bc;m of spherical aberration to the first eye at 4 mm entrance pupil.

Extended depth of focus intraocular lenses and associated methods

A wide range depth of focus vortex IOL or other optical device or element and processes for manufacturing same.

Wide depth of focus vortex intraocular lenses and associated methods

Methods and apparatus involving extended depth of focus IOLs.

Extended depth of focus intraocular lens and associated methods

An intraocular lens in which deterioration in contrast is suppressed even when the optical axis of the intraocular lens is decentered from the optical axis of the eyeball when the intraocular lens is inserted into the eye while the advantage of a conventional aberration reduction type intraocular lens that the image is seen clearly is sustained by employing such a power distribution as respectively having at least one positive power deviation region (E) having a power larger than that represented by the reference power distribution and at least one negative power deviation region (E) having a power smaller than that represented by the reference power distribution in the central region of the intraocular lens assuming that a power distribution being set to cancel the spherical aberration of cornea when the intraocular lens is inserted into the eye is the reference power distribution.

Intraocular lens

There is provided a diffractive multifocal lens, wherein a diffraction phase structure of a diffraction pattern has a structure expressed by the following formula: wherein &#x3be; indicates a position in a radial direction of the lens in one period of the diffraction pattern, and &#x3c6;(&#x3be;) indicates a value (radian) of a phase shift amount of light passing through the position of &#x3be; from the phase of light passing through a reference plane.

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Toda, Japan

Tjundewo Lawu