Hoya Corporation

Hoya Medical Singapore Pte. Ltd.

Demas Sanger

Tjundewo Lawu

Provided are an intraocular lens and a technique associated therewith, wherein an average value (exceeding 0 D) of base difference values within a first region from a lens center O to a position r1 of a first boundary is greater than 5 times an average value (exceeding 0 D) of base difference values within the first region from a lens center O of a virtual spherical lens having a base power at the lens center O to the position r1, a second region has a power resulting from adding one or more positive constant powers to a reference aspheric power, in a third region, the power is reduced so as to provide a negative longitudinal spherical aberration that cancels at least part of a positive longitudinal spherical aberration caused by a cornea, and a second step value is greater than a first step value.

Intraocular lens

Provided is an intraocular lens including a lens body having a back surface disposed on a retinal side and a front surface disposed on a corneal side, wherein an entire back surface is shaped in such a way as to protrude from a peripheral edge of the back surface toward the retinal side in a direction of an optical axis, in a shape of a truncated cone, and the front surface has any of the following shapes (i) to (iii);

Intraocular lens, method for designing the same, and method for manufacturing the same

Ocular implant insertion apparatus configured for screw-type and push-type operation and associated methods. Such insertion apparatus includes a main body defining a longitudinal axis and a plunger, movable relative to the main body, including a rod portion and an operational portion rotatably mounted on the rod portion. One of the main body and the plunger operational portion includes a helical slot and at least one longitudinally extending clearance groove that intersects the helical slot and the other of the main body and the operational portion includes at least one protrusion that is sized and shaped to fit within the helical slot and within the at least one longitudinally extending clearance groove.

Ocular implant insertion apparatus and 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.

A multifocal ophthalmic lens, including: a far zone for correcting a far vision; and a near zone for correcting a near vision, arranged concentrically in an optical region of the lens, wherein a power distribution is set to vary progressively in radial direction of the far zone and the near zone; power is altered discontinuously to have a stepwise power difference at a boundary between the far zone and the near zone, the value of the power difference at the boundary between the far zone and the near zone is not greater than a maximum value of an intermediate power for correcting an intermediate vision.

Growing community of inventors

Fukaya, Japan

Demas Sanger