公开(公告)号：US20180296321A1

公开(公告)日：2018-10-18

申请号：US15768741

申请日：2016-09-28

Applicant: KOWA COMPANY, LTD.

Inventor： Kenichi KOBAYASHI ,  Shuji ABE ,  Genyo MIDORIKAWA

IPC: A61F2/16 ,  A61F9/007

Abstract: It is provided an intraocular lens insertion system that achieves a preferable insertion of an intraocular lens without using viscoelastic material in an eyeball. The intraocular lens insertion system includes an intraocular lens insertion apparatus configured to use a predetermined driving force to move an intraocular lens and insert the intraocular lens into an eyeball, an irrigating solution infusion apparatus configured to infuse irrigating solution into the eyeball, a driving source configured to deliver the predetermined driving force to the intraocular lens insertion apparatus, an irrigating solution source configured to deliver the irrigating solution to the irrigating solution infusion apparatus, and a switching unit configured to switch in a multistage manner a control of a delivery of the irrigating solution from the irrigating solution source to the irrigating solution infusion apparatus and a control of a delivery of the predetermined driving force from the driving source to the intraocular lens insertion apparatus.

公开(公告)号：US20230301775A1

公开(公告)日：2023-09-28

申请号：US18023704

申请日：2021-10-07

Applicant: KOWA COMPANY, LTD.

Inventor： Shuji ABE ,  Yasuhiro HISHINUMA ,  Kotaro MITSUMOTO ,  Haruo ISHIKAWA ,  Norio SHIMIZU

IPC: A61F2/16

CPC classification number: A61F2/1618 ,  A61F2/1654 ,  G02B27/4205

Abstract: A multifocal diffractive lens is provided which achieves efficient use of light. The multifocal diffractive lens 100 includes a diffraction grating 1c. Negative-order light L2 produces a focal point f2 for far vision and 0-order light L1 produces a focal point f1 nearer to that for far vision. The number of focal points is two or more. The focal position fc for far vision in polychromatic performance evaluation is located nearer to the multifocal diffractive lens than the focal position fs for far vision in monochromatic performance evaluation.