Contact lens and process for fitting
    1.
    发明授权
    Contact lens and process for fitting 失效
    隐形眼镜和装配工艺

    公开(公告)号:US5864379A

    公开(公告)日:1999-01-26

    申请号:US716199

    申请日:1996-09-27

    申请人: Stephen A. Dunn

    发明人: Stephen A. Dunn

    IPC分类号: G02C7/04 A61F2/16

    CPC分类号: G02C7/021 G02C7/042 G02C7/044

    摘要: A contact lens with a central region (10) that is optimally less than approximately 1.9 millimeters in diameter and that is preferably overcorrected by approximately 25% to 100% over the correction needed for reading. Unexpectedly, the central region does not impair distance vision, but compensates for presbyopia and therefore allows a user to focus on objects within a range of near and intermediate distances. A method for fitting the contact lens is also provided.

    摘要翻译: PCT No.PCT / US96 / 15589第 371日期1996年9月27日第 102(e)1996年9月27日PCT PCT 1996年9月27日PCT公布。 出版物WO97 / 12272 日期1997年4月3日具有中心区域(10)的隐形眼镜,该中心区域(10)的直径最好小于约1.9毫米,并且优选比读取所需的校正被大大超过25%至100%。 出乎意料的是,中央区域不会影响距离视力,而是补偿老花眼,因此允许用户将焦点集中在近距离和中距离范围内的物体上。 还提供了一种用于装配隐形眼镜的方法。

    Contact lens and process for fitting
    2.
    发明授权
    Contact lens and process for fitting 失效
    隐形眼镜和装配工艺

    公开(公告)号:US06540353B1

    公开(公告)日:2003-04-01

    申请号:US09212904

    申请日:1998-12-16

    申请人: Stephen A. Dunn

    发明人: Stephen A. Dunn

    IPC分类号: G02C704

    摘要: An aspheric multifocal contact lens for wearing by a patient with presbyopia is disclosed. The lens has a lens body with a rear surface adapted to fit on the surface of the eye and a front surface that interacts with the rear surface to bring about the desired optics of the lens. The lens also has a centrally located and generally circular first optic zone providing a first power correction for near vision, and a second optic zone concentric with the first optic zone and located peripherally therefrom providing a second power correction for distance vision. A transition zone concentric with the first optic zone is located between said first and second optic zones. The transition zone provides a rapid power shift of about 0.8 to about 1.6 diopters over a distance of about 0.25 mm between the power correction of the first and second zones.

    摘要翻译: 公开了一种用于佩戴老花眼患者的非球面多焦点隐形眼镜。 该透镜具有一个具有后表面的透镜体,该后表面适合于配合在眼睛的表面上,以及与后表面相互作用以产生镜片所需光学元件的前表面。 透镜还具有中心定位且通常为圆形的第一光学区域,为近视力提供第一功率校正,以及第二光学区域,与第一光学区域同心并位于其周围,为远距离视觉提供第二功率校正。 与第一光学区同心的过渡区位于所述第一和第二光学区之间。 过渡区域在第一和第二区域的功率校正之间在大约0.25mm的距离内提供约0.8至约1.6屈光度的快速功率偏移。