Methods for tailoring the refractive index of lenses

    公开(公告)号:US10254562B2

    公开(公告)日:2019-04-09

    申请号:US15068396

    申请日:2016-03-11

    摘要: Methods and devices for altering the power of a lens, such as an intraocular lens, are disclosed. In one method, the lens comprises a single polymer matrix containing crosslinkable pendant groups, wherein the polymer matrix increases in volume when crosslinked. The lens does not contain free monomer. Upon exposure to ultraviolet radiation, crosslinking causes the exposed portion of the lens to increase in volume, causing an increase in the refractive index. In another method, the lens comprises a polymer matrix containing photobleachable chromophores. Upon exposure to ultraviolet radiation, photobleaching causes a decrease in refractive index in the exposed portion without any change in lens thickness. These methods avoid the need to wait for diffusion to occur to change the lens shape and avoid the need for a second exposure to radiation to lock in the changes to the lens.

    METHODS FOR TAILORING THE REFRACTIVE INDEX OF LENSES
    6.
    发明申请
    METHODS FOR TAILORING THE REFRACTIVE INDEX OF LENSES 审中-公开
    用于定制镜片折射率的方法

    公开(公告)号:US20160195735A1

    公开(公告)日:2016-07-07

    申请号:US15068396

    申请日:2016-03-11

    IPC分类号: G02C7/02 G02C7/04 G02B1/04

    摘要: Methods and devices for altering the power of a lens, such as an intraocular lens, are disclosed. In one method, the lens comprises a single polymer matrix containing crosslinkable pendant groups, wherein the polymer matrix increases in volume when crosslinked. The lens does not contain free monomer. Upon exposure to ultraviolet radiation, crosslinking causes the exposed portion of the lens to increase in volume, causing an increase in the refractive index. In another method, the lens comprises a polymer matrix containing photobleachable chromophores. Upon exposure to ultraviolet radiation, photobleaching causes a decrease in refractive index in the exposed portion without any change in lens thickness. These methods avoid the need to wait for diffusion to occur to change the lens shape and avoid the need for a second exposure to radiation to lock in the changes to the lens.

    摘要翻译: 公开了用于改变诸如人工晶状体的透镜的功率的方法和装置。 在一种方法中,透镜包含含有可交联侧基的单一聚合物基质,其中当交联时聚合物基体的体积增加。 镜头不含有游离单体。 当暴露于紫外线辐射时,交联使得透镜的暴露部分体积增加,导致折射率增加。 在另一种方法中,透镜包含含有可光漂白的发色团的聚合物基质。 在紫外线照射下,光漂白导致曝光部分的折射率降低,透镜厚度没有变化。 这些方法避免了等待发生扩散以改变透镜形状的需要,并且避免了第二次暴露于辐射以锁定透镜变化的需要。