Noninvasive methods and apparatuses for measuring the intraocular pressure of a mammal eye
    1.
    发明授权
    Noninvasive methods and apparatuses for measuring the intraocular pressure of a mammal eye 失效
    用于测量哺乳动物眼睛的眼内压的非侵入性方法和装置

    公开(公告)号:US06673014B2

    公开(公告)日:2004-01-06

    申请号:US09972819

    申请日:2001-10-05

    IPC分类号: A61B316

    CPC分类号: A61B8/10 A61B3/165

    摘要: Noninvasive methods and apparatuses measuring the intraocular pressure (IOP) of the eye using vibratory excitation are disclosed. Prior art methods teaches that the natural frequencies of the eye vary as a function of the IOP, with each natural frequency being zero at zero IOP. The present invention recognizes that the eye has different and separate classes of natural frequencies that vary as function of the IOP, which have non-zero values for a zero value of IOP, and which have curves that extrapolate to negative IOPs to obtain zero values of frequency. Preferred methods and apparatuses of the present invention measure a first natural frequency of this class at an unknown IOP value, and thereafter compare it to one or more known values of the first natural frequency measured at corresponding known IOPs to estimate value of the unknown IOP. Preferred embodiments include measuring one or more additional natural frequencies.

    摘要翻译: 公开了使用振动激励测量眼睛的眼内压(IOP)的无创方法和装置。 现有技术的方法教导了眼睛的固有频率作为IOP的函数而变化,每个固有频率在零IOP时为零。 本发明认识到,眼睛具有不同且分离的固有频率的类别,其随着IOP的功能而变化,IOP的零值具有非零值,并且具有外推到负IOP的曲线,以获得零值 频率。 本发明的优选方法和装置以未知IOP值测量该类的第一固有频率,然后将其与在对应的已知IOP测量的第一固有频率的一个或多个已知值进行比较以估计未知IOP的值。 优选实施例包括测量一个或多个另外的固有频率。