Corneal topography apparatus with further integrated devices
    1.
    发明公开
    Corneal topography apparatus with further integrated devices 审中-公开
    Hornhauttopographievorrichtung mit weiteren integrierten Vorrichtungen

    公开(公告)号:EP2016888A1

    公开(公告)日:2009-01-21

    申请号:EP08008897.4

    申请日:2005-10-14

    摘要: An apparatus for corneal topographic analysis, determining the precise curvature of a cornea and the position of the optical axis giving a map of such curvature to an operator, and also for pupillometric analysis, determining the pupil contour and the relative centre both in steady and dynamic conditions during transients of contraction and dilation, and for a real analysis by fluoresceine by testing a contact lens fitting on a cornea. The apparatus comprises a measuring head (6) having a Placido disc (2) backlighted with a light source (31), suitable for causing the pupil to contract. Coaxial to the disc (2) a videocamera (10) is mounted, comprising an optical unit (11) for focusing on a shot image. The measuring head (6) comprises a plurality of infrared LEDs, for example respectively four LEDs (14,15,16,17), suitable for lighting the eye in a way suitable not to disturb the aperture of the pupil and two visible light LEDs (18,19) arranged on the Placido disc (2) suitable for causing the contraction of the pupil.

    摘要翻译: 一种用于角膜地形分析的装置,确定角膜的精确曲率和光轴的位置,给予操作者这种曲率的图,并且还用于瞳孔分析,确定瞳孔轮廓和相对中心在稳定和动态 在收缩和扩张的瞬变期间的条件,以及通过测试在角膜上的隐形眼镜的荧光素的真实分析。 该装置包括具有适于使瞳孔收缩的具有用光源(31)背光的普拉西多盘(2)的测量头(6)。 与光盘同轴(2)安装摄像机(10),其包括用于聚焦在拍摄图像上的光学单元(11)。 测量头(6)包括多个红外LED,例如分别为四个LED(14,15,16,17),其适合于以不干扰瞳孔和两个可见光LED的方式照明眼睛 (18,19),其布置在适于引起瞳孔收缩的普拉西多盘(2)上。