公开(公告)号：US20070258043A1

公开(公告)日：2007-11-08

申请号：US11821976

申请日：2007-06-26

申请人： Takayoshi Suzuki ,  Norihiko Yokol

发明人： Takayoshi Suzuki ,  Norihiko Yokol

IPC分类号： A61B3/10

CPC分类号： A61B3/101 ,  G01B11/24 ,  G01B11/255

摘要： A grid formed with apertures of a predetermined shape is illuminated with light from a lamp and projected onto a tear meniscus accumulated on the lower eyelid. The aperture image projected on the tear film is imaged by a CCD camera. The tear meniscus functions as a concave mirror, so that the magnification factor depends on the radius of meniscus curvature. A processor calculates the magnitude of the grid image and evaluates the radius of meniscus curvature. Since the volume of lacrimal fluid varies depending upon the radius of meniscus curvature, the latter is used as a value representing the lacrimal fluid volume for dry eye diagnose purposes.

摘要翻译： 形成有预定形状的孔的网格被来自灯的光照射并且投射到积聚在下眼睑上的泪液弯月面上。 投影在泪膜上的光圈图像由CCD照相机成像。 撕裂弯月面用作凹面镜，因此放大倍率取决于弯月面的半径。 处理器计算网格图像的大小并评估弯月面弯曲半径。 由于泪液的体积根据弯月面弯曲的半径而变化，所以后者被用作代表干眼诊断目的的泪液体积的值。