发明名称 Ophthalmologic device having means for classifying the picture data in the frame memory into the bright point regions and the mask regions
摘要 An ophthalmologic device measures corneal curvature and ocular refractive power of the eye by imaging the positions of a plurality of bright points which result from plural light rays and by imaging a predetermined pattern of the eye. The ophthalmologic device includes a frame memory to store picture data of the eye which has been imaged by a video camera. The picture data in memory is classified into bright spot regions in which bright spots are present one at a time, a corneal reflected image region in which a reflected image from the cornea of a predetermined pattern is projected into the fundus of the eye, and mask regions in which the bright points and the corneal reflected image are not present. The picture data having a luminosity greater than a predetermined threshold value is stored for later calculation of a centroid of the bright points to measure the corneal curvature of the eye.
申请公布号 US5815240(A) 申请公布日期 1998.09.29
申请号 US19970838778 申请日期 1997.04.10
申请人 NIKON CORPORATION 发明人 IKI, YOICHI
分类号 A61B3/10;A61B3/103;A61B3/107;(IPC1-7):A61B3/10 主分类号 A61B3/10
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