| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ophthalmologic measuring apparatus capable of measuring the accurate severity of dry eyes even with flicks. <P>SOLUTION: Illumination light is projected to a lacrimal fluid layer on a cornea of an eye to be examined. The lacrimal fluid layer is imaged by a CCD camera 14, and the image is processed to compute the vertical moving amount of the lacrimal fluid layer. A fixation bright point projected on the cornea by a fixation light source 12 is imaged by the CCD camera 10 to obtain the fixation moving amount of the eye to be examined. The moving amount of the lacrimal fluid layer is corrected based on the fixation moving amount, and a value indicating the amount of lacrimal fluid stored in the eye to be examined is determined from the rate of temporal change of the corrected moving amount of the lacrimal fluid layer. With this constitution, a symptom of the dry eye even in a moderate dry eye state can be quantified with high reliability even with flicks during measurement. <P>COPYRIGHT: (C)2009,JPO&INPIT |
