| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily perform an alignment of a device with an eye to be examined. <P>SOLUTION: An ophthalmologic device for the alignment of a central axis of the device with the eye to be examined is equipped with a pair of illumination optical systems for illuminating an anterior ocular segment of the eye to be examined and forming a corneal reflected image of illumination at a position off the center of the corneal, a means for detecting positions of corneal reflected images of the illumination for detecting the positions of the corneal reflected images of the illumination by the illumination optical system, a control means for turning off a light source of an alignment index forming optical system in response to signals for starting a measurement and acquiring the positions of the corneal reflected images of the illumination immediately before starting the measurement and during the measurement by the means for detecting positions of corneal reflected images of the illumination, and a determining means for determining displacement during the measurement based on a change in the position of the corneal reflected image of the illumination during the measurement from the position of the corneal reflected image of the illumination immediately before starting the measurement. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
