| 摘要 |
<p>PURPOSE:To safely and easily switch two measuring systems having different functions by providing the edge part position recognizing means and the edge part position setting means of a detected edge which is in contact with the cornea of an eye to be examined. CONSTITUTION:A first measuring system measuring the cornea refraction force of an examined eye E and a second measuring system obtaining an eye axis length are provided in a main body 2 provided on a sliding stand 1. In the second measuring system, when a contact shoe slides in the direction of the examined eye E, a motor driving controller drives and controls an electric motor 16 at a high speed in an initial sliding stage, and when the switch of a probe holder 13 is turned on, the low-speed sliding of the electric motor 16 is controlled. Thus, a switching time is shortened, and a fear that the probe 12 collides with the cornea of the examined eye E at intersive inertia force can be evaded. At the time of the measurement of cornea refraction force, after a suitable alignment operation is carried out while a television monitor 8 is being observed, when a mode is switched to an eye axis length measuring mode, the alignment operation is not readjusted, the measurement of the eye axis length can be immediately measured.</p> |
