Patent ID: 9028066
Filing Date: 2015-05-12
Classification: A61B

Abstract:
1. An ophthalmic apparatus including (a) an optometric unit configured to acquire examination information of an eye to be examined, (b) a base having a supporting member for determining a holding position of the eye to be examined, and (c) a moving unit configured to move the optometric unit relative to the holding position, the apparatus comprising: an operation unit configured to output a signal to control an operation of the moving unit in accordance with a manipulated value of an operating rod so as to adjust a position of the optometric unit relative to the holding position; a manipulated value detection unit configured to detect the manipulated value of the operating rod; a position calculation unit configured to calculate the position of the optometric unit relative to the holding position based on a difference between coordinate values of index images on a cornea of the eye; and a control unit configured to, when the manipulated value detected by said manipulated value detection unit is a first manipulated value within a predetermined range, move the moving unit by a fine motion operation corresponding to the signal, and when the manipulated value is a second manipulated value outside the predetermined range, move the moving unit by a coarse motion operation of moving the moving unit at a speed higher than that in the fine motion operation corresponding to the signal, wherein when the position of the optometric unit calculated by said position calculation unit relative to the holding position is closer to the holding position than a predetermined reference position, said control unit (a) allows moving the moving unit in any direction in response to a first signal corresponding to the first manipulated value input from said operation unit and (b) stops moving the moving unit in a direction in which the optometric unit approaches the holding position in response to a second signal corresponding to the second manipulated value input from said operation unit.