OPHTHALMIC DEVICE

PURPOSE:To prevent the measuring accuracy from being deteriorated due to a fact that dust, etc., intrude in and adhere to an optical member, and to eliminate the need of maintenance for a long period by constituting the device of a shutter main body for executing a relative motion to the device main body and opening and closing a measuring window, and a driving part for driving the shutter main body. CONSTITUTION:In a state of the time of measurement, a shutter main body 2 is inclined and a measuring window 1a is opened, and the shutter main body 2 abuts on one end 121 of a rib 12 and is energized counterclockwise. When the measurement is finished, a driving part 4 is allowed to slide to the right by pushing a finger against a knob 42 of the driving part 4, and an engaging part 41 is moved to the right. A pin 21 moves relatively in a groove 411 of the engaging part 41, and the shutter main body 2 is turned clockwise. The shutter main body 2 abuts on one end 122 of the rib 12 and covers the measuring window 1a. In the case of executing the measurement again, the driving part 4 is allowed to slide to the left by the knob 42 of the driving part 4, and the engaging part 41 is moved to the left. The pin 21 moves relatively in the groove 411 of the engaging part 41, the shutter main body 2 is turned counter clockwise, and the shutter main body 2 opens the measuring window 1a again.