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1. Eye height mark: indicates the height that patient’s eyes should be placed
2. Stage fixation lever: for fixating stage
3. Movement indicator lamp: indicates whether the device power is turned on
4. Display monitor: indicates measurement screen and movement state
5. Printer: printer for printing out measurement results
6. Measurement button: button pressed on to measure
7. Joystick (Operation lever): lever for moving object lens to the front and back, left and right and up
and down