85
3. On the touch screen, press [CCdual] to change it into Dual Cross Cylinder Mode.
4. From the patient’s view, the Dot-Group Chart is separately
shown divided as two.
▶
If the left one is seen clearly, turn the dial counterclockwise (+ direction.)
▶
If the right one is seen clearly, turn the dial clockwise (- direction.)
▶
If the patient says there is no differene, finish the test.
5. Press [A] or left/right button to estimate the distorted vision axis.
Press [C] or left/right button to estimate the circumference power.
[Figure 10-13] Dual Cross Cylinder Test (Ditorted Vision Axis Test)
Digital Refractor EDR-9000
Summary of Contents for EDR 9000
Page 1: ... EDR 9000 Digital Retractor Operation Manual ED R 9000 Digital Retractor ...
Page 2: ......
Page 11: ...9 Appendix Hardware Specification 115 Digital Refractor EDR 9000 ...
Page 64: ...62 Operation Operation Manual Manual Figure 9 2 Adjustment of 1 st step S C A Value ...
Page 71: ...69 Figure 9 14 Far Distance Vertiacl Coincidence Aniseikonia Test Digital Refractor EDR 9000 ...