Instructions for Use (continued)
Prism Testing (continued)
Vergence Testing or Fusion Range Measurement - Near
Measure vergence for near vision using the following steps:
1. Lower the reading rod to converge the Phoroptor.
2. Press the PRISM button, or touch PRISM.
3. Select VERGENCE in the menu bar at the bottom of the screen.
4. Follow the steps for measuring distance vergence as described in the Vergence Testing or
Fusion Range Measurement - Distance section (previous section).
Note: Prism values at Blur, Break and Recovery are saved as near vision measurement values.
Note:
If the reading rod is lowered during a Vergence test, the test restarts as a new test.
88 16241-101 Rev. D
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