Near Vision Test
1. Lower the Near Vision rod.
• The Add boxes are highlighted.
• Both apertures are open.
• Phoroptor head converges to 15.75 in. (40 cm).
Note:
The NearBright automatically illuminates when the Near Vision rod is lowered.
2. The Card Illuminator light has two intensity levels. Adjust the light by pressing the button on the un-
derside of the Card Illuminator.
3. Turn the
CONTROL KNOB
to adjust power in ±0.25 D increments.
4. When the Near Vision test is completed, raise the Near Vision rod. The Add boxes are no longer ac-
tive and the Add power is removed from the Phoroptor head.
Note:
If the Add data fields are activated and the Near Vision rod is not lowered, or if the Near Vision
rod is not raised after completing the test, “Convergence” appears at the top of the screen.
Performing an Exam
(continued)
55
16243-101 Rev. G
Содержание VISUTRON 900 Touch
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