Sphere And Cylinder - Maintaining Spherical Equivalent - Ametek Reichert Phoroptor VRx User Manual

Instructions for Use
Adjust Values
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Sphere and Cylinder - Maintaining Spherical Equivalent

You can adjust both the Sphere and Cylinder values simultaneously to maintain the spherical equivalent.
This adjustment is done monocularly and binocularly.
1. Press the C button, or touch C or the data field next to the C on the screen when Cylinder is
already selected. The data fields for the eye you are measuring are shown in white. Both the
Sphere and Cylinder values are highlighted in yellow, indicating they are both active.
2. Turn the CONTROL KNOB to adjust the Sphere and Cylinder values together. A change of
0.50 D in Cylinder power results in a corresponding 0.25 D change in Sphere power. Turning
the CONTROL KNOB to the right increases Plus Cylinder and adds Minus to the Sphere power.
Turning the CONTROL KNOB to the left decreases Minus Cylinder and adds Plus to the Sphere
power.
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Figure IU-15, Sphere and Cylinder Active Boxes
16241-101 Rev. D