Near Vision Addition - Ametek Reichert Phoroptor VRx User Manual

Instructions for Use
Adjust Values
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Near Vision Addition

1. Lower the Near Vision Rod and Card to activate the Near Vision Addition (ADD) value field
using one of the following two methods: Lowering the Near Vision Rod and Card automatically
converges the Phoroptor, highlights the ADD data fields in the screen, and darkens the Acuity
Chart screen.
Using the Screen
• Touch the ADD box in the main display area of the screen to activate the Near Vision
Addition value field for both eyes.
• Touch the box to the left or right of the ADD box to activate the Near Vision Addition value
field for the selected eye.
Using the Keypad
• Press the B button, and then press the ADD button to activate the Near Vision Addition value
field for both eyes.
• Press the R or L button, and then press the ADD button to activate the Near Vision Addition
value field for the selected eye.
Note: Make sure the Reading rod is lowered when measuring near vision addition. If the rod is
not lowered, an error message of "Convergence" displays at the top right of the screen
and a "Beep" sounds.
Note: The data fields for the eye you are measuring are highlighted in white.
Note: The Near Vision Addition (ADD) field you are changing is highlighted in yellow.
2. Verify that you lowered the Near Vision Rod and Card.
Note: You must lower the rod and card to isolate the measurements for Near Vision Addition.
3. Turn the CONTROL KNOB to adjust the Near Vision Addition value by ±0.25 D increments.
Note: Turn the CONTROL KNOB to the right to increase plus (+) Near Vision Addition value
and to the left to decrease plus (+) or add minus (-) Near Vision Addition value.
Note: Press and turn the CONTROL KNOB (at the same time) to adjust the Near Vision
Addition value by ±1.00 D per click stop.
4. Press the CONTROL KNOB to save the value and exit Near Vision mode.
5. Raise the Near Vision Rod and Card to remove the plus (+) Sphere power lenses. The projector
screen is illuminated again. If the user selected a chart while in Near Vision testing mode, that
chart is displayed.
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Figure IU-17, Near Vision Addition Active Boxes
16241-101 Rev. D