PDR-7000 Operation Manual
When the cross is shifted from the center, correct it as follows:
Appearance of chart
Phoria Correction
Esophoria
Turn the dial clockwise to add the BO prism
powers until
the cross comes to the center of the circle.
Exophoria
Turn the dial counterclockwise to add the BI
prism powers until the cross comes to the
center of the circle.
Left eye
hyperphoria
Press . Turn the dial clockwise until the cross
comes to the center of the circle. (Add BU to
the right eye and BD to the left eye.)
Right eye
hyperphoria
Press . Turn the dial counterclockwise until
the cross comes to the center of the circle. (Add
BD to the right eye and BU to the left eye.)
Use or instead of the dial for fine adjustment.
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