1. Distance PD and Near PD—Enter the patient’s measurements in half-millimeter increments in the appropriate fields. PDs must be entered in monocular form.
2. Height—Enter the measurement in half-millimeter increments. For a single vision Rx, the Height field is automatically populated with the optical center. By default, the optical center value for a single vision lens is pre-populated after the “B” measurement is entered and is equal to ½ the “B” measurement. It may be edited if necessary. For a progressive Rx, the Height is the fitting height. For other multi-focal Rx, the Height is the segment height.

Note: If you need to make changes to the Rx simply edit the fields that should be changed.