Presbylite® Bifocal
Diagnostic Fitting Guide
1. Choose the closest appropriate diagnostic lens from your fitting set based on the patient's mean K reading and the Base Curve/Diameter Selection Chart.
2. Check lens position, speed of return after blink, and fluorescein pattern.
3. If lens-to-cornea relationship is not adequate, choose a different diagnostic lens.
4. If lens fit is appropriate, over-refract using trial frame.
5. Order lens by curve, diameter, distance power, and add power.
