Measuring Tips for Customizing Free-Form Lenses
Begin offering this premium fitting service to ALL of your patients. The Beauty of Free-Form lens technology is that it allows you to customize the lens prescription to the patient’s eyes for optimum optical clarity and enhanced acuity to his or her highest satisfaction. Measurement must be taken after the
frame has been fitted to your Patient:
1. Measure the Frame Wrap.
(Defaults: Variable and Fixed Designs 5º,
Outdoor Design 15º)
2. Measure Pantoscopic Tilt Angle.
(Default: 10º)
This measurement accounts for the tilt of the spectacle frame front. This measurement will maximize the spectacle lens function.
3. Measure the Vertex Distance. (Default: 12mm)
A critical measurement when the Rx requires high minus or plus corrections (+6.00 – 7.00 D and above).
4. Take Monocular P.D.
Accuracy is a must. Measure from the center of the bridge to the center of the pupil for each eye using a pupilometer.
5. Fitting height.
(Defaults: Variable, Professional and Fixed Designs: 16mm; Outdoor, Drive and Golf Designs: 19mm)
Measure from the pupil center to the frame’s lowest edge.
6. Specify reading or working distance
(Default: 40cm). Doctor should refract for patient’s actual reading distance and this distance should be specified to the lab. Our software will create the right amount of convergence for the near.
Ask your CSC Labs Sales Rep for a Special Free-Form Metric Ruler. If you do not provide measurements, the lab will use computer-generated Defaults (as listed above).
Verify the Rx at the Lensometer using the compensated Rx.
This prescription is modified from the original to enhance acuity based upon
your measurements and the characteristics of the patient’s frame selection
(i.e. Frame Wrap, Vertical Depth, Pantoscopic Tilt, etc.).
