varilux ipseo lens - fitting tips
step 1 - take monocular measurements
Use a Corneal Reflection Pupillometer (CRP) for the most accurate measurement Ensure your CRP is properly calibrated. If you require assistance with CRP calibration, ask your PAL sales consultant, or call the technical services department of your PAL supplier
step 2 - pre-adjust the frame
After placing the frame on the patient, ensure the frame has positive face-form. Viewed from the side, the frame should also have approximately 8-1/2” of pantoscopic tilt. Ensure that the nose pads (if the frame is so equipped) sit flush on the sides of the patient’s nose and do not hold the frame front at an excessive distance from the eyes. Properly adjusting the nose pads will minimize vertex distance, which will improve the performance of any PAL. Finally, ensure that the frame is not crooked, and the patient is comfortable with the fit
step 3 - measure fitting height
Use a ruler to measure from the lowest portion of the frame to the centers of the patient’s pupils. Transfer the measurements to the demo lens using a felt-tip marker, and verify the measurement Select the progression length of 14, 16 or 18
step 4 - verify cut-out
Using the manufacturer-provided cut-out chart, ensure the fit will allow the lenses to completely cut out. If the lenses will not cut out, choose another frame
step 5 - verify proper fabrication and assure proper fit
When dispensing the new lenses, leave the progressive markings on the lens. Place the completed eyeglasses on the patient and readjust the frame – if necessary. The fitting cross of each lens should appear directly in the middle of the patient’s pupil. Remember, when ordering Varilux Ipseo, you must include the H/E ratio, the stability coefficient and patients initials (up to four) that will be engraved on the lens. |