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This tool is specifically designed to work with UltraVision specialist lenses, powered
and unpowered, and a spectacle over refraction to supply the correct final contact
lens power.
Follow the steps below:
• Input the contact lens parameters. If you are using a Plano Trial Lens, just enter
0.00 for sphere and cyl and ignore the axis. • Enter the lens axis adjusted
for rotation.
The method to calculate axis rotation is as follows:
Counter Clockwise Rotation - Subtract rotation from the original power axis (e.g. -2.00 / -1.00 x 180 with 20 degrees counter clockwise rotation = -2.00 / -1.00 x 160)
Clockwise Rotation - Add rotation to the original contact lens power axis (e.g. -2.00 / -1.00 x 180 with 20 degrees clockwise rotation = -2.00 / -1.00 x 20)
• Check the BVD value is correct
• Enter your over refraction result
• Click on "Calculate Resulting Lens”
This will then give you the new contact lens power for ordering
To calculate the new lens prescription for your Soft Avanti Lens please click HERE. For guidance and training
in fitting out KeraSoft range of lenses, please click
HERE
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