OVERVIEW


UltraVision has created this useful tool to help you find the optimal fitting contact lens using K Readings and spectacle prescription. The calculator below was designed specifically for the Avanti contact lens.
Simply input the flat and steep K readings, the spectacle Rx, HVID and BVD into he calculator below and click "Calculate". The contact lens prescription will then be displayed.
To calculate a contact lens prescription for UltraVision lense please click HERE For help fitting KeraSoft, please click HERE

       
Finding it difficult to measure HVID and BVD?
Send us an e-mail for a free Avanti ruler at info@ultravision.co.uk
Spec RX Input

Lens Details
Flat K
Steep K
Spec Sph
Spec Cyl
Spec Axis
BVD
HVID
    
    
    
    
    
    
Contact Lens Prescription

Bcr
Td
Sph
Cyl
Axis