posEYEdon Diagnostic Lens Calculator

See below instructions for a successful diagnostic fit.

Instructions

Select the flat and steep radius and eccentricities for each eye.

When a value is selected, the border will turn gray.

When all 4 boxes are populated, the suggested color coded Diagnostic Lens number and corresponding parameters will be displayed at the bottom.

If the Estimated Initial Center Clearance is a negative number, bearing is expected on the steepest lens and you may want to consider a Custom Stable lens.

Two women outdoors making funny faces; one with silver hair in a pink top, holding her hands to her face with fingers extended, creating glasses, and the other with light brown hair in a black and white checkered dress, pulling her hair and gritting her teeth.

Need Further Assistance?

Click below to email the Valley Contax Team, or call (800) 547-8815.

Available Monday through Friday, 5:30 a.m. to 5:15 p.m. Pacific time.

Email the Professional Service Team