Contacts Advice has developed the most comprehensive prescription conversion charts found anywhere.

Why Create These Charts?

Julie, the found of Contacts Advice once worked in the eye care industry doing contact lens fittings. As part of her job she had to analyze all types of glasses prescriptions and determine from the numbers which contact lens she should start with.

This was time consuming and required several different calculations to be performed. Eventually realizing that there are only a limited number of possible combinations for glasses prescriptions, she decided to create charts that showed the conversion for every glasses prescription combination.

And so Contacts Advice’s Comprehensive Perscription Conversion Charts were born. When Julie went on to create Contact’s Advice (the website), she uploaded them for all to benefit from, as eshe