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Note: You can select more than 1 Addon in the Addons Field Simply by clicking on the the 2nd Available addon options. IE: You could choose "Crizal Alize" as the first "Addon" and then click on "Scratch Coating" as the additional "Addon".
Eye Information
Once you filled out the Basic Information about the lens, you will notice that the "Eye Information" pane expands and allow you to enter more data about the Rx.