How to determine your diopter needs:

First, print this page on your printer. You cannot use this chart online to determine your diopter value. Computer monitors vary greatly in their resolution and visual print size. Click on "Print Chart" then print from your browser (File > Print).

Second, once you print out the eye chart, measure it. This chart is exactly 3-1/2 inches wide. If your printed chart measures any other size, you might select the wrong diopter.

Finally, read the chart at a distance of 14 inches WITHOUT GLASSES OR CONTACT LENSES. To find the correct strength, read down until the text becomes difficult to read. To the right of the line that is difficult to read, you will see the diopter value. You will need to remember this value when you order your iMagic makeup glasses. Please note: This chart is provided as a guide only. For better accuracy please see your eye care professional.