1. Use a ruler that has millimeter measurements. You can also use a ruler with centimeter measurements and simply times the result by 10 to get your millimeter measurement.
2. Put the glasses on your face and adjust them so that they sit comfortably.
3. Stand about 8 inches (20 cm) away from a well lit mirror with your face parallel and square to the mirror.
4. Align the ruler's zero (0) measurement to the lowest point at the bottom of your lens, keeping it exactly vertical. Make sure you are measuring from the bottom of the clear lens, not the bottom of the frame (see graphic above).
5. Stare straight ahead and read the millimeter line that lines with the center of your pupil. This is your segment height measurement for these frames.
6. Repeat these steps at least 3 to 5 times to get an accurate and consistent measurement. Make sure your head and the ruler do not move after lining up the zero (0) measurement with the bottom of your lens until you note your measurement. Ask a friend to help if you are having trouble.
Our customer's service is but a phone call/email away, we are standing by to assist you in every way. We will match any price for the same quality glasses.
As always if you need our help we are but a call away at 866 217-5878, 9 a.m.–7 p.m. PT daily or Text 213 769-8009 or emailing us