You can either measure it yourself or use an Android App or an iPhone App to measure it for you.

Please review our helpful videos (scroll to the bottom of this page) on how to read your prescription or you may upload it when you order your glasses.

One or both of your eyes may not have a value for cylinder or axis.

In that case, simply enter 0 as the value for these.

An ADD value typically indicates the need for bifocal lenses.

If you wish to use this, select 'Bifocal' for your prescription type.
It will be a line bifocal.

If you would rather have a pair of single vision lenses, select 'Single Vision' for the prescription type and ignore the ADD portion of the prescription.

Select 'yes' for prism values, and enter the values as written on your prescription.

Please take special care that you select the correct direction of the prism for each eye.

If one eye has no value for prism, simply enter 0.

This is normal, simply select 'No' for your 'prism values' on the ordering page.

Unfortunately, this means that your prescription is out of the range we can process, and we cannot make eyewear in your prescription.