How Do I Measure My PD?
Your optometrist or ophthalmologist may have included your PD measurement on your prescription. This measurement is normally outlined underneath the sphere, cylinder, axis and ADD columns on your prescription. Please note that the OD (right) measurement will always be listed first and the OS (left) measurement will follow; whether it is horizontally (side by side) or vertically (up and down) listed on your prescription. A PD can be listed in one of two ways:
- A combined number. For example, it may state a PD of 62. If this is the case then you will have to divide the number by 2 and that will give you a PD for each eye. You will then use those numbers when providing your PD measurement during your order. In this case it would be 31 for your right eye and 31 for your left eye.
- Two separate numbers. For example, it may state 29 and 31 (or 29 and 29). If this is the case then you will use those exact numbers when providing your PD measurement during your order.
How To Measure Your Own PD
If you do not have access to your PD measurement then you can follow the steps below and take it yourself. We do recommend having a friend assist you in order to gain the most accurate measurements.