• What Is Pupillary Distance?

    What Should I Know? What is pupillary distance? Pupillary distance, also known as “PD,” is the distance between your pupils, and the measurement that is necessary to ensure the correct positioning of your lenses within the frame you have chosen. Your PD is essential to making your glasses and important because it greatly affects the way you see comfortably through your lenses. How do I Obtain my PD? When you get your eye exam done, your eye care provider will typically measure your PD for you. When asking for a copy of your prescription, you can also ask for your PD. However, only a few states in the U. S.…

  • How to Measure Your Pupillary Distance

    Do you know your PD? For glasses wearers, knowing your pupillary distance (or PD) is very important. Your PD is the distance between the center of each pupil and it serves an important purpose. With a correct PD, you can ensure that your lenses will be correctly positioned in their frame. At 39DollarGlasses.com we offer two informative ways to measure your pupillary distance. First, we recommend using our PD ruler to get an accurate measurement. Find the PD ruler here.  Next, watch our video tutorial to get a step-by-step visual guide on measuring your pupillary distance!