![]() Pupil distance can be represented in two ways – less accurate as one number or more precise as two numbers. It is given in millimeters, and the greater the error in its measurement, the more serious the consequences may be for a person with a visual impairment who wears glasses made on the basis of it. Pupil distance (PD) is, simply put, the distance between the pupils of the eyes. See why this parameter is so important, how it is recorded and how to measure it yourself if an ophthalmologist has not done it for you. And return shipping? Covered.Are you planning to buy new prescription glasses online? In order to spend your money wisely and not to suffer from ailments related to wearing mismatched lenses, you first need to know your pupil distance (PD). Get a full refund, exchange, or credit towards a better pair. ĭitch risky online shopping with the See Better Guarantee. We’ll put you in touch with one of our friendly in-house opticians who can help you build your prescription glasses. An answer to all your questions is at your fingertips, and if you want to chat with an expert, Contact Us. When you shop with us, you’ll find video guides and tooltips throughout the build process as you customize the perfect pair. Once you send us the photo, we can make it life size and determine the PD ourselves. Make sure you're facing the camera straight on, not turned to the side, and keep looking in the distance. Something else you can do is to place a credit-card-sized object on your forehead and take a picture. Your PD will always be written in millimeters (mm). Align the ruler with the center of each pupil and make note of the correct number.If you look closer, your eyes will converge and this can change your PD slightly. ![]() Place a ruler flat against your forehead and look off into the distance, not at the person measuring you. ![]() Grab a friend! Another person helping you will make the measurement more accurate.So if you're out of options, here are some tips to get the most accurate measurement possible. We've given you alternatives, but after all, the title of this blog is about measuring your PD yourself. Tyler notes that Costco especially tends to write your PD on your receipts. Last but not least, check old eyewear receipts as it could even be written down on there. ![]() The nice thing about using an old PD measurement is that it doesn't change once you become an adult, so if you have an old measurement it will probably still be accurate. It may be written on the prescription somewhere. They don't always take your PD since it's not part of a typical eye exam, but sometimes this will yield results. Your PD is something every place needs to make prescription lenses, and if you've gotten glasses with that measurement before you'll already know if it's correct.
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