![]() Millimeter Ruler: This can be found at most stores that carry school or office supplies.The ruler method for obtaining your PD is quick and easy. The Ruler Method for Finding Your PD Total Time: 10 Minutes | Total Cost: $0 We’ve got you covered with three quick, straightforward ways to do the PD measurement yourself. ![]() It does not store any personal data.While it may seem confusing at first, obtaining your pupillary distance on your own is easy. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. While you can visit an eye doctor to ask them to measure your pupillary distance, you can measure the distance on your own at home by using a pupillary distance app with PDCheck frames. Binocular PD’s can be used for people with lower prescriptions as it usually will not induce the eye strain or other symptoms. Monocular PD’s are used for progressive lenses and bifocals to ensure that the centers are as perfect as possible. Monocular PD is more accurate because your eyes may not be equally centered, and the monocular PD can adjust for this imbalance. The other is the monocular PD which is measured from the center of one pupil to the center of the bridge of your nose. One is the binocular PD where we measure between the two pupils. There are two types of PD’s that are measured. Sometimes it is a vague sense that something is wrong with their glasses. In my practice, some patients will complain that they “just don’t feel right”. ![]() ![]() If you have a high prescription and the wrong PD these symptoms are often much worse. The wrong PD can induce eye strain, fatigue, headaches and blurry vision. If your pupil distance does not match where the centers of your pupils are, your vision can be affected– Like wearing someone else’s glasses! This measurement is absolutely necessary to achieve precise vision. When you get glasses made, the pupil distance measurement is taken to ensure that the lens center is in line with your pupil center. The images we see focus through the pupil center onto this bulls-eye. You can think of the focusing of what you see like a target with a bull’s-eye in the middle. If you think about the structure of the eye, the pupils are in the center to direct light onto the center of the retina. At night, our pupils dilate to let more light in so we can see well. They appear as black circles in the center of the colored part of our eyes, called the iris, and it is actually a muscle that opens (dilates) and closes (constricts) to let more or less light into our eyes. The pupils are in the center of our eyes. Why do you need this number to order glasses? Truth is, without this number, your glasses will not fit you correctly and you will likely experience blurry vision and headaches. If you’ve ever ordered glasses online, you are probably even more familiar with this “PD measurement”, and may have even attempted to measure it yourself at some point. If you have ever purchased eyeglasses you have probably heard of the measurement of the eyes called the pupillary distance (PD).
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