The Importance of Pupillary Distance Measurement for Your Glasses

Ordering for prescription glasses whether online or in a shop will require you to give an up to date prescription and pupillary distance (PD) Measurement. The importance of the PD measurement is something most people are not aware of until when they attempt to order glasses online.

What Is Pupillary Distance (PD)?

PD is known as pupillary distance. This is the measurement of the distance between the centers of the pupils of the eyes. It can be done as monocular or as two numbers for each eye and is measured in millimeters. The measurement varies per person and is used to determine where you look through the lens of your glasses. It is done during an eye check-up by an optician and is a vital piece of information needed to make the most comfortable pair of lenses for each user. It is vital to have the option of obtaining the PD, as the PD Measurement is needed to properly center the prescription section of the lenses and to reduce any eye strain issues that would occur from using the wrong PD.

Required Information When Buying Glasses Online

Prescriptions for glasses varies with each person and their different eye problems. However, the PD measurement is always required whether the glasses will be of higher or lower power. It is important to make sure that you have an accurate PD. A wrong PD or as we say in the optical world “out of tolerance,” will cause a situation where you won’t be able to focus your eyes together properly.

Ordering glasses online is easy and saves time. Whether single vision, progressive or bifocal prescription lenses, Optical Lens Lab offers the best possible prices available for a wide variety of impact resistant frames with various styles and materials and of the highest quality. We also offer other services such as lens replacement, where you can change your prescription lenses but maintain your favorite old frame. We currently offer more than 60% discount for many different glasses without sacrificing the quality and style.