In this video, measuring your pupil distance is explained.
When a pair of glasses are made, you want to make sure that the optical center of each lens in placed directly in line with each pupil. This insures that you have the very best vision, no discomfort or headaches.
The PD or Pupil Distance measurement is usually written on your prescription at the time of your eye exam. Most adult PD are between 60 and 65 millimeters with the average being about 63 millimeters.
In lower prescriptions you can often estimate the pupil distance. In higher prescriptions, the exact measurement done professionally would ensure your lenses are perfectly aligned for your eyes. It’s a simple and quick measurement to take and can be done in less than a minute.