The Space Between - Measuring your pupillary distance

THE SPACE BETWEEN You've found the perfect pair of glasses on the Internet, but you can't order them because you're missing one vital piece of information: your pupillary distance. With this guide, you can easily measure your PD from the comfort of your home. What is Pupillary Distance? PD = 62 MM 10 20 30 40 50 60 The distance between the pupils of the eyes, center to center, in millimeters. If you are getting single-vision ding glasses, and you are over 40, use your near-vision PD, which is your distance vision PD lowered by 3 mm. Why is it Important? Optical Center Every set of prescription lenses has an "optical center" which is determined by pupillary distance. Measure the Distance Your prescription may tell you your PD. But if the PD is not available, use your friend or a mirror to help you figure it out. Necessary Tools: TT TT and Millimeter Ruler Mirror Measuring Your Own PD 1. Stand 8 in. away from the mirror. 8 in (20 cm) 2. With your face straight, hold the ruler against your brow. 3. Close your right eye and align the ruler's zero to the center of your left pupil. 4. While looking straight, close your left eye and open your right eye. 5. Read the mm line that lines up with the center of your right pupil. This number is your PD. A Few Things to Note: • Measure your PD 3-4 times to assure it is accurate and consistent • Range of Adult PD: 54-74mm Range of Child PD: 43-53mm Having a Friend Measure Your PD You Friend If a friend is measuring your PD, keep both eyes open and have your friend put the zero on the millimeter ruler over the center of one pupil, then measure the distance to the center of the other pupil. Tips When a Friend is Measuring: • Have them crouch / sit while you stand • Look above his / her head at something so they are out of your field of vision. approximately 10-20 ft. away. • Keep your eyes as still as possible. • Do not look at the person measuring! With your PD in one hand and your prescription in another you can save time and money by handling all of your optical needs at Zenni. Brought to You by Z E N N 1° www.zennioptical.com Prescription Glasses from $6.95