Statistically, the average pupil distance for adults ranges from 57 mm (2.25 inches) to 72 mm (2.83 inches). What is the average pupillary distance in adults?īecause each person has a different face shape, the specific pupil distance varies from person to person. Therefore, the measurement of pupil distance should be as accurate as possible. If there is an error, it will make your eyeglasses tired or cause discomfort and eye strain. It is best to measure the pupil distance accurately. This is usually separated from the "grid" part of your prescription, in which the doctor writes out the main prescription information. Your PD number will be in the "PD" or "pupil distance" section of your eyeglasses prescription. There is no reason to walk around with inaccurate glasses when it is so easy to get this number. A pupillary distance measurement is necessary for properly fitting your eyeglass lenses. Pupillary distance is used to determine where you look through the lens of your glasses and should be as accurate as possible. Why measure your Pupillary Distance (PD) is important?Įvery set of the prescription lens has an “optical center,” which is determined by pupillary distance. This measurement is used when preparing to make prescription eyeglasses, it is different from person to person and also depends on whether they are looking at near objects or far away. Your PD is an important part of your prescription because it shows exactly which part of the lens you look through. Your pupillary distance (PD) is the distance between the centers of your pupils. The average pupillary distance range for adults is 57-72 mm and for kids is about 43-58 mm. Sometimes, the prescription will identify the distant pupillary distance and the near pupillary distance in more detail, indicated by "Dist PD" and "Near PD", respectively.Ĥ. Generally, the first two digits indicate the right pupillary distance and the second indicates the left pupillary distance.ģ. On your prescription, there may be two numbers separated by a "/" at your pupillary distance. Your pupillary distance is usually found at the word "PD" on the prescription form.Ģ. How to find Pupillary Distance (PD) on my prescription?ġ. Once you've got your PD measurement, input the numbers in your cart and you're good to go. Repeat the process again to make sure the measurement is right.ĥ. Use the number that lines up with your right pupil. Let your friend repeat the process on your left eye by measuring the distance from your left pupil to your right. To be certain of the result, let your friend measure a few more times to make sure your measurement is accurate.Ĥ. The number that lines up with your left pupil is your PD.ģ. Measure the distance from your right to your left pupil. Let your friend hold the ruler up to your right so the zero end lines up with your pupil.Ģ. Look straight ahead with both eyes open facing your friend. How to Measure Pupillary Distance (PD) With My Friend's Helpġ. * You also need to measure the distance from two pupils to the center of nose respectively to make sure that if you have two PDs(OD & OS). Close your right eye and note the reading directly over your left pupil. Make sure you print our PD ruler (pupillary distance ruler) in advance. To measure your own Pupillary Distance (PD), position yourself approximately 8 inches (20cm) away from a mirror.Ĭlose your left eye and align the ruler’s zero to the center of your right pupil. How to Measure Pupillary Distance (PD) Myself There are two ways to measure your pupillary distance, one is to measure it yourself and the other is to have a friend or family member help you measure it. Don't worry if your glasses prescription doesn't include your PD, we can show you how to measure it by yourself. You'll need to know your PD (Pupillary Distance) if you want to order glasses online from ABBE Glasses.
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