Everything You Need to Know About Pupillary Distance

Pupillary distance is the distance between the pupils of your eyes. There are two different distances, the far pupillary distance, and the near pupillary distance. These distances can be measured with several methods. Learn how to measure pupillary distance and take an accurate measurement at home.


Calculating pupillary distance is essential in selecting prescription glasses for your eyes. This measurement must be accurate, or you’ll have incorrect glasses. There are two main types of PD: distance and near. Distance PD is needed for prescription eyeglasses, while near PD is used for reading glasses.

You can measure your pupillary distance with a virtual meter or a digital camera. You should repeat these steps at least three times to get an accurate measurement. However, if you don’t have a virtual meter, you can perform the measurement using a traditional method. The traditional method involves using a digital camera and millimeter ruler. It would help if you had someone take a photo of your pupils.

The pupillary distance, also known as interpupillary distance, is a measurement of the distance between the two inner parts of the eye. It helps ensure that the lens is positioned correctly. The closer the lens is to the center of your pupil, the smaller the pupillary distance will be.

The distinction between far and near pupillary distances

The difference between the distance between the center of the far and near pupils is essential for wearing corrective eyeglasses. The distance must be accurate for prescription glasses to be effective. Using a guess can lead to incorrectly prescribed eyeglasses. There are two basic methods for measuring pupillary distances: monocular and binocular. The monocular method involves measuring the distance from each pupil’s center to the nose’s bridge.

The 95 percentile of adult males in the United States measures the distance between the pupillary surfaces. For women, the range is between 65mm and 53mm. 

If you measure the distance between the near and far pupil, you’ll find that the distance between the near and far pupillary distances is about three to four millimeters. If you have a friend, have them measure the distance between your eyes. To get an accurate measurement, you should take a few measurements and ensure they’re consistent. If you are measuring your own, ensure you’re at least eight inches from the mirror.

Measurement at home

If you are interested in getting the right prescription for your eyes, you should know how to measure pupillary distance (PD) at home. There are several easy ways to measure PD, such as using a ruler and a mirror:

  1. Make sure you stand in front of a mirror at least 8 inches away.
  2. Place the ruler against your eyebrow. Keep your head straight.
  3. Position the 0 mm line on the ruler above the center of the pupil of the left eye.
  4. Open your left eye and look into the mirror.

You can use a tape measure if you do not have a ruler. This will help you get an accurate reading. Alternatively, you can ask a friend to help you out. To get a good reading, you should have your friend stand next to you with your right eye closed. Then, line up the beginning of the ruler with the center of your left eye. Once you have this measurement, you can tell how many millimeters you need to measure your pupils.

The normal pupillary distance range

The normal pupillary distance range for both men and women is between 58mm and 68mm. The range varies a little, but for the most part, it is the same. A doctor can check your pupillary distance by holding an object close to your nose and watching for the change in distance.

Your eye care provider can also measure your pupillary distance for you. Some will do this for free, while others may charge a nominal fee. You can use a millimeter or centimeter ruler to measure your pupillary distance. To do this, stand 8-10 inches in front of a mirror with your head straight.

The distance between the pupils is called the pupillary distance. It can be measured using different methods, but the most common is using a small millimeter ruler, also known as a PD stick. Some optical professionals also use a corneal reflex pupillometer to measure the distance between the pupils accurately. A few mobile phones and web apps can also measure the distance.

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