HOW TO MEASURE YOUR PUPILLARY DISTANCES (PD)

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What is Pupillary Distance?

Pupillary distance (PD) measures the distance between the centers of your pupils. This measurement is used to determine where you look through the lens of your glasses and should be as accurate as possible. The average adult’s PD is between 54-74 mm; kids’ are between 43-58 mm. Your eye doctor will usually measure your PD during an eye exam. However, if it was not given to you, the below 5 steps will help you measure it yourself.

How to Measure Your PD?

  • Stand 8 in. away from a mirror.
  • Hold a ruler against your brow.
  • Close your right eye then align the ruler’s 0 mm with the center of your left pupil.
  • Look straight then close your left eye and open your right eye.
  • The mm line that lines up to the center of your right pupil is your PD.
  • Check out the graphic below for more information and to learn how your friend can help you measure your PD.

Armed with your PD and prescription, you can shop at Zenni to find your perfect pair of glasses.

What Is Pupillary Distance?

PUPILLARY DISTANCE (PD) measures the distance between the centers of your pupils. This measurement is used to determine where you look through the lens of your glasses and should be as accurate as possible.

The average adult’s PD is between 54-74 mm; kids’ are between 43-58 mm.

Pd 62 mmPD = 62 mm If you do not have your PD from your eye doctor, you can measure it yourself with the help of a friend, as demonstrated in this quick HOW-TO-VIDEO, or you can measure it yourself with our step-by-step guide below.

Why Is It Important?

Every set of prescription lenses has an “optical center,” which is determined by pupillary distance. Pupillary distance is used to determine where you look through the lens of your glasses and should be as accurate as possible.

What Is Single Vs Dual PD?

SINGLE PD is the pupillary distance between the center of one pupil to the other, which can be a distance PD or near PD. Distance PD can be used to order any type of prescription glasses except reading glasses. Read below to learn how to calculate near PD for reading glasses.

DUAL PD, or monocular PD, consists of two numbers and is the distance between the centers of each pupil to the bridge of the nose. Dual PD is usually written in the following notation: 32/30. The first number is always the right eye (OD) measurement, and the second number is the left eye (OS).

How Do You Calculate Near PD For Reading Glasses?

PUPILLARY DISTANCE (PD) measures the distance between the centers of your pupils. This measurement is used to determine where you look through the lens of your glasses and should be as accurate as possible.

The average adult’s PD is between 54-74 mm; kids’ are between 43-58 mm.

Pd 62 mmPD = 62 mm If you do not have your PD from your eye doctor, you can measure it yourself with the help of a friend, as demonstrated in this quick HOW-TO-VIDEO, or you can measure it yourself with our step-by-step guide below.