HOW TO MEASURE YOUR PUPIL DISTANCE

WHAT IS PUPILLARY DISTANCE?

Pupillary Distance or PD highlights the distance that originates from the center of one pupil and stretches to another one. It's measured in millimeters and tells the optician where to put the optical centre on each lens. Without it it's impossible to purchase an accurate pair of glasses. Ask your optometrist to include your PD on your prescription, or if you don't have it here's how you can measure it yourself: 

STEPS TO MEASURING YOUR PD YOURSELF:   

1 - Start with a straight “mm” ruler, a pen and a mirror.

2 - While looking straight in the mirror, place the ruler on the bridge of your nose.

3 - Make sure that the start of the ruler is directly below the center of one eye’s pupil.

4 - Hold the ruler (keeping it steady and parallel to the floor); mark the location on the ruler of the other eye’s pupil.

5 - Measure the distance in millimeters between the two marks. That distance will be your PD.

6 - Repeat this process a couple of times to ensure you have an accurate measurement.

In most cases, PD value ranges from 57 to 65 mm, with the most common one being 63 mm. At times you will find PD written as 63/61. In such cases the first value is for Distance PD and the other value 61 is near PD. It is highly recommended to get your PD from your optometrist if you have a high power script.