Your PD (Pupillary Distance) is the distance in millimetres between the centre of each eye and is used to line up the centre of the lenses with your pupils.
You will normally find it on your prescription but sometimes it is not provided.
You can measure your PD by following these steps:
Step 1 – Place a simple mm ruler on your nose so that the starting point of the ruler is exactly at your left or right pupil. Keep the scale leveled
Step 2 – Stand in front of a mirror or ask a friend to measure the distance between the pupils while you look straight ahead
Step 3 – Repeat this several times for increased accuracy
As a guideline, most PD values have a range between 57 mm and 65 mm. The average PD for men is 64mm which equals to a monocular PD of 32 & 32 and the average PD for women is 60 which equals to a monocular PD of 30 & 30.
If your optician wrote down your PD, it might be written as 63/61. This means the distance PD is 63 and the near PD is 61. You should enter the distance PD only.
Let us do the work for you - just choose the Scan and Send prescription option when you are at the checkout.