What is glasses pd

Shopping For. Don't worry, we have you covered. This article and our video tutorials will help you learn everything you need to know about pupillary distance, how it relates to your prescription, and how to measure it. To skip ahead to specific topics, click any of the below links:. What is PD? How do I know my pupillary distance? Can I just guess my PD? What is single and dual PD? What is the average pupillary distance?

My PD is 32 and the frame's PD range is from 58? When you are ready to measure your pupillary distance, download our special ruler here:. Download Now. Pupillary distance , sometimes referred to as pupil distance or just PD, is the distance between the center of each pupil and the bridge of your nose measured in millimeters. Pupillary distance is essential for crafting prescription glasses because it helps us know where to place the center of your vision on your lenses.

Two ways: You can measure it using our special ruler You can obtain it from your optometrist You may not have realized, but each time you purchased glasses from an optometrist, they measured and used your PD to craft your lenses. If you are ordering eyeglasses online , you may need to measure your pupillary distance, or PD, yourself.

Keep reading to learn how. Simply stated, pupillary distance PD is the measurement of the distance between your two pupils, and it helps make sure you eyeglasses will fit and align correctly with the center of your eyes. This alignment and how the glasses are positioned on your face is important when comparing the function of glasses used for seeing things that are far away versus seeing things that are close to you.

Eyeglasses that are not fitted with the correct PD measurement can lead to concerns like:. If there is someone who can help you, it might be easier to have someone else measure your PD for you. If you need multifocal lenses, you should also measure the individual distances from the center of each pupil to the bridge of your nose.

Be sure to look straight ahead while taking the measurement. You can also cut a piece of paper or cardboard and mark the center of your pupils, then measure that distance if you are having trouble using a ruler and mirror.

A study showed that some websites offer technology that will measure your PD for you. There are apps or programs to take a photo of your face and measure your PD that way. You can ask your eye doctor to include your PD measurement on your prescription, or if you don't have it, here's how you can measure it yourself. Don't have a pair of glasses handy? Stand about 8" away from a well-lit mirror. Grab your small ruler in one hand. Have your pencil and paper handy. Look straight ahead into the mirror and position the ruler over the bridge of your nose.

Starting with the right eye, line up the zero end of the ruler at your pupil; measure the distance from your right to your left pupil.

The millimeter number that lines up with your left pupil is the measurement you want. That number is your PD. Jot it down. Just to be sure, measure a few more times to make sure you get the same number. You want it to be accurate. Have your friend hold the ruler up to your right so the zero end lines up with your pupil.

Measure the distance from your right to your left pupil. The number that lines up with your left pupil is your PD. Try it a couple times to make sure your measurement is accurate.

Have your friend repeat the process on your left eye by measuring the distance from your left pupil to your right. Use the number that lines up with your right pupil. That's your PD. Do a couple tries to make sure the measurement is right. Once you've got your PD measurement, fill in the numbers in your cart and you're good to go.

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With Affirm, make 3 interest-free payments every two weeks with zero hidden fees. The PD number indicates exactly which part of the lens you look through; therefore, the PD number is important for every type of prescription lens, including single vision glasses. How to order glasses online How to read prescription Lens index Pupillary distance PD PD Ruler Frame sizes Frame and face shapes Men's face shapes Glasses for oval faces Glasses for square faces Glasses for round faces Glasses for heart shaped faces Glasses for diamond shaped faces Glasses for triangle shaped faces Sunglasses for oval faces Sunglasses for square faces Sunglasses for round faces Sunglasses for heart shaped faces Sunglasses for diamond shaped faces Sunglasses for triangle shaped faces.

Pupillary distance PD. Reviewed by : Dr. Matthew Miller, OD on May 13th, Measure PD yourself 1.