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How To Measure Your Pupillary Distance (PD)

How to Measure Your Pupillary Distance (PD): A Step-by-Step Guide

Learn how to measure your pupillary distance (PD) at home with our easy-to-follow guide. Discover why PD measurement is important for ordering eyeglasses online.

Measuring your pupillary distance (PD) is essential for ensuring that your eyeglasses provide optimal vision correction. PD is the distance between the centers of your pupils, and it is used to align the optical centers of your lenses with your eyes. While an eye care professional can measure your PD during an eye exam, you can also measure it at home. Here’s a step-by-step guide on how to measure your PD accurately:

  1. Stand in Front of a Mirror: Position yourself in front of a mirror with your face at a comfortable distance.

  2. Use a Ruler and a Mirror: Hold a millimeter ruler against your brow, ensuring that the zero mark is aligned with the center of your right pupil. Look straight ahead and have someone else measure the distance to the center of your left pupil. Alternatively, you can use a mirror to measure the distance from the center of one pupil to the center of the other.

  3. Record the Measurement: Once you have the measurement, record it in millimeters. PD measurements typically range from 54mm to 74mm for adults.

  4. Repeat for Accuracy: For accuracy, repeat the measurement a few times and take the average of the measurements.

  5. Considerations for Ordering Eyeglasses Online: When ordering eyeglasses online, it’s crucial to provide an accurate PD measurement. A correct PD measurement ensures that the optical centers of your lenses align with your pupils, providing optimal vision correction.

By following these steps, you can measure your pupillary distance accurately at home. If you have any concerns or difficulty measuring your PD, consult with an eye care professional for assistance.

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