How do I measure my pupillary distance?

To measure your pupillary distance, you can either ask your eye care professional for this measurement during an eye exam or you can measure it yourself at home using a ruler. Stand in front of a mirror and hold a ruler horizontally against your brow. Close your right eye and align the ruler's 0mm mark with the center of your left pupil. Then, without moving the ruler, close your left eye and note the measurement at the center of your right pupil. This measurement is your pupillary distance. It's important to ensure the ruler is held straight and that your gaze is straight ahead to get an accurate measurement.