What does 53 16 on glasses mean? For If you look at your frame, for example, you’ll see three numbers separated using a dash. on The inside of your frames, such as 53-16-140. These Numbers Help the optician choose the right frame for you based on your head size and facial features. All These three numbers are measured in millimeters, (mm).
What does mm mean on sunglasses? The Eye size number measures the width, measured from bridge to lens, of the lens in millimeters. The The distance between the lenses and the bridge width is measured in millimeters. And The third number refers to the length of the temple measured in millimeters.
What does It means that your PD is too small to fit in a frame. We Expect the pupils to be slightly closer to the center of the lense than to the outside of the frame. If You have a small PD around 40 You will need a frame that has a smaller PD.Try it! on glasses A PD of 60 will make your eyes almost cross-eyed.
How How do I know my PD status? Hold A ruler against your brow. Close Your right eye should align the ruler’s 0mm with your left pupil. Look Now, close your left eye by moving straight ahead. The Your PD is the mm line that runs from your right pupil to the center.