PD Measurement Tool

The Pupillary Distance (PD) is the distance between the centres of your pupils. With this measurement we can ensure that the optical centres of your lenses are aligned correctly with your pupils to give maximum comfort and effectiveness.

When you have your eyes tested most opticians will not include your Pupillary Distance(PD) measurement on your prescription. Some opticians will gladly give you your PD measurement if you ask for it, while others won’t give you your PD measurement.

At ThinLenses we have developed a tool that allows you to measure your Pupillary Distance(PD). Once you know your Pupillary Distance (PD) you then have the freedom to purchase all your future glasses from anywhere that you want.

Please complete the form below and one of our friendly team will be able to assist you with your PD measurement.

  • Max. file size: 50 MB.
    Upload a passport style photo of you wearing your current glasses. Please ensure that when taking the photo the camera is at eye level (required).
  • Example photo example measure my pd photo
  • Please enter the lens diameter of the glasses (in mm) you are wearing in the photo. This is usually found on the inside of one of the arms. It is usually the first of 3 digits. example lens diameter
  • If you cannot find these, you can measure this yourself example DIY lens diameter