• PD stands for pupil distance, this is the measurement between your eyes from pupil to pupil.
• Pupil distance can be expressed in two ways.
  • Single PD is the total distance between your pupils.
  • Dual PD is the distance from the bridge of your nose to your pupil on each side. A dual PD measurement will be two numbers.?
• Don’t have a PD measurement?
  • You can…Contact your optometrist.

Single Vision Distance lenses have the same focal power over the whole lens. These are the most commonly prescribed lenses, providing visual correction at long distances. Most individuals who wear glasses before the age of 40 will usually be prescribed single vision Distance lenses

Single Vision Near lenses have the same focal power over the whole lens. These are the most commonly prescribed lenses, providing visual correction at close distances. Most individuals who wear glasses after the age of 40 will usually be prescribed single vision Near lenses