Take a straight on Face Shot wearing your glasses.
Relax your face so your glasses stay in position.
Keep your face perpendicular with the camera.
Take the photo at arms distance, about 24 inches.
Focus on a distance object while take the photo.
That all there is to it!
After your frames arrive to us, we will get all the measurements we need to make replacement lenses.
No need to learn how to take confusing measurements yourself.