I had the same glasses made twice, same prescription, but different lens thickness...?

Question

I had progressives made at costco which were only temporary. I just asked for the cheapest lens they had, no add ons. Then I had another pair with the same prescription made at lenscrafters. Again I asked for the cheapest, no add ons. The lenscrafters ones are about 10% thicker. What is up with that?

Answer 1

Probably just a difference in how they were ground.

1 Lab may have ground them to a 1.2 mm center and the other to a 1.4 center...or something similar...so that would slightly increase the overall thickness.

If there is a difference in your frame sizes, that could also affect the thickness...a wider frame will add more edge thickness....if they are minus power lenses...

Answer 2

different brands of lenses come in diff thicknesses.