Comment by rcarmo
That is usually for very low prescriptions. Judging by the photos, I don't think you can use those blanks for much more than -2.
That is usually for very low prescriptions. Judging by the photos, I don't think you can use those blanks for much more than -2.
some AR glasses come with built in correction up to -5.00. Beyond that, they recommend correction lens insert, so it can work for more. The built-in correction does not do astigmatism, that will require prescription insert too.