What type of lenses do I need?
When you buy lenses online, every online seller claims that they give you a great deal or the best lens. You need to be very careful and actually equipped with some basic knowledge about lenses. Wrong lens can make your life miserable!
Full frames:
For prescriptions from -1.00 to +1.00 use CR-39 or Poly
For prescriptions from -3.00 to +3.00 use Poly (cheaper option) or Hi-index 1.67
For prescriptions from -3.00 to -6.00 and +3.00 to +6.00 use 1.67
Rimless/semi-rimless frames:
For prescriptions from -3.00 to +3.0 use Trivex or 1.67 (Trivex and 1.67 will not crack, chip or spider web)
For prescriptions from -6.00 to +6.00 use 1.67 (You can use 1.67 for the whole diapason
This guidance will guarantee you the best aesthetically pleasing look and optical quality.