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!
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
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.