For all clear lens prescriptions orders, the standard material is CR39. Felix Gray offers the option to upgrade to 1.67 High Index lenses. High Index lenses are thinner and lighter than plastic lenses, making them optically superior. This allows us to offer the highest quality prescription lenses to all of our customers at an affordable price.
For all amber lens prescription orders, we use 1.56 Mid Index lenses, making them 15% thinner than standard lenses.
All kids prescription glasses are made with polycarbonate lenses for safety and comfort. Polycarbonate lenses are virtually shatterproof, 10 times more impact-resistant and 20% thinner and lighter than standard plastic lenses. Ideal for running around carefree on the playground!