Selecting a lens material mainly depends on the strength of the prescription. For mild prescriptions (less than +/-2.00), polycarbonate works well. For moderate prescriptions (less than +3.00 or -6.00) and high prescriptions (above +3.00 or -6.00), 1.67 or 1.74 high-index lenses are recommended.
We STRONGLY recommend polycarbonate lenses for the following: active people (i.e. athletes), those under age 18, those with only one functioning eye or with serious eye disease, and those working in law enforcement or with machinery. However, these glasses are not intended to be a substitute for sports safety eyewear or occupational safety glasses.
All lenses include a scratch-resistant coating (NOT scratch-PROOF) with a one-year warranty. All lenses also include UV400 protection. An optional but beneficial coating is the anti-reflective/no-glare coating (basic and premium options available), which is a clear coating placed on lenses to help reduce glare and reflections, resist smudges and dust, and improves the appearance of lenses especially in moderate to high prescriptions.
Lens Tints and Transitions:
All of our eyeglass frames can be made into prescription (or non-prescription) sunglasses with the addition of tint or Transition lenses. Most popular tint colors are dark gray or dark brown, and help reduce sunlight glare, but are not recommended for use at nighttime.