Available clues

Index 1.50 — Standard organic lenses made of CR39 material. Abbe value 58 for excellent optical clarity. Standard thickness, economical solution for low to medium prescriptions.

Index 1.56 — Thin, lightweight lenses, compatible with photochromic and sun tints. Good performance-price ratio for medium prescriptions.

Polycarbonate index 1.59 — High impact resistance, recommended for safety glasses, sports, and active wearers. Optimal lightness, integrated UV protection.

Index 1.60 MR-8 — Thin lenses with excellent optical clarity, Abbe value 41. Mitsui Chemicals material, ideal for medium to high corrections with aesthetic requirements.

Index 1.67 — Ultra-thin lenses for strong prescriptions. MR-7 or MR-10 materials from Mitsui Chemicals. Significant reduction in thickness and weight.

Index 1.74 — The thinnest lenses on the market for high prescriptions. MR-174 material from Mitsui Chemicals. Optimal aesthetics for high myopia or hyperopia.