Hi-Index and Polycarbonate Lenses
Hi-Index and Polycarbonate Lenses
PLASTIC VS.
HI-INDEX LENSES
Hi-index lens material reduces lens thickness, making these lenses more comfortable and better looking by minimizing the size of visible lens edges for nearsighted wearers and reducing the magnified “bug eye” appearance associated with farsighted wearers. Essilor offers a variety of hi-index 1.67 and 1.74 lenses that are thinner and lighter than plastic—like select Eyezen™ lenses, which are available in hi-index materials.
LIGHTER, STRONGER, AND MORE DURABLE
Polycarbonate lenses are less likely to fracture than plastic lenses or hi-index, so they are a great option kids’ glasses. Essilor’s polycarbonate lenses are 20% thinner, 30% lighter, and 12x more impact resistant than standard plastic lenses. Anti-reflective treatments—such as Crizal Sapphire® 360°—can be added to Essilor’s polycarbonate lenses.
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† For EyezenTM+ designs 1, 2, and 3. Ask your eyecare professional what’s best for you.