What Are High-Index Lenses? A Simple Guide
Key Takeaways High-index lenses are thinner and lighter than standard plastic lenses with the same prescription. They often help people with prescriptions around +/- 4.00 or higher. Higher index numbers, like 1.67 and 1.74, mean slimmer lenses. Polycarbonate lenses suit active kids and outdoor adventures thanks to their impact resistance. An anti-reflective coating can help…







