How Crizal works
Most people rely on sunglasses to protect their eyes from harmful UV rays. With Crizal, Essilor found a solution for UV protection in a clear eyeglass lens.
In 2012, Essilor developed a rating system that measures how well a clear lens shields UV rays. The effectiveness of the lenses is reflected with an E-SPF: eye-sun protection factor.
The average E-SPF provided by clear lenses ranges from 2 to a maximum of 25. Tinted lenses, including sunglasses, have an E-SPF of 50+. Crizal lenses with UV protection have an E-SPF of 35 — 10 points higher than the most protection provided by the average clear lens.
The trademarked Crizal coating is applied to lenses to protect against smudging and scratching. Ordinary lenses have a hard coat only, are easily scratched and offer little to no UV protection. Lenses equipped with the Crizal coating stay cleaner and provide sharper, safer vision.
Crizal lenses have received the Seal of Recommendation by the Skin Cancer Foundation for their UV protection. They have also received the Good Housekeeping Seal, which reflects a product’s trust and satisfaction.