Transitions lenses contain patented photochromic dyes which activate – or darken – the lens when exposed to ultraviolet (UV) rays from sunlight. When the UV light diminishes, the lenses fade back to clear. As outdoor light conditions change, the level of darkness adjusts, creating the right level of tint and allowing just the right amount of light to reach the eye. This action allows Transitions lenses to help protect your eyes from the light you can see – reducing glare, diminishing eye strain and fatigue. This enables you to distinguish contrast more easily.
For the light you can’t see – ultraviolet light – Transitions lenses can help protect your eyes for long-term preservation of healthy sight. It’s important to remember that, no matter how light or dark they appear to be, Transitions lenses are always blocking 100% of eye-damaging UVA and UVB rays. In other words, Transitions lenses provide automatic protection from UV rays in any environment, continually protecting your eyes from the light you can’t see while you enjoy comfort and vision quality in the light that you can see.
Transitions lenses begin to darken the instant they are exposed to UV light. The greater the intensity of the UV rays, the darker the lenses become. The moment UV rays are no longer present the lenses immediately begin to fade back to their clear state. Most wearers report that the adjustment happens so quickly and smoothly, they are unaware of it. However they remain aware of the visual comfort the lenses continue to provide in any light.
Transitions lenses are compatible with virtually all frame styles, including the latest fashion frames. And they’re available in most types of lens materials and designs – from plastic to shatter-resistant materials like polycarbonate and Trivex® materials, and from single-vision lenses to bifocals, multi-focals and no-line progressive lenses. Ask your optician for advice.
Transitions lenses are the first lenses to receive the World Council of Optometry (WCO) Global Seal of Acceptance for Ultraviolet Absorbers and Blockers based on the WCO’s scientific testing protocol. Additionally, Transitions lenses meet internationally recognized standards for UV blockage, including ANSI Z80.3, ISO 8980-3, EN 1836 and AS/NZS 1067.
Trivex is a registered Trademak of PPG Indutries, Inc.