WebMD explains how photochromic lenses work, their benefits, and the different types. Learn how they protect your eyes and improve vision in various lighting conditions.
A photochromic lens is an optical lens that darkens on exposure to light of sufficiently high frequency, most commonly ultraviolet (UV) radiation. In the absence of activating light, the lenses return to their clear state.
Photochromic lenses are eyeglass lenses that are clear (or nearly clear) indoors and darken automatically when exposed to sunlight. Other terms sometimes used for photochromic lenses include "light-adaptive lenses," "light-responsive lenses" and "variable tint lenses."
Discover the real photochromic lenses pros and cons. Our guide explains how they work, who benefits most, and if they're the right choice for your lifestyle.
Photochromic lenses, also known as adaptive or “ transition lenses,” are intelligent lenses designed to protect the eyes from bright light and harmful ultraviolet (UV) rays. They provide a “sunglass effect,” which means they darken in bright sunlight and become clear in low light.
Photochromic lenses are eyeglass lenses that are chemically designed to turn dark in bright conditions and become clear again in low-light conditions. Learn how they are effective replacements for prescription sunglasses, but they not might be compatible for all users.
The term “photochromism” or “photochromic” is believed to originate from the Greek words φωτόϛ (photos) and χρῶμα (chroma), which mean light and color, respectively. The photochromism can thus be simply defined as the feature to undergo a reversible change of color induced by light [1].
The meaning of PHOTOCHROMIC is capable of changing color on exposure to radiant energy (such as light). How to use photochromic in a sentence.