Trillions of photochromic molecules quickly change colour, size and structure when exposed to UV light or temperature increases causing the lenses to darken.
What are the benefits? Mainly convenience, but also added protection, as they shield your eyes from the sun’s harmful UV rays when outdoors. They are available in most lens materials and designs, including high-index, single vision, varifocal and bifocal lenses.
Who are they suited to?
- People with light sensitivity
- Teenagers (as they typically spend longer outdoors than adults)
- People who are beginning to develop presbyopia (age-related long-sightedness)
- Outdoor enthusiasts
- People who continuously move between indoors and outdoors