transitions

Transition lenses, also known as photochromic lenses, are eyeglass lenses that automatically darken when exposed to sunlight and lighten when indoors or in low light conditions. These lenses contain special molecules that react to ultraviolet (UV) light, causing them to darken and protect the eyes from harmful UV rays.

When transition lenses are exposed to UV light, the molecules within the lenses undergo a chemical reaction that causes them to darken. This darkening process helps to reduce glare and improve visual comfort in bright outdoor conditions. The lenses can darken to different levels depending on the intensity of the UV light, so they can adjust to various lighting conditions throughout the day.

When transitioning from outdoors to indoors or in low light conditions, where there is less UV light, the lenses gradually lighten back to their clear state. This allows for clear vision without the need to switch to a different pair of glasses or sunglasses.

Transition lenses offer convenience and protection by eliminating the need to carry and switch between multiple pairs of glasses. They provide continuous eye protection from UV rays, which can help prevent eye damage and reduce the risk of developing conditions such as cataracts or macular degeneration.

It is important to note that transition lenses may not darken as much in the car, as most car windshields have built-in UV protection that blocks a significant amount of UV light. Additionally, the speed at which transition lenses darken and lighten may vary depending on factors such as temperature and the specific brand of lenses.

Overall, transition lenses provide a convenient and practical solution for individuals who require prescription eyeglasses and want the added benefit of sun protection without the need for separate sunglasses.