Transition Lenses
Ophthalmic Transition lenses, also known as photochromic lenses, are eyeglass lenses that automatically change from clear indoors to dark outdoors when exposed to sunlight or ultraviolet (UV) light. These lenses adapt to lighting conditions by darkening in bright sunlight to protect the eyes from UV rays and then return to a clear state indoors or in low light. The darkening occurs due to a chemical reaction in the lens material triggered by UV light exposure. Transition lenses combine the function of prescription glasses with the protection of sunglasses, eliminating the need to switch between two pairs of glasses.
Key Features of Transition Optical Lenses
- Clear vision indoors and automatic darkening outdoors.
- 100% protection against UVA and UVB rays.
- Reduction of glare and eye strain outdoors.
- Convenience and cost-effectiveness by serving as both regular glasses and sunglasses in one.
- Various lens color options (such as gray, brown, and green).
- The darkening speed may vary with temperature; it can be slower in cold weather.
- Some limitations include reduced darkening inside cars due to UV-blocking windshields and possible slight tint indoors for some users.
Overall, ophthalmic Transition lenses provide dynamic light adaptation, visual comfort, and eye protection with seamless transitioning between environments.
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