Transistion Lenses have been around for some time now. In fact, the term “Transition Lenses” has become common usage now for all lenses that darken up to help with the sun. This article will walk you through the options available for sun-adaptive lenses.
Corning Glass came out with Photochromatic lenses in the 1960’s. The lenses are made of glass that darkens in the presence of outdoor light. The lenses come in brown or grey and darken to a fairly dark tint when outdoors or in the car. Since the lenses are made of glass, they can be heavy, especially for high prescriptions. They are very durable however, and have great optics.
Transition Optical first produced Transition Lenses in 1990 from their Florida laboratory. Over the years, they have expanded globally, producing several generations of photochromatic lenses. Transistion lenses are made in a variety of plastic materials, including polycarbonate which is the lenses recommended for children because of their safety.
Since they are made of plastic, the lenses are lighter and will fit in more frame options than glass lenses. However, most transistion lenses will not darken up when you’re in the car. The lenses darken in the presence of Ultraviolet (UV) which is nearly completely blocked out by the glass windows of the car. In response to this issue, Transitions Optical came out with a new product for driving that will darken inside the car, but the tradeoff is that the lenses remain slightly tinted indoors as well. For more information on Transistion lenses, visit their site by clicking here.
What about Polarized Lenses?
Polarized lenses block out all reflected light, also known as glare, therefore creating a more comfortable and clear view. Up until recently, photochromatic lenses were not polarized. However, in May of 2012, Transistions Optical will release it’s newest product, their Vantage Lens, which will be clear indoors but darkens outdoors into a polarized lens.
So, there are plenty of options. Be sure to review your vision needs with your eye doctor and optician so that you can be advised on the best solution for you.