Transitions lenses, also known as photochromic lenses, are described as prescription lenses that “transition” from clear lenses to colored sunglass tints when the lens is exposed to UV rays. This type of lens is regarded as a valuable upgrade over more traditional eyeglass lenses as they offer the wearer the combination of both sunglass and eyeglass lenses. Clarity Vision of Apex offers the full line of Essilor products including the ever popular Transitions + Crizal + Varilux lenses.
 

In transition lenses, photochromic compounds have been built into these lenses, and it is the UV rays from the sun that trigger these compounds to transition or darken. When out of sunlight, these lenses will change back to a clear-state through what is known as a type of thermal process. Beyond these basic processes, different environmental conditions will have a significant impact on how photochromic eyewear performs.

The transition lenses are a suitable option for individuals that prefer to wear the same prescription glasses when working both outdoors and indoors without having to worry about changing lenses when going in and out. However, when it comes to this versatile type of eyewear, there are a couple of key factors to consider.

One of the first considerations with the transition lenses has to do with the fact that because they are activated by UV light rays, they are unable to transition when driving a car. This is the case because most car windshields and car windows block UV rays which are responsible for activating the lenses from changing from clear to brown, green or grey.

One of the other important considerations about photochromatic lenses is that in higher temperatures, the lenses will be less dark. This has to do with a thermal effect known as “temperature dependency” which will stop the photochromic lenses from reaching true sunglass-darkness in extremely hot weather. For those that spend much of their time in very bright or extremely hot conditions, like in the desert or on tropical beaches, the transition lenses may not be the most suitable eyewear option. Traditional prescription sunglasses may be a better idea in these hotter environments.
 

THE PROS AND CONS OF TRANSITION LENSES

Eyeglasses that feature photochromatic lenses definitely offer convenience, but before deciding on this lens type, here are advantages and drawbacks associated with photochromic glasses.
 

The Pros Of Transition Lenses

• They offer convenience in the way that one pair of glasses can be used under the majority of circumstances whether outdoors or indoors.

• These lenses provide continuous UV protection, which means that they act as effective sunglasses and protect the eyes when outdoors.

• They are available in a variety of colors and styles and are able to meet the prescription requirements for most people. For those who require progressives, bifocals or shatter-resistant lenses, or any other type of specific requirement, there are a variety of photochromic lenses available. In fact our brand partner, Essilor, offers a lens package that offers 3 huge benefits in one lens with the following: Photochromatic lens technology to adjust to variable lighting conditions and block UV as well as Blue Light; Crizal to reduce reflections and glare; and Varilux progressive lens technology to provide clear vision at any distance.