Everyone likes the idea of getting more. The concept of squeezing as much as possible into or out of anything appeals to the value seeker in us all. McDonald’s® figured this out decades ago when the concept of an ordinary value meal no longer satisfied the masses. “Supersize it” became an instinctive add-on to your order of a “number 3 with a Coke.” After all, a meal’s not a meal without 32 extra ounces of soda and enough fries to fill a Fiat, right?
But other that an extra helping of calories and a massive sugar crash two hours later, what’ do you get out of adding and adding and adding? Often, piling on more doesn’t yield much benefit, and can do more harm than good.
Here’s the point where we connect a value meal to a light-reactive lens.
Welcome to the third and final installment of our ultimate guide series on light-reactive lenses. In part one we covered standard photochromics before shifting to extra-active photochromics in part two. In part three we’re going to look at a new and exciting category of light-reactive lenses that only came into existence in October 2018.
In part one of this three-part series, we took an in-depth look at standard light-reactive lenses . In this second installment, we’ll be covering their extra-active associates.
The first photochromic lenses appeared in 1964, and quickly drew interest for their unique ability to darken in sunlight and fade back indoors. However, the first generation of photochromic lenses came with cosmetic and functional barriers – two of the largest being that it took them about an hour to fade and they never got fully clear.
Fast forward more than half a century, and the technology has greatly expanded, as have the types of light-reactive lenses available. Reaction speeds, darkness, clarity, and overall aesthetics have all improved greatly, and there are now four different types of light-reactive lenses available: standard, extra-active, ultra-fast, and polarized.
Light-reactive lenses deliver perhaps the most widespread range of benefits of any lens or enhancement available. From the convenience factor to the visual benefits to the peace of mind of UV and blue light defense, these lenses are a perfect choice for most any patient. But, as is the case in the great balancing act of daily life, there is almost always a yin to the yang.
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