Changeover lenses have appear a long way in the many years I've bought them. I are already an optician with the past 33 decades. The only lenses readily available After i initial started out out ended up Image grey glass. Over the years the improvements to mild sensitive lenses are already spectacular. When Picture gray lenses are still used to this day, They're large, and could shatter under certain situations.

The a single advantage of Changeover lenses are the weight. They may be built in polycarbonate and trivex lenses. They are really incredibly impression resistant in these two materials. They are really great for Children, provided that you put them in These two products. Another main benefit is not really having to have around a pair of sunglasses. I have on mostly my Changeover Eyeglasses. I'm confidant of getting supreme Sunlight defense whenever I am in the outdoors.

They guard in opposition to ultraviolet rays and the brightness in the Sunlight. I am quite Sunlight delicate, and typically they are sufficient.

Due to the fact no lens built is ideal, you will discover certain disadvantages to those lenses. They nevertheless Do not get as dim in incredibly sizzling weather. They are product of an organic and natural activator, and heat diminishes their sensitivity to light-weight. It does not hassle me a lot of, but I do get problems concerning this. The main grievance I get is they do not activate powering the windshield of a car or truck. Given that They are really activated through the ultraviolet rays, cars and trucks since the eighties have colored contact UV safety of their windshields. And lastly they don't remove the reflective glare. Such a glare can be extremely debilitating. When daylight bounces off an item it will come at you at lower angle. Only polarized lenses can right this situation.