For many when they get a pair of sunglasses, subscription glasses or readers they immediately look at the style. Maybe it’s rimless or maybe it’s plastic. All are important factors when looking for and choosing a pair of glasses.
Also important though to consider is the lens coating and no, not every lens is coated the same way! So lets take a little bit of a deeper dive:
Invisible to the naked eye, UV or Ultraviolet coating on lenses provides protection for your eyes from the sun. Overexposure of UV lights can cause a variety of eye diseases such as cataracts and could even potentially lead to blindness. The majority of sunglasses are coated with UV coating, except for poly-carbonate and they have a property within the material that doesn’t require UV.
With anti-reflective coating placed on glasses lenses, reflections are greatly decreased. This coating also improves the efficiency of the glasses, as less light is lost. This type of coating also makes the eyes of the wearer more visible. Featured in the popular Oxygen frames, glasses with anti-reflective coating is usually the best solution for people that sit in front of the computer as well as night driving. That is because it increases light transmission through the lenses, which can provide the wearer with the clearest vision possible.
For those that are hard on their glasses, you may want to look for a pair that includes an anti-scratch coating. While these are very effective for lenses in prescription glasses, particularly glasses for children, it can be applied to any type of glasses. In this situation, the lenses are dipped into a silicone-based solvent. Once it cures, there is no tinting or coloring left behind that can damage the optics of the lenses. It should be known though that this type of coating isn’t 100% scratch proof but can assist in preventing minor scratches.
Understanding the types of coatings that can be applied to your glasses can greatly assist in choosing the right pair of glasses. The more educated you are, the better choices you can make.