SPORTS VISION BLOG SERIES PART 3
Written by: Leesa Nesty
To begin this week, we are presenting Part 3 in our blog series by Doctor Gary Nesty, Solar Bat owner. As we stated in Part 2, there are many important factors to consider when purchasing the correct pair of sunglasses for yourself and your chosen sport. Dr. Nesty is passionate about enhancing your visual performance and uses his expertise to design lens tints and frames which help you to perform at your best. Also, by utilizing the wisdom and knowledge he shares, you are better able to make informed and intelligent decisions when purchasing your sunglasses.
We hope you enjoy this post from Dr. Nesty. As the weeks unfold, we’ll continue to have updates from the doc. Be sure to stay tuned!
SPORTS VISION PART 3
By: Dr. Gary Nesty
I want to address polarization in this, the third, of a series of blogs aimed at visual performance in your chosen sport. There is a lot of misinformation regarding lens polarization and hopefully after reading this blog post you will have a better understanding enabling you to make a more informed decision when purchasing sunglasses.
Some sunglass companies are making, or have made, the statement that their lenses have 100% polarization. If they are referring to their lenses having the most polarization possible for a given tint, then their statement is misleading but true. The simple fact is that 100% is simply not attainable in today’s technology. Simply put, the darker the lens tint, and by that I mean the lower the light transmission, the greater the polarizing efficiency or percentage of polarization.
Another misunderstanding is the quality of polarization in photochromic lenses. In the USA a lens has to have 50% polarization to be called polarized. I have tested lenses that have slightly over 50% polarization and that small amount of polarization is not useful. Photochromic polarized lenses, lenses that darken with the level of light intensity, have polarization that is linked to the tint at its lightest or highest light transmission level. The lenses will darken as the exposure to UV light intensifies but the polarization does not increase incrementally. These lenses do not work well for fishermen. As a matter of fact, the amount of polarization properties of the group of lenses is barely noticeable.
It is true that performance in many sports, and fishing is a great example, can be improved by a lens that has both darker and lighter tint properties. This is the reason I developed the double gradient polarized lens tints. I was awarded a USA patent on the double gradient tints and the lens design affords a darker tint gradually transitioning into a lighter tint and both tints have maximum levels of polarization. With a tilt of the head the wearer can adjust to varying levels of light intensity IMMEDIATELY.
I hope this information will help you make an informed and intelligent decision when purchasing your next pair of sunglasses.
Posted by Mandy Shephard on March 17, 2014 in Solar Bat® Blog.