/ /

  • linkedin
  • Increase Font
  • Sharebar

    Sunwear and the science of light

    How new lens technology enhances your patients’ visual experience


    Science meets sunglasses

    The old-school way of designing sunglass lenses was to spend some time at the tinting stations trying to come up with colors that appeared pleasant and were also comfortable to look through. Not too dark, not too light, and do you like gray or brown? Maybe green? This system was reasonable for producing lenses that suited the basic need of sunglasses—reducing the amount of light reaching the eye—but did not allow for the higher performance and protection that is now possible with technical advances.

    By knowing the science and properties of light, optical engineers and scientists can design sun lenses that maximize performance, enhance vision for specific activities, and protect our eyes from damaging radiation. For example, in the last few years a number of products have entered the market advertising HEV-blocking properties. With the aging population, if we have products that can reduce levels of macular degeneration, that will have great value to our society by reducing blindness and vision impairment requiring additional caregivers.6,10 Better still, what if that lens also reduced haze and blur, provided greater clarity of vision, enhanced color definition, and came in an impact-resistant material?11 Wouldn’t you (and your patients) want that?

    A great example of just such a sun lens is the Costa 580 lens. Besides absorbing 100 percent of UV to 380 nm, these polarized lenses feature multi-patented color-enhancing technologies for brighter colors and increased clarity, absorb the highest amount of HEV of lenses in its class (100 percent to 425 nm), enhance “good” blue colors, enhance green at peak sensitivity (555 nm), filter out harsh yellow light (580 nm), and enhances red and green colors. Other examples of lenses with color enhancing properties include Maui Jim’s PolarizedPlus2 and Serengeti’s 555NM in addition to newcomers Smith ChromaPop and Oakley Prizm. 

    Old technology meets new technology

    While the science of light will continue to advance as we learn more of how light behaves and how our visual system perceives light, it is great to know that we already have products in hand to give our patients better visual performance and protection than ever before available.


    Renato Cappuccitti
    Renato Cappuccitti is the director of sales for the optical division of Costa Sunglasses.

    1 Comment

    You must be signed in to leave a comment. Registering is fast and free!

    All comments must follow the ModernMedicine Network community rules and terms of use, and will be moderated. ModernMedicine reserves the right to use the comments we receive, in whole or in part,in any medium. See also the Terms of Use, Privacy Policy and Community FAQ.

    • [email protected]
      Thanks for sharing this informative post. Protecting your eyes from solar radiation is a must. Long term excessive exposure to these harmful UV rays has more serious effects. Therefore, from applying sunscreen to protect your skin from the harsh rays of the sun, be sure to protect your eyes by wearing sunglasses with additional UV protection to avoid eye damages. To protect your eyes or skin, you need special care and more tips. For more information you can visit elsunglasses.com over the web.

    Optometry Times A/V