Mark Twain once said, “Everyone talks about the weather, but nobody does anything about it.” In our industry, everyone talks about blue light, but we’re doing something about it. GSRx offers two proprietary solutions that work on different principles and provide different levels of blue light reduction.
PrevaBlue® is an anti-reflective coating with a difference. While it eliminates reflections through most of the visible spectrum, it has a special layer that actually reflects some blue light in the harmful range away from the eye. The blue light reflection peaks at about 460nm, then declines, allowing the frequencies that help regulate the circadian cycle to pass through.
Because it intentionally reflects light in certain frequencies, PrevaBlue® won’t provide the same light transmittance as Infinity® or Infinity Clear Non-Glare, meaning that there will be more residual reflectance. However, it may be a good option for people who want anti-reflection and some blue-light reduction, but don’t want to pay for both.
GSRx’s other blue light treatment, UVhp™, AKA epik™ Blue, works through absorption rather than reflection. UVhp lenses are infused with an substance similar to the melanin in the iris. This approach provides superior blue light control, absorbing 99% of blue light at 400nm, and continuing to absorb a significant percentage of blue light up to 450nm.
Blue light-absorbing lens materials sometimes get a bad rap because some products have a pronounced yellowish-brown tint that people with good taste find unattractive. However, UVhp lenses are virtually clear, delivering the best combination of protection and cosmetics available today. UVhp is available in Polycarbonate, 1.60, 1.67 and 1.74, with CR, Trivex® and Tribrid™ coming soon. GSRx can’t do anything about the weather, no matter how much we’d like to – we’re in the desert, after all, and it’s July. But with PrevaBlue® and UVhp, we can do something about blue light for you and your patients.