These Ultra violet rays form free radicals upon absorption by the retina. The free radicals oxidize the tissues surrounding it, destroying your photoreceptors. The condition is named photic retinopathy and can occur within seconds of staring straight into the sun. Our experience is essential to us because it helps ensure that we can give you…
Plastic photochromic lenses use organic photochromic molecules to attain the reversible darkening effect. These lenses darken when exposed to ultraviolet light of the intensity present in sunlight, however, not in artificial light. In the current presence of UV-A light (wavelengths of 320–400 nm), electrons from the glass match the colourless silver cations to create elemental…
For more driving needs, one design of photochromic lens is Transitions Drivewear, also made by Transitions Optical. They are polarized photocromic adaptive lenses which are made designed for use when driving. They are made to darken and clear with changing light conditions when inside a vehicle. In the initial PhotoBrown and PhotoGrey products made by…
Studies show they are likely to facilitate ground level ozone formation and increase photo-chemical smog. They are persistent in landfills, usually do not readily evaporate and would stay in the atmosphere. Other applications, including polycarbonate sheets, could have the anti-UV layer added as a special coating or perhaps a coextrusion for enhanced weathering resistance. The…
From work meetings to birthday parties started being hosted online. People can experience computer vision syndrome or digital eyestrain from looking at a screen too often and for long periods. As we are all spending more time on screens nowadays, it’s even more important to focus on the impact of blue light. Just like you…
Consult your eye care practitioner to learn more. When you are indoors and out of the UV light, another chemical reaction occurs. The lack of the UV radiation causes the molecules to “snap back” with their original shape, resulting in the loss of their light absorbing properties. In both directions, the complete process happens very…