The sun is the primary source of ultraviolet radiation, although other sources include welding equipment, tanning beds, and lasers. UV protection on your glasses and sunglasses lenses can benefit your eye health. UV radiation can harm your eyes. Any plastic or glass lens can have UV coating added for maximum protection. Reflectix: Reflectix is a multi-layered material that consists of aluminum foil, polyethylene, and insulating bubbles. With a thickness of 5/16 inch, it provides effective RF-EMF radiation blocking capabilities. EMF Paint: For room shielding purposes, EMF paint can be considered. Ultraviolet (UV) radiation is a form of non-ionizing radiation that is emitted by the sun and artificial sources, such as tanning beds. While it has some benefits for people, including the creation of Vitamin D, it also can cause health risks. Our natural source of UV radiation: The sun. Some artificial sources of UV radiation include: Tanning Ultraviolet (UV) Safety│ www.ehs.washington.edu │September 27, 2022 │Page 1 of 7 . ULTRAVIOLET (UV) SAFETY Ultraviolet (UV) light* is electromagnetic radiation with wavelength between 100 nanometers (nm) and 400 nm. UV radiation is invisible to naked eye and are broken down into three main bands (UV-A, UV-B, and UV-C). Ultraviolet (UV) light is electromagnetic radiation that is invisible to the human eye. Its name is derived from the spectrum of electromagnetic waves with frequencies higher than those that humans identify as the color violet. The sun emits ultraviolet radiation in the UVA, UVB, and UVC bands. The Earth’s ozone layer blocks 97-99% of this UV According to their study, the colour of the glass had a huge influence on the transmission of UV radiation. For example, yellow glass allowed the passage of merely 1.3% of the UV radiation [52 Glare protection refers to the portion of sunlight we’re able to see. So all dark lenses come with glare protection as it blocks or reduces part of the visible light. But there’s also an invisible part, which is known as UV light. And our eyes need to be protected against this – even on cloudy days when the sun is only partially visible. After absorbing UVB radiation previtamin D 2 is produced. Its absorption spectrum with a wavelength maximum at 260 nm overlaps the UV absorption spectrum for both DNA and RNA and thus would be able to protect DNA and RNA from photodamage (Fig. 2). 2 When previtamin D 2 is exposed to UVB radiation it is converted to tachysterol 2 which has a UV absorption spectrum with a wavelength maximum at aGNV.

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