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Aspheric optical resin lens 40mm
Vision lenses are 400UV rated
this could avoid the wrong operation of the finger shaking
non-prescription clear lens
Blue Light Blocking Glasses - Clubmaster (2 Pack) Color:Blue/Red Aspheric optical resin lens 40mmWhat is blue light? Blue light has a very short wavelength, and so produces a higher amount of energy. Studies suggest that, over time, exposure to the blue end of the light spectrum could cause serious long term damage to your eyes. "Nearly 70% of people experience digital eye strain due to prolonged use of electronic devices." The Vision Council. Teddith Blue Blocker Lenses are virtually clear lenses made with a special blue light blocking polymer