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Photochromic lenses are lenses that darken when exposed to a certain wavelength of light (usually UV light). When no longer illuminated by this light source, it returns to its original transmittance and becomes clear. This is a great solution for those who hate constantly switching between reading glasses and sunglasses.

Model Number: ZP-RG074-PH
Size: 51-19-140mm
Frame Material: Metal + TR90
Lens Material: PC
Frame Color: Black/Silver ; Black/Gold 
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