1.67 Blue Block Photochromic Lens HMC/SHMC

Photochromic lens change color in the sunlight. Typically, they are clear indoors and at night and change to grey or brown when exposed to direct sunlight. There are other specific types of photochromic lens that never turn clear.

Blue block lens is a lens that prevents blue light from irritating the eyes. Special anti-blue light glasses can effectively isolate ultraviolet and radiation and can filter blue light, suitable for watching computer or TV mobile phone use.

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1.67 photochromic blue block optical lens
Model:	1.67 optical lens
Place of Origin:	Jiangsu, China
Brand:	SETO
Lenses Material:	Resin
Lenses Color	Clear
Refractive Index:	1.67
Diameter:	65/70 /75mm
Function	Photochromic&Blue Block
Abbe Value:	32
Specific Gravity:	1.35
Coating Choice:	SHMC
Coating color	Green
Power Range:	Sph: 0.00~-12.00; +0.25~+6.00; Cyl: 0.00~-4.00

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