Photochromic dyes for use in the manufacture of ophthalmic lenses, lens blanks, contact lenses and contact lens blanks

'blank':12,18 'contact':13,16 'dye':2 'len':11,17 'lens':10,14 'manufactur':7 'ophthalm':9 'photochrom':1 'use':4

Spectacle lenses, eyeglass lenses, contact lenses, sunglass lenses, optical lenses, ophthalmic lenses, lens blanks, contact lens blanks, eyeglasses, eyeglass frames, sunglasses, photochromic eyeglass lenses

'blank':14,17 'contact':5,15 'eyeglass':3,18,19,23 'frame':20 'len':13,16 'lens':2,4,6,8,10,12,24 'ophthalm':11 'optic':9 'photochrom':22 'spectacl':1 'sunglass':7,21

GEN 8

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