Answers related to 'want-to-make-spectacles-what-is-progressive-lens--advantaged'
Asked by deepu , 27 May '08 11:53 am , 1 answers
Progressive lenses, also called progressive addition lenses (PAL), progressive power lenses, graduated lenses, no-line bifocals, and varifocal lenses,... more
Answered by Avinendra Singh, 27 May '08 01:08 pm
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