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Medical Forum / General / Vision / August 2007Make tinted lenses from transparent
Hello I have polycarbonate lenses with crizal-alize treatment. Is it possible to tint them now so to make them become sunglasses lenses? What is the normal procedure, do opticians buy already-tinted lenses or do they tint transparent lenses just before cutting and mounting them? TIA > Hello > I have polycarbonate lenses with crizal-alize treatment. Is it possible > to tint them now so to make them become sunglasses lenses? no. > What is the normal procedure, do opticians buy already-tinted lenses or > do they tint transparent lenses just before cutting and mounting them? either way may be possible depending on lens material, coatings etc. > TIA >> I have polycarbonate lenses with crizal-alize treatment. Is it possible >> to tint them now so to make them become sunglasses lenses? [quoted text clipped - 5 lines] > > either way may be possible depending on lens material, coatings etc. So the problem in my case is the crizal-alize? tnx > So the problem in my case is the crizal-alize? the coatings are a problem, but the most fundamental problem is that you simply can't tint finished lenses that are made of polycarbonate. plastic lenses can be tinted much easier but having the coatings on them would affect uptake of the dye. |
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