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Thank you very much Mister drk for your informations, that will helps me a lot,
No I am not a dispensing optician, I an just a student and I am doing a research about how to mountain prismatic...

Thank you very much Mr Mervinek and Mr Robert Martellaro, your precious informations that you have given to me will help me a lot.
but I have a question about the real prismatic lens and not the...

Good afternoon,
Actually I want to make a research about mounting prism in glasses, but I have a lot of difficulties, I tried to visit a lot of libraries in my city, but as I didn't expect, there...