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Introducing Photochromic Orthogon II
ARCHIVAL ITEMS
advertisement
Bausch & Lomb; Optical Index
North America: USA
November 1975
paper
overall: 254 mm x 184 mm

Advertisement aimed at practitioners promoting a brand of photochromic lenses, excerpted from an issue of an American optical journal. Printed in black and white on one page only, illustrated with a photograph and technical diagram of a 25mm segment bifocal lens.


2020.5/48

Gift of Mr David Randall, FCOptom, 2016



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