Publisher's Synopsis
Excerpt from Supplement No; 2 to Ophthalmic Lens Catalog, (Edition 1915): Complete Revision of Prices, Lenses, Frames, Magnifiers and Readers, September 1, 1917
Following an expressed desire on the part of our distributors and to insure more accurate focal results, we have discontinued Standard and Rimless thickness, confining the production of our Centex lenses to one thickness only, viz: to fit, within the limits of powers and axes, from to 1% strap for 000 eye size.
White Centex Double Convex and Concave lenses will be made in oval (45 x 35. 5 mm) and round (42 mm) sizes only. White Centex Peri scopic Convex and Concave lenses will be made in oval (45 x 35. 5mm) and round (47 mm). Powers above 8. 00 D are made m 42 mm size only.
Optical glass blanks will be supplied as heretofore. Prices quoted on request.
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