TECHNOLOGY: Spectacle Lenses Vision Dynamics Expands Pre-Tinted SFSV Line By Andrew Karp Monday, July 18, 2016 12:00 AM LOUISVILLE, Ky.—Vision Dynamics has expanded its line of pre-tinted semi-finished single vision (SFSV) lens blanks to include 1.67, available in 2, 4, 6 and 8 base. The pre-tinted 1.67 and polycarbonate blanks for sport, computer and driving prescriptions integrate easily in conventional and digital surfacing lines. Vision Dynamics’ proprietary colorization process applies a uniform density layer on the front surface of the blank and includes a hard coat. Surfacing does not affect the color layer, so the finished lens has consistent color performance. “Tinting 1.67 and poly lens blanks has always been a difficult process for optical labs,” said John Dippold, president. “With permaTINT, we eliminate the production issues associated with tinting in a traditional dye tank, such as blotching, inconsistencies from hard coat variations and light or dark centers. Labs experience a reduction in overall breakage and improve service time by not losing the lens in the final step of the production process.” The 1.67 product is available in grey C, brown C and green-gray 15; the polycarbonate product is additionally available in orange, blue, rose and yellow. Custom color matching services are also available. akarp@jobson.com