Vision Dynamics’ permaTINT™ Line Expands to Include 1.74

Louisville, Kentucky, June, 2025 — Vision Dynamics is pleased to announce the expansion of its             pre-tinted permaTINT line with the introduction of 1.74 index semi-finished single vision (SFSV) lens blanks, now available in 2.25, 3.50, 6.75, and 8.50 base curves.

Designed for sport, computer, and driving prescriptions, Vision Dynamics’ 1.74, 1.67, Trivex®, poly and CR-39 pre-tinted SFSV lens blanks integrate seamlessly into both conventional and digital surfacing lines. The company’s proprietary colorization process applies a uniform density layer to the front surface of the blank and includes a hard coat. Because the tinting is built into the surface layer, surfacing does not affect the color, ensuring consistent edge-to-edge color performance in the finished lens.

“Tinting a lens in a 1.74 material is a difficult process for optical labs, and usually yields very poor results,” said John Dippold, President of Vision Dynamics. “With permaTINT, we eliminate the production issues associated with tinting in a traditional dye tank. This includes 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 new 1.74 permaTINT lens blanks are initially available in a Grey C color option, offering a visible light transmission (VLT) of 15%. With fixed color density across the entire Rx range, permaTINT lenses are ideal for free-form progressive lenses, particularly in materials that are traditionally difficult to tint.

“Adding pre-tinted permaTINT saves time, simplifies workflow and improves service,” added Eric Lindquist, National Account Manager. “It is a great product solution for solving a universal problem.”

For more information about the permaTINT product line or to place an order, please visit www.visdynlab.com or call our Customer Care line at 888-900-5503.

Vision Dynamics Laboratory, a division of Vision Dynamics LLC, specializes in glass lens surfacing, premium photochromics and pre-tinted performance lenses. Vision Dynamics is an authorized distributor for all major glass lens manufacturers and our lens line is further enhanced with the availability of custom photochromics, pre-tinted products, sport lenses and other customized product lines.