Optiswiss, the Swiss-based independent lens laboratory, reports that it has recently signed a four-year contract with Santéclair, the French insurance group with 55 affiliated insurance companies. In addition to Optiswiss, Santéclair has signed contracts with Essilor, Zeiss and Nikon. In the French health insurance system, lens manufacturers compete to become suppliers to providers of supplemental insurance, which covers part of the cost of glasses. Only the glasses of the selected suppliers are recommended and subsidized by supplemental insurance. Santéclair is one of the largest providers, insuring more than 10 million people.