VM REPORTS: Top 50 Retailers Cover Story: VM's 50 Top U.S. Optical Retailers 2008 By Cathy Ciccolella Monday, May 19, 2008 4:00 AM RELATED CONTENT Key Players Ranked By U.S. Sales in Calendar 2007 Lagging Economy Gives Sales Boost To Mass Merchants, Warehouse Clubs Leading Mass Merchants with Optical Departments Top 10 Snapshots Top 50 Optical Retailers Methodology Top 50 Retailers’ Sales Reach $7 Billion Mark VisionWatch Analyzes Total Vision-Care Market VM's 2008 Top 50 U.S. Optical Retailers Report is sponsored by Photo courtesy of iStockphoto ® View 2008 Top 50 Retailers PDF version.