Visionworks of America, Inc. (formerly Eye Care Centers of America) is an American company which operates or manages 700 optical retail stores in 40 U.S. states and the District of Columbia. The company was incorporated in 1988. It is based in Downtown San Antonio, Texas, and has about 5,600 employees. Stores operate under eleven different trade names, including "EyeMasters," "Visionworks," "Vision World," "Doctors VisionWorks," "Dr. Bizers VisionWorld," "Dr. Bizers ValuVision," "Doctors ValuVision," "Hour Eyes," "Stein Optical," "Eye DRx" and "Binyons". As of June 2013, the eleven aforementioned different trade names are consolidating into a single entity and will all operate under the Visionworks name. Visionworks of America is a subsidiary of HVHC, a Highmark Inc. company. Its former parent company, ECCA Holdings Corp., merged with Pittsburgh-based HVHC in 2006, resulting in Eye Care Centers of America Inc. becoming a wholly owned Highmark subsidiary. ECCA had 385 stores, in 36 states, at that time. Its largest chains are EyeMasters, with about 160 stores, and Visionworks, with 140 stores.All stores offer designer and exclusive brand frames, lenses, sunglasses and accessories along with leading technology in vision correction. Comprehensive service offerings include contact lens dispensing, in-store labs, which provide one-hour service on many prescriptions at nearly all locations and doctors of optometry at or next to every store. Visionworks also sells contact lenses online at visionworkscontacts.com.