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. Before June 2013, when it began operating under the Visionworks name, stores operated under eleven different trade names, including "Eyemasters," "Visionworks," "Vision World," "Doctor's VisionWorks," "Dr. Bizer's VisionWorld," "Dr. Bizer's ValuVision," "Doctor's ValuVision," "Hour Eyes," "Stein Optical," "Eye DRx" and "Binyon's".