GREEN BAY, Wisc.--Pech Optical of Sioux City, Iowa has joined Global Optics, a buying and marketing group for labs. Founded in 1989, Pech Optical is an independently owned wholesale optical laboratory. Since the company’s inception by its president, Robert W. Pech, it has grown from 44 employees to over 260 employees who are responsible for approximately 2,100 Rx orders per day. Pech Optical was ranked the second largest independent lab in Vision Monday’s 2007 Top Labs Report, with estimated Rx sales of $31.7 million. ■