Vision Twenty-One, Inc. provides administrative services to managed care entities. The company manages routine vision and medical/surgical eye care programs through contracts with managed care organizations and other third-party payors. It operates its managed care business under the brands Block Vision, Block Vision of Texas, MEC Eye Care, ESAN (Eye Specialists of Arizona), and VIPA (Vision Insurance Plans of America). As of December 31, 2000, Block Vision and Block Vision of Texas provided services in 21 states. Vision Twenty-One's contracts with its clients cover either routine vision alone or a carve-out of medical surgical, which includes routine, primary, and tertiary care. The company......