Center for Sight and Hearing... Individual Needs. Individual Solutions. The Center for Sight & Hearing has served northern Illinois and southern Wisconsin since 1962. We specialize in helping individuals with vision loss and/or hearing loss to live more independent lives. The Center offers professional service to promote personal and social independence. For correspondence or to make a donation please send to P.O. Box 5944 Rockford, IL 61125. Call 815-332-6800 now for more information about our low vision and/or hearing loss services.