Spex Expressions High Definition Vision Center Optometrists Spex Expressions High Definition Vision Center Visit Website 2570 DeKalb Avenue Sycamore, IL 60178 (815) 758-1039 (815) 756-1396 (fax) Facebook About About Spex Expressions is a family owned and operated eye care center based in Sycamore, IL. Our optometrists & staff take great pride in helping our patients improve their vision and live healthy lives.