Dr. Clark Chang is both Director of Cornea Specialty Lenses at Wills Eye Hospital - Cornea Service and Director of Clinical Services at TLC Vision. After finishing his residency, he further completed a fellowship in cornea and contact lenses. He has taken part in numerous clinical studies on corneal cross-linking and has authored extensively on keratoconus management involving both surgical and/or contact lens innovations.
He is an advisory board member at International Keratoconus Academy (IKA), Gas Permeable Lens Institute (GPLI), and Optometric Cornea Cataract and Refractive Society (OCCRS). In addition, Dr. Chang is also the immediate past president of New Jersey Academy of Optometry and the current vice chair of the membership committee at the American Academy of Optometry.