Clark Chang

OD, MSA, MSc, FAAO

Dr. Clark Chang is the host of popular podcast show "Chang Reaction". He is also Director of Specialty Lenses at Wills Eye Hospital (Cornea Service), and Director of Clinical Services at TLC Laser Centers. After residency training, Dr. Chang completed a 2-year cornea fellowship under guidance of Peter Hersh, MD. With over a decade of research experiences in corneal cross-linking (CXL) and other advanced corneal treatments, Dr. Chang publishes extensively in keratoconus management, innovative contact lens technologies, and modern refractive surgeries. Dr. Chang serves as a keynote speaker in various U.S. and international scientific symposiums. In addition, he is an advisory board member at International Keratoconus Academy (IKA), Gas Permeable Lens Institute (GPLI), and Optometric Cornea Cataract and Refractive Society (OCCRS).