Clark Chang, OD, MSA, MSc, FAAO

Dr. Clark Chang is Director of Specialty Lenses at Wills Eye Hospital (Cornea Service), and Director of Clinical Services at TLC Laser Centers. He is also the host of popular podcast show “Chang Reaction”.

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. Given his unique academic, research and clinical background, Dr. Chang is invited to lecture in numerous U.S. and international scientific symposiums.

In addition to serving as adjunct faculty at Salus University, he is also an advisory board member for International Keratoconus Academy (IKA), Gas Permeable Lens Institute (GPLI), and Optometric Cornea Cataract and Refractive Society (OCCRS).


Contemporary Keratoconus Management – Crosslinking and Beyond
Unlocking the Success to Refractive Cataract Surgery