Clark Y. Chang, OD, MSA, MSc, FAAO, FSLS

Dr. Clark Chang is the Director of Specialty Contact Lenses in Cornea Service at Wills Eye Hospital (Philadelphia, USA) and Medical Affairs Manager at Glaukos.

He is also the host of the popular podcast show “Chang reaction.” Upon completing his residency program at Salus University, Dr. Chang further completed a 2-year Corneal and Contact Lens fellowship. Additionally, Dr. Chang was involved in the pre-clinical trials that later led to the FDA approval of corneal cross-linking in 2016.

In recent years, he has been honored as The ”Top Doctor of 2020” by the National Keratoconus Foundation, the 2021 recipient of AOA’s “Luminary Award for Distinguished Practice,” and the “World’s Top 100 Doctors” in 2022.