Ask the Expert- Chang Reaction

National Keratoconus Foundation is pleased to host Chang Reaction, a monthly broadcast where Dr. Clark Chang, OD will offer his expert opinion about all things keratoconus. An active author, researcher, and clinician, Dr. Chang is an in-demand speaker for eyecare professionals.  In 2020, Dr. Chang was named “Top Doc” by the NKCF in recognition of his outstanding care to patients with keratoconus.     

 Dr. Chang is a fellow of the American Academy of Optometry. After focusing on ocular disease management in his residency program, Dr. Chang further trained at The Cornea and Laser Eye Institute in New Jersey to complete a Cornea and Contact Lens fellowship during which Dr. Chang devoted his research efforts on corneal crosslinking and care of patients with keratoconus. 

Currently, Dr. Chang is the Director of Specialty Contact Lenses on the Cornea Service at Wills Eye Hospital in Philadelphia. He is also part of the Medical Affairs team at Glaukos, which manufactures the only FDA approved crosslinking device and riboflavin solutions for the treatment of progressive keratoconus  

On the first day of each month, NKCF will release a new 20-minute episode of Chang Reaction.  He will be joined by Mary Prudden, Executive Director of NKCF, and the occasional guest to offer advice, insight, and answers.  

If you have a keratoconus-related question, use the form below.  Each month NKCF will select a few to answer during the broadcast.

Here is my Ask the Expert question: (250 word limit)

  • This field is for validation purposes and should be left unchanged.

Please note Chang Reaction is an informational and educational broadcast. Neither Dr. Chang nor NKCF can provide individual medical consultations.  If you have specific concerns about your diagnosis, treatment or outcomes, please contact your eye doctor. 

Accessibility