Dr. Hertle is a retired clinical pediatric ophthalmologist, administrator and investigator.

He has served as Chief of Pediatric ophthalmology at multiple Children’s Hospitals and as an international visiting Professor. He was principal investigator on a number of NIH-funded research projects including studies on the treatment of strabismus, nystagmus and amblyopia, receiving over 2 million dollars of research funding. An avid teacher and publisher, Dr. Hertle has written 2 textbooks, multiple chapters with over 260 refereed publications and almost as many abstracts, editorials, reviews and invited lectures. He currently serves as Executive Committee Member for WSPOS, Editor-In-Chief of Paediatric Ophthalmology and Strabismus, Journal of WSPOS, and reviewer for multiple journals.

On a more personal note, Dr. Hertle and his wife, Gloriann who now live in the Philadelphia area have two married children, Jessika, 39 and Jamie, 43 and four grandchildren. He is also a youth ice hockey coach and has spent over 50 years in ice hockey as a player, coach and sometimes team physician for many youth, collegiate and high school hockey teams in Ohio, Pennsylvania, and Maryland