Sidney Chang, MD

Sidney Chang, MD was raised in Cumberland, Maryland where he graduated #2 in his class and played running back for Bishop Walsh High School. His undergraduate studies were completed at Cornell University (Ithaca, NY) with a degree in Computer Science and he also graduated from Weill Cornell Medical College (New York, NY) for medical school. He completed his internship at New York Hospital-Queens (Flushing, NY) and his residency at the University of Rochester (Flaum Eye Institute). He then completed an elective 2-year fellowship in Glaucoma at Washington University in St. Louis (Barnes Jewish Hospital). Afterward, he spent several wonderful years practicing on the island of Maui, Hawaii where he provided a very wide variety of medical and surgical eye care. He then completed another elective fellowship in Cornea/External Diseases/Refractive Surgery at the University of California, San Diego (UCSD) where he was honored as “Fellow of the Year.” He is board-certified by the American Board of Ophthalmology and is a member of the American Academy of Ophthalmology (AAO), the American Society of Cataract and Refractive Surgery (ASCRS), the Association for Research in Vision and Ophthalmology (ARVO), and the Maryland Society of Eye Physicians and Surgeons.

Dr. Chang enjoys providing a variety of surgical services including cataract surgery (including laser-assisted with the LenSx femotsecond laser and Verion® and ORa® systems) with the full spectrum of lens implants (e.g. monofocal, toric, ReSTOR ®/Technis® multifocal), refractive surgery (e.g. all-laser PRK/LASIK using the LenSx femtosecond and Alcon Wavelight EX500 excimer lasers), collagen crosslinking, ocular surface surgeries (e.g. pterygium, conjunctivochalasis), the full spectrum of glaucoma surgeries (e.g. laser trabeculoplasty, Ex-PRESS shunts, trabeculectomy, glaucoma drainage devices, iStent, Kahook goniotomy, Cypass micro-stent, endoscopic/diode cyclophotocoagulation), the full spectrum of corneal transplantation (e.g. PKP/DALK, DSEK, DMEK, keratoprosthesis), anterior chamber reconstruction, and IOL repositioning (e.g. iris-fixated and intrascleral-IOLs). He also enjoys solving complicated clinical cases outside of the operating room.

He has published multiple manuscripts in peer-reviewed medical journals, has given invited presentations, and recommends articles to other doctors as a faculty member of F1000 prime. Dr. Chang is passionate about education in both Ophthalmology and Optometry and founded the extremely popular board review websites, OphthoQuestions, and ODQuestions. In addition, Dr. Chang is a technical adviser for RadOncQuestions and OTQuestions, comprehensive question banks that empower their users to learn or review fundamentals of all facets of radiation oncology and occupational therapy respectively.

Dr. Chang is thrilled to be “home” with the goal of providing compassionate and excellent care to the tri-state community. His rare free time is spent exploring the area and other countries with his wife Cheryl and children Logan and Chloë.


Maryland Vision Institute


220 Champion Drive, Suite #100

Hagerstown, MD 21740 USA

Telephone – 301-791-0888

Email –

About: Sidney Chang, MD Bio