COVID-19 Notice

Please note, our business hours have not changed. As we navigate through the Coronavirus Pandemic, our office will continue to be responsive to all inquiries during our normal business hours. If you need to reach a doctor during non-business hours, please call 201-692-9434 and follow the emergency contact instructions. You can reach us by phone at 201-692-9434 or e-mail at

Glenpoint Centre East 300 Frank W. Burr Blvd. Teaneck, New Jersey, 07666



Dr. Steven A. Greenstein, following in Dr. Hersh’s footsteps, completed a Cornea, Refractive and External Disease Fellowship at Massachusetts Eye and Ear at Harvard Medical School. During his time at Harvard, Dr. Greenstein had the honor of being awarded the prestigious Heed Ophthalmology Fellow Award. Dr. Greenstein was one of twenty graduating ophthalmology residents to receive this award.

Prior to and during his professional ophthalmic career, Dr. Greenstein worked closely with Dr. Hersh and The CLEI Center for Keratoconus in our research department. Together, they published a multitude of articles in prestigious medical journals, including Cornea and Journal of Cataract and Refractive Surgery, on CLEI’s corneal collagen crosslinking (CXL) clinical trial for treatment of keratoconus and corneal ectasia. In addition to publications, he has presented at numerous scientific meetings. Dr. Greenstein co-authored a chapter with Dr. Hersh on Corneal Collagen Crosslinking for Keratoconus and Corneal Ectasia in the textbook, Advances in Medical and Surgical Cornea. Dr. Steven A. Greenstein graduated from New York University earning a degree in Economics cum laude. He received his medical degree from the Albert Einstein College of Medicine where he graduated with a special distinction in clinical research. Dr. Greenstein completed an Internal Medicine Internship, prior to the start of ophthalmology residency training at Rutgers – New Jersey Medical School. While at Rutgers, Dr. Greenstein trained under Dr. Peter Hersh.

We are very fortunate to have Dr. Greenstein join The Cornea and Laser Eye Institute as he brings much knowledge and dedication that we strive to provide to our patients.


Awards and Recognitions

Articles and Publications

Steven A. Greenstein, M.D.