About CLEI

The Cornea and Laser Eye Institute

CLEI staff

Founded in 1995, the Cornea and Laser Eye Institute is a nationally renowned center specializing exclusively in vision correction and corneal surgery. The founder, Dr. Peter Hersh, envisioned a center of excellence dedicated to the eye surgery subspecialty of laser, refractive, keratoconus, and corneal surgery, devoted to the best patient results and a leadership role in the U.S. in this unique medical field. 

Today the Cornea and Laser Eye Institute is a recognized leader in the field of vision correction procedures , corneal surgery, and keratoconus. In addition to our surgeon’s and doctor’s extensive training and experience in LASIK and other refractive surgical techniques, CLEI’s excellent patient results derive from our meticulous attention to detail, highly trained team, state-of-the-art equipment and laser technology, humidity and temperature-controlled laser room and sterile procedure technique, and careful screening and examination of our patients. 

To assure your experience is of utmost comfort and success, our team has been carefully trained in all procedures correcting refractive errors and other corneal disorders, including LASIK, LASEK, PRK, Evo ICL, Intacs, Wavelight, reading vision correction, implantable lenses, advanced corneal surgery and transplantation techniques, premium cataract surgery with the newest implants and laser innovations, and other procedures. Our team will provide you with the essential information regarding vision correction surgery based upon your individual needs, and help you make a better educated decision as to whether laser vision correction is right for you. 

The CLEI team will make your experience with us pleasant, informative, and successful. We are always available to discuss any questions or concerns you may have.

The Cornea and Laser Eye Institute is open Monday, Wednesday, Thursday, and Friday from 8:30am to 5:00pm and Tuesday from 12:00pm to 8:00pm. We understand the busy schedule of our patients, so our courteous patient management team will try to accommodate your schedule as much as possible.

CLEI is located in Teaneck, New Jersey and we serve the nearby Paramus, Morristown, and Princeton communities. We are the choice destination for Manhattan, New York City patients seeking LASIK laser eye surgery. We know that a number of people will be traveling longer distances to see us. For your convenience, we have a hotel in our complex and also work with a number of doctors around the U.S. and internationally. In addition, please click on the links below for travel information and accommodations near us.

04/04/2022
5 stars 5
Dr. Greenstein is a miracle worker. I had 20/100 vision in my right eye. Then after my CXL and Intacs surgery by Dr. Hersh, Dr. Greenstein performed topography guided PRK which has been nothing short of miraculous. I am now seeing at 20/30 and have not seen better in 25 years since I was diagnosed with Keratoconus. Thank you for giving me my vision back! I am indebted for life.
04/04/2022
5 stars 5
I have a really complicated case of Keratoconus. After years of bouncing doctor to doctor in search of a solution to my continually degrading eyes, my wife found Dr. Hersh. He and his team have been a life changer. They performed collagen cross linking with Intacs which stabilized may cornea and miraculously stopped the deterioration of my eye. Thank you Dr. Hersh for your amazing work!
02/19/2022
5 stars Recommended
Dr OYAKHIRE is real I was suffering from HERPES Simplex Virus, i was totally depressed due to my predicament , until i meet Dr.OYAKHIRE the great Traditional healer who cured me. you can also contact him now on whats app +2347084100646 via email: droyakhireherbalhome@gmail.com for more information. The medicine has NO SIDE EFFECT, there's no special diet when taking the medicine. He also has cure for SHINGLES ECZEMA, URETHRA, WART, HIV AIDS ALS, HEPATITIS B, CANCER, HERPES, DIABETES ULCER , fibroid, Asthma ,HIV and lots more https://www.facebook.com/Dr-oyakhireherbalhome-102249508911885
12/18/2021
5 stars 5
I'm an IT service provider and I depend on my sight.When they explained to me that I was an excellent candidate for Lasik we had a discussion on the procedure.Dr. Greenstein and the staff explained the process and after care. They answered every question that I could think of.The cost to benefit was great. I can see the computer screen, my smart phone screen, emails, serial numbers, small connectors and little screws.Before it would be more difficult with glasses because they were dirty, foggy, fall off my head or I would break them or lose them.I would often get disoriented putting on and taking my glasses off.There were no real lingering aftereffects except for some redness which went away quickly.There were several after care visits to follow up and make sure my vision was on target.Way better experience than going to the dentist. At least for me.
12/07/2021
5 stars 5
I highly recommend CLEI - Hersh Vision for LASIK. I am 29 and have been in glasses / contacts since I was 10. My prescription was -4 in each eye. The staff was friendly and informative, and fully explained what to expect before during and after the procedure. The surgery was painless, with only a few hours of manageable stinging afterwards, which subsided same day.Dr. Greenstein is professional and kind, and I encourage all of those interested to make an appointment for a consultation.

Meet Our Expert Team of Doctors

Dr. Steven A. Greenstein, MD

OPHTHALMOLOGIST

Steven A. Greenstein, MD is the medical director and director refractive surgery at CLEI. He graduated from New York University and received his M.D. from the Albert Einstein College of Medicine where he graduated with a special distinction in clinical research. Dr. Greenstein completed his Ophthalmology Residency training at Rutgers New Jersey Medical School. While at Rutgers, Dr. Greenstein trained under Dr. Peter Hersh. He completed a Cornea, Refractive, and External Disease Fellowship at Massachusetts Eye and Ear Infirmary at Harvard Medical School. He is an Assistant Clinical Professor at Rutgers New Jersey Medical School. He is an internationally recognized expert in cornea and refractive surgery. He is a team ophthalmologist for the New York Jets.

You can view a small selection of the research and clinical trial results Dr. Greenstein published here.


Dr. John D. Gelles, OD

OPTOMETRIST

John D. Gelles, OD, FAAO, FIAOMC, FCLSA, FSLS, FBCLA is the director of the specialty contact lens division at CLEI. He graduated from the University of Oregon and received his O.D. from the Pennsylvania College of Optometry. He went on to complete a Cornea Fellowship under Dr. Peter Hersh. He is an adjunct clinical professor in Cornea and Contact Lens for the New England College of Optometry, Illinois College of Optometry, and State University of New York College of Optometry. Additionally, he is an Assistant Clinical Professor at Rutgers New Jersey Medical School. He is an internationally recognized expert in specialty contact lenses and PROSE treatment. 

You can view a small selection of the research and clinical trial results Dr. Gelles published here.


Dr. Peter S. Hersh, MD

OPHTHALMOLOGIST

Peter S. Hersh, MD, FACS is the director of Cornea and the research division at CLEI. He graduated from Princeton University and received his M.D. from Johns Hopkins Medical School. He completed his ophthalmology residency and Cornea fellowship at the Massachusetts Eye and Ear Infirmary at Harvard Medical School and remained on faculty at Harvard for several years. In 1995, he founded the Cornea and Laser Eye Institute and in 2002 the CLEI Center for Keratoconus. He is a Clinical Professor of Ophthalmology, Director of the Cornea and Refractive Surgery Division at Rutgers New Jersey Medical School and a Visiting Research Collaborator at Princeton University. He is an internationally recognized expert in cornea and refractive surgery and the official team ophthalmologist for the New York Jets.

You can view a small selection of the research and clinical trial results Dr. Hersh published here.


Dr. David S. Chu, MD

OPHTHALMOLOGIST

David S. Chu, MD is a clinical collaborator at CLEI. He received his bachelor’s degree from Bowdoin College. He graduated from the New York University School of Medicine and completed his ophthalmology residency at New York Medical College. He completed a fellowship in Ocular Inflammatory Disease and Uveitis at the Massachusetts Eye and Ear Infirmary at Harvard Medical School. He is a Clinical Professor at Rutgers New Jersey Medical School. He is an internationally recognized expert in complex immunologic corneal disease and surgery. He is a team ophthalmologist for the New York Jets.

You can view a small selection of the research and clinical trial results Dr. Chu published here.

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