The Cornea and Laser Eye Institute (CLEI) is an eye care practice in Teaneck, New Jersey, specializing in vision correction, cataracts, keratoconus, contact lenses, and corneal disease. Its team of ophthalmologists and optometrists includes Steven Greenstein, John Gelles, Peter Hersh, and David Chu. CLEI describes its approach as personalized, technology-focused care, supporting patients from consultation through treatment and follow-up.

The institute offers vision correction procedures including LASIK, PRK, EVO ICL, and custom lens replacement, as well as cataract evaluation and laser-assisted and premium cataract surgery. Its keratoconus and corneal disease services include testing, corneal crosslinking, topography-guided PRK, CTAK, corneal transplantation, and specialty contact lens fitting. Other options include PROSE treatment for ocular surface disease, orthokeratology, myopia management, cosmetic contact lenses, and dry eye care. CLEI also provides consultations to assess candidacy, appointment scheduling, patient forms, and financing through CareCredit. With a dedicated keratoconus center and experience in complex corneal and contact lens care, CLEI serves local, international, and long-distance patients.