The Cornea and Laser Eye Institute - Hersh Vision Group is one of the premier LASIK laser vision correction practices in the United States, and its CLEI Center for Keratoconus is a nationally respected keratoconus and corneal disease subspecialty practice. At CLEI, Dr. Hersh and our staff give our patients the four elements most important in choosing a LASIK surgeon - the best education and training, unsurpassed depth and breadth of experience, the most advanced technology, and focused dedication to the field... this is all we do.