Doctor Levit has dealt with a wide variety of complex eye conditions throughout his career, he routinely receives referrals from ophthalmic surgeons, in the UK and from abroad, optometric colleagues as well as from general practitioners of patients with a wide variety of corneal and visual disorders. The most common disorders referred are ecstatic corneal disorders like keratoconus, eyes with postoperative complications, following corneal graft, refractive laser or cataract surgery. The fitting requirements for these patients are more complex and require specialist knowledge and lens designs. Doctor Levit is a certified specialist in all medical contact lens modalities; these include specialist corneal rigid lenses, a variety of hybrid lens designs, as well as large corneal, semi-limbal and scleral lenses. All of these are available and regularly fitted at Barnard and Levit.