Allon Barsam has set up and now runs a tertiary NHS practice specialising in corneal transplantation and complex anterior segment pathology. His private practice at OCL Vision is predominantly laser and lens vision correction surgery. He has published over 40 peer-reviewed publications, 15 book chapters and a major ophthalmology textbook now entering its third edition. He is a global opinion leader for the ophthalmic surgical industry and is regularly invited to lecture both nationally and internationally.