John Ferris has been a Consultant Ophthalmologist at Cheltenham General Hospital since 1999. He has a special interest in cataract surgery, squint surgery, and paediatric ophthalmology. John has an international reputation in the fields of simulation and surgical training. He was the Head of the School of Ophthalmology in the Severn deanery for 10 years and succeeded Larry Benjamin as the Royal College of Ophthalmologists surgical skills faculty lead in 2019, a post he held until 2023. John has designed the Simulated Ocular Surgery and Squint Clinic websites and has written four ophthalmology textbooks, as well as numerous scientific publications. He has been an Orbis volunteer since 2018 and is a regular contributor to Cybersight webinars. John joined the Orbis UK board as Programme and Medical Advisory Committee Chair in July 2023.