Fadi Kherdaji carried out his general surgical training in Ophthalmology in Cheltenham between 2001 and 2005 and then his surgical retinal training in London in 2005. He continued his higher surgical fellowship in medical and surgical retinal diseases in Singapore in 2006 and was awarded International Council of Ophthalmology Fellowship to pursue further training in Cornea and Refractive Surgery Fellowship in University of San Diego, California in 2007.
During that time he also worked with a pioneering refractive surgeon at CODET Eye Centre in Mexico. He then returned home to Damascus where he set up the Eye and Ear Hospital and was the chief surgeon for retinal, corneal and refractive conditions.
In 2012 Fadi Kherdaji returned to the UK with his family to work as a Consultant Surgeon within Gloucestershire Hospitals NHS with sub-specialty in Primary, Cornea and Retinal conditions. It was then he was reunited with his colleagues Tony and Aisling to form Theia & Co. This has been the go-to provider for premium cataract surgery laser refractive surgery in Gloucestershire. In 2023 he joined EuroEyes in their latest clinic in the prestigious Knightsbridge, London at LEC.