For over thirty years, Carel has a special interest in inherited as well as age-related retinal diseases. He conducted numerous studies on the clinical spectrum of Stargardt disease and was the first to describe the late-onset phenotype. He holds a database that contains clinical and genetic data of over 3,000 patients with inherited retinal degeneration, including 400 cases with Stargardt disease.The ambition of Prof. Hoyng is to make new treatments available for patients with IRD, diseases that so far have been untreatable.