Fig. 15 Marked retinal and choroidal atrophy in left eye of a 75-year-old man with advanced retinitis pigmentosa secondary to the Pro23His mutation of rhodopsin. (From Weleber RG, Gregory-Evans: Retinitis pigmentosa and allied disorders. In Ryan SJ [ed]: Retina, vol 1. Basic Science and Inherited Retinal Disease, 3rd ed. St. Louis: Mosby-Year Book, 2001:362–460)