MSRA-1680

An 80-year-old male visits his GP complaining of new visual symptoms. He is having difficulty reading the newspaper, particularly at night, and his symptoms appear to be fluctuating in severity. Upon fundoscopy, the doctor observes small deposits of extracellular material between Bruch’s membrane and the retinal pigment epithelium, but otherwise the examination is unremarkable. The patient has a history of lifelong smoking. What is the most probable diagnosis?