Final answer:
Drusen are located between the retinal pigment epithelium and Bruch's membrane, and are linked to age-related macular degeneration.
Step-by-step explanation:
Drusen are found between the retinal pigment epithelium and the underlying structure known as Bruch's membrane. These small yellowish deposits are associated with aging and certain eye conditions, such as age-related macular degeneration (AMD). Bruch's membrane is a vital part of the eye's structure, separating the retinal pigment epithelium from the choroid, a layer that contains blood vessels providing nutrients to the retina.