Which type of PED is considered a feature of dry AMD?

The feature of dry age-related macular degeneration (AMD) associated with pigment epithelial detachments (PED) is the drusenoid PED. Drusenoid PED is characterized by the presence of drusen, which are yellowish spots composed of lipids and proteins, forming between the retinal pigment epithelium (RPE) and Bruch's membrane. This type of PED is typically observed in the context of dry AMD and reflects a degenerative change in the RPE.

In contrast, fibrovascular PED is more commonly associated with wet AMD, where there is neovascularization and structural changes in the retina leading to more severe vision loss. Serous PED, which arises from the accumulation of fluid under the RPE due to various reasons, is also not characteristic of dry AMD and is more frequently linked with conditions like retinal vein occlusion or inflammatory processes. Hence, in the context of dry AMD, the emphasis is on identifying drusenoid PED as the primary association.