What feature differentiates Fibrovascular PEDs from serous PEDs?

Fibrovascular pigment epithelial detachments (PEDs) and serous PEDs can be distinguished by their interior contents and structural characteristics.

Fibrovascular PEDs typically contain a mixture of fibrous tissue and vascularized components, which contribute to their dense, often irregular appearance. In contrast, serous PEDs are characterized by a fluid accumulation underneath the retinal pigment epithelium, leading to a more smooth and homogenous elevation. This fluid-filled nature gives serous PEDs a different texture and less density, making the contents and underlying structure the key differentiating factor between the two types of PEDs.

While other features such as shape, size, and presence of retinal folds could vary with both types, the content and internal structure primarily define the clinical distinction, establishing the significance of interior contents for the correct identification.