What is the most common type of CNV associated with Fibrovascular PEDs?

Fibrovascular pigment epithelial detachments (PEDs) are primarily associated with Type 1 choroidal neovascularization (CNV). This type of CNV occurs beneath the retinal pigment epithelium (RPE) and is often driven by underlying conditions such as age-related macular degeneration (AMD). The presence of a PED can indicate a more chronic or advanced stage of CNV development, often reflecting the vascular changes and fluid accumulation that characterize this condition.

In the context of AMD-related pathology, Type 1 CNV is recognized for being more commonly linked to the presence of fibrovascular PEDs compared to the other types of CNV, which have different anatomical locations and pathways of formation. Type 2 is primarily subretinal, Type 3 is more related to polypoidal choroidal vasculopathy, and Type 4 is an atypical form often not seen as frequently in clinical practice.

Understanding the type of CNV involved with fibrovascular PEDs assists in diagnosing and managing patients with AMD and highlights the importance of recognizing specific features in imaging studies.