What does the term "occult" refer to in the context of CNV associated with PEDs?

In the context of choroidal neovascularization (CNV) associated with pigment epithelial detachments (PEDs), the term "occult" refers to neovascularization that is hidden or not easily detectable. This implies that the neovascular activity may not be readily visible on standard imaging techniques like fluorescein angiography, which is commonly used to assess the nature and extent of CNV.

Occult CNV typically presents with less obvious or subtle signs, often requiring more advanced imaging modalities, such as optical coherence tomography (OCT), to properly identify and evaluate the extent of the neovascularization and its impact on the retinal structures. The recognition of occult CNV is crucial for diagnosing and managing conditions like age-related macular degeneration (AMD), as the treatment approach may differ based on the visibility and characteristics of the neovascular process.

Thus, "occult" encapsulates the challenge of detecting these less apparent forms of neovascularization and highlights the need for a comprehensive assessment in patients with PEDs to ensure appropriate therapeutic interventions.