Comparison of Morphological Features of Type 1 CNV in AMD and Pachychoroid Neovasculopathy: An OCTA Study.

BACKGROUND AND OBJECTİVE: The purpose of this study is to compare the morphological features of type 1 choroidal neovascularization (CNV) in eyes with age-related macular degeneration (AMD) and pachychoroid neovasculopathy (PNV) using optical coherence tomography angiography (OCTA). PATİENTS AND

METHODS

Nineteen eyes of 17 patients with PNV and 30 eyes of 30 patients with AMD were evaluated. The size and area of CNV and morphological patterns during a 6-month period were analyzed using optical coherence tomography angiography.

RESULTS

The presence of a feeder vessel was more common in AMD than in PNV. Indistinct pattern was more common in PNV than AMD. Pruned vascular tree pattern was rare in PNV eyes during follow-up. The mean size and flow of selected CNV area was significantly smaller in PNV group. CONCLUSİON: This study demonstrated that type 1 CNVs in the PNV group is characterized by a smaller area. Morphologic pattern differences between them might be explained by different etiopathogenesis under these circumstances. [Ophthalmic Surg Lasers Imaging Retina. 2020;51:640-647.].