Multimodal imaging comparison of perifoveal exudative vascular anomalous complex and resembling lesions.

Acta Ophthalmologica
Lisette M SmidSuzanne Yzer

Abstract

Perifoveal exudative vascular anomalous complex (PEVAC) was initially described as an isolated aneurysmal lesion in healthy eyes. Similar aneurysmal abnormalities may occur in association with retinal vascular diseases such as diabetic retinopathy or retinal vein occlusions (PEVAC-resembling). The aim of this study was to compare several imaging characteristics of PEVAC and PEVAC-resembling lesions. Ten eyes with a PEVAC and 27 eyes with a PEVAC-resembling lesion were included in this cross-sectional study. They were all imaged with optical coherence tomography (OCT), OCT angiography (OCT-A) and colour fundus photography (CFP). Several clinical, morphological and vascular characteristics were assessed and compared between both PEVAC types. All PEVAC lesions were unilateral, while PEVAC-resembling lesions appeared bilateral in 23% of patients (p > 0.05). Unilateral multifocal PEVAC-resembling lesions were more frequently observed (56%) than unilateral multifocal PEVAC lesions (10%, p < 0.01). Furthermore, 90% of the PEVAC lesions were located within 500 µm from the centre of the fovea, while this was only true for 56% of the PEVAC-resembling lesions (p > 0.05). No notable differences were observed in other studied characteristic...Continue Reading

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