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. 2021 May;259(5):1123-1134.
doi: 10.1007/s00417-020-05021-y. Epub 2020 Nov 26.

Exudative non-neovascular age-related macular degeneration

Tommaso Bacci  1   2 , Juliet O Essilfie  1   3   4 , Belinda C S Leong  1   5 , K Bailey Freund  6   7   8
Affiliations

Exudative non-neovascular age-related macular degeneration

Tommaso Bacci et al. Graefes Arch Clin Exp Ophthalmol. 2021 May.

Abstract

Purpose: To describe the clinical and multimodal imaging (MMI) features of age-related macular degeneration (AMD) eyes presenting with intraretinal exudation and no evidence of neovascularization or structural alterations of native retinal vessels.

Methods: This was a retrospective review of the MMI and electronic health records for 3 consecutive patients presenting with unilateral exudative non-neovascular age-related macular degeneration. MMI included confocal color fundus photography (CFP), fundus autofluorescence (FAF), fluorescein angiography (FA), spectral domain optical coherence tomography (SD-OCT), swept-source optical coherence tomography angiography (SS-OCTA), and spectral domain optical coherence tomography angiography (SD-OCTA). Dense B-scan OCTA (DB-OCTA) patterns and implemented image post-processing were used to improve spatial resolution in the OCTA analysis and remove projection artifacts.

Results: Three eyes of 3 patients (1 male and 2 females, ages 72-87) developed intraretinal fluid (IRF) producing retinal edema during regular follow-up for non-neovascular AMD. FA, SS-OCTA, and DB-OCTA demonstrated no evidence of macular neovascularization or discrete retinal vascular abnormalities that could explain the IRF accumulation. Two eyes received intravitreal anti-VEGF therapy and demonstrated prompt resolution of IRF with periodic recurrences over time.

Conclusion: Exudative non-neovascular AMD is a novel clinical phenotype characterized by the presence of non-neovascular intraretinal exudation producing macular edema. Differentiating this condition from other manifestations of AMD requires appropriate use of MMI. Further study is needed to assess the clinical impact and optimal management of exudative non-neovascular AMD.

Keywords: Age-related macular degeneration (AMD); Exudative non-neovascular AMD; Intraretinal fluid; Perifoveal exudative vascular anomalous complex (PEVAC); Retinal pseudocyst; Type 3 macular neovascularization.

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