The study was done to evaluate the various patterns of subretinal fluid (SRF) in eyes with AMD in the absence of macular neovascularization (MNV) and to assess the long-term outcomes in these eyes.

This retrospective study included only eyes with non-neovascular AMD and associated SRF. Eyes with evidence of MNV were excluded. SD-OCT was obtained at baseline and at follow-up, and qualitative and quantitative SD-OCT analysis of macular drusen including drusenoid PED and associated SRF was performed to determine anatomic outcomes.

Forty-five eyes from 45 patients were included in this analysis. Mean duration of follow-up was 49.7±36.7 months. SRF exhibited three different morphologies: crest of fluid over the apex of the drusenoid PED, pocket of fluid at the angle of a large druse or in the crypt of confluent drusen or drape of low-lying fluid over confluent drusen. Twenty-seven (60%) of the 45 eyes with fluid displayed collapse of the associated druse or drusenoid PED and 24 (53%) of the 45 eyes developed evidence of complete or incomplete retinal pigment epithelial and outer retinal atrophy.

The study concluded that the non-neovascular AMD with SRF is an important clinical entity to recognise to avoid unnecessary anti-vascular endothelial growth factor therapy.

Reference: https://bjo.bmj.com/content/early/2020/09/12/bjophthalmol-2020-317326