Swept-Source Optical Coherence Tomography Angiography in Vitreomacular Traction Syndrome

Author:

Nawrocka Zofia Anna1ORCID,Nawrocka Zofia1,Nawrocki Jerzy1

Affiliation:

1. Ophthalmic Clinic “Jasne Blonia,” Lodz, Poland

Abstract

Purpose: A swept-source optical coherence tomography angiography (SS-OCTA) analysis of vasculature in vitreomacular traction (VMT) before and after surgery as well as 15 months’ “watchful waiting” follow-up data. Methods: A retrospective analysis of 38 eyes. Patients were divided into group 1: untreated (20 eyes); group 2: untreated, spontaneous release of traction (4 eyes); and group 3: vitrectomy (14 eyes). Results: In all cases, SS-OCTA of the choriocapillaris revealed a hyporeflective area, which disappeared after traction release. In group 1, none of the analyzed factors significantly changed. In group 2, visual acuity (VA) improved from 0.3 logMAR to 0.1 logMAR. None of the following parameters significantly changed: central choroidal thickness, superficial fovea avascular zone (sFAZ), deep fovea avascular zone (dFAZ), and vessel densities. In 1 eye a lamellar macular hole formed. Factors increasing the chances of spontaneous release of traction were width of traction and central retinal thickness ( P < .05). In group 3, VA improved from 0.27 Snellen (0.6 logMAR) to 0.44 Snellen (0.4 logMAR) ( P < .05). Postoperative OCTA revealed significant decreases in central retinal thickness ( P < .001), the parameters sFAZ, and dFAZ ( P < .05). Conclusions: sFAZ and dFAZ decreased after vitrectomy but not after spontaneous release of traction. VA was better in eyes with spontaneous release of traction. The degree of improvement in VA was greater in the vitrectomy group. In all cases a hyporeflective area is visible in the choriocapillaris layer in SS-OCTA. It disappears when traction is released. Early treatment, at least in patients with lower VA, might be beneficial.

Publisher

SAGE Publications

Subject

General Medicine

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