J Retin.  2023 Nov;8(2):82-90. 10.21561/jor.2023.8.2.82.

Optical Coherence Tomography Angiography Features of Idiopathic Epiretinal Membrane

• Chae, SH
• Choi J
• Kim JY
• Jeon HM
• Yoon HS

• KMID: 2552094
• DOI: http://doi.org/10.21561/jor.2023.8.2.82

Abstract

Purpose
To investigate optical coherence tomography angiography (OCTA) findings in idiopathic epiretinal membrane (ERM) compared with normal controls and analyze postoperative changes.
Methods
This retrospective and observational study included 54 eyes with idiopathic ERM and 134 normal control eyes. Foveal avascular zone (FAZ) area, perimeter, and circularity were measured and vascular parameters including vessel density and perfusion density in the superficial capillary plexus (SCP) were determined by OCTA.
Results
FAZ area was significantly smaller in the ERM group compared with the normal control group (p = 0.02). Vessel density and perfusion density in the SCP were significantly greater in the ERM group (p ＜ 0.01, for both). Six months after surgery, FAZ area had not significantly changed compared with before surgery (p = 1.00). Central vessel density and perfusion density in the SCP had decreased significantly 6 months after surgery (p ＜ 0.01, for both).
Conclusions
OCTA provides a useful display of the retinal vascular network in ERM patients. In the center foveal area, vessel density and perfusion density parameters were decreased 6 months postoperative, and in parafoveal area, vessel density and perfusion density parameters were increased 6 months postoperative.

Keyword

Epiretinal membrane; Fovea centralis; Optical coherence tomography; Retinal vasculature