Affiliation:
1. The Affiliated Eye Hospital of Wenzhou Medical University
Abstract
Abstract
Background
To investigate short-term choroidal structural and vascular changes after epiretinal membrane (ERM) surgery
Methods
Sixty-five patients with unilateral ERM underwent pars plana vitrectomy combined with cataract surgery and were examined one day before surgery and one week, one month, and three months after surgery. Choroidal thickness (CT) and choroidal vascular index (CVI) were evaluated using horizontal enhanced depth imaging optical coherence tomography (EDI-OCT) scans and were further calculated using semi-automatic algorithms using MATLAB R2017a.
Results
Preoperatively, CVI was higher in eyes with ERM (61.70 ± 5.17%) than in fellow eyes (59.99 ± 5.26%). CVI increased significantly at one week after surgery (62.14 ± 5.02%) and decreased at 1 and 3 months after surgery (60.76 ± 4.97% and 60.4 ± 4.83%, respectively). The change was pronounced in the nasal region (p < 0.001) and central region (p < 0.05). CT in the temporal macula increased at 1 week (239.65 ± 72.98 µm) after surgery and decreased at 1 and 3 months after surgery (222.15 ± 71.91 µm and 222.33 ± 65.72 µm, respectively; p < 0.01).
Conclusions
Short-term postoperative variations in the choroid have been demonstrated in eyes with ERM. This may be related to postoperative inflammation and the release of macular traction. Therefore, CVI assessment using EDI-OCT may be a useful tool for evaluating ERM.
Publisher
Research Square Platform LLC
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