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Purpose:

The purpose of this study was to evaluate the long-term effects of vitrectomy and internal limiting membrane peeling for macular edema secondary to central retinal vein occlusion (CRVO) and hemiretinal vein occlusion (HRVO).

Methods:

Best-corrected visual acuity, central foveal thickness by optical coherence tomography, and fluorescein angiography were evaluated retrospectively in 20 patients (20 eyes). The mean follow-up time was 61.2 months. Pars plana vitrectomy and internal limiting membrane peeling using indocyanine green staining were performed in all patients.

Results:

Preoperative mean central foveal thickness of all 20 eyes decreased significantly by 6 months, and this reduction was maintained until 60 months. The mean central foveal thickness of the group with perfused type CRVO, ischemic type CRVO, and HRVO at 6 months significantly decreased from the preoperative value, and the …