Postoperative examinations include assessment of the FCVB position, slit lamp microscopy (Nikon FS-2, Nikon Inc, NY), scanning laser ophthalmoscope (SLO) (OPTOSPLC, Daytona, England), VA through E Standard Logarithm Eyesight, IOP with Goldmann applanation tonometry (CT80A, Topcon, Japan), optical coherence tomography (OCT) (Visante, Carl Zeiss Meditec, Dublin, CA), ultrasound biomicroscopy (UBM) (SW-3200L, Suoer, China), B-scan (HC00504598, Cinescan, France), computed tomography scans (Ingenuity128, Philips, Holland), as well as monitoring the postoperative complications. The primary effectiveness outcome measure was retinal reattachment after FCVB implantation at the six-month follow-up at the latest. The secondary effectiveness outcome measures were VA and IOP, and the safety outcome was postoperative complications.