Abstract
To study the anatomic outcome of leaving vitreous cortex remnants (VCR) during pars plana vitrectomy (PPV) for primary rhegmatogenous retinal detachment (RRD). The study comprised patients with RRD who had PPV by a single surgeon between January 2019 and December 2020 and followed for 6 months. After intravitreal injection of triamcinolone acetonide, the topographic pattern of VCR at the periphery (p) and macula (m) was divided into 2 types by extent: complete or 4 quadrants (pVCR4Q), andbetween 2 and 4 quadrants ≥2 quadrants (pVCR>2Q), or by location >1 inferior retinal quadrant (pVCR>1InfQ), and at the macula (mVCR). Anatomical failure or retinal re-detachment within 6 months after surgery was the primary outcome measures. The occurrence of grade C proliferative vitreoretinopathy (PVR) and epiretinal membrane (ERM) were used as secondary outcome indicators. A 6-month prospective follow-up was performed on 103 patients. pVCR4Q was detected in 31 eyes, pVCR>2Q in 40 eyes, pVCR>1InfQ in 40 eyes and mVCR in 54 eyes. Recurrent RRD developed in 9 (8.7%) eyes, PVR grade C in 6 (5.8%) eyes and ERM in 11 (10.7%) eyes. According to multivariate regression analysis,the existence of any type of VCR did not correlate with anatomical failure, PVR or ERM. The initial success rate of PPV and the growth of PVR or ERM do not appear to be impacted by keeping VCR.
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