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首页> 外文期刊>Clinical ophthalmology >Valved versus nonvalved cannula small-gauge pars plana vitrectomy for repair of retinal detachments with Grade C proliferative vitreoretinopathy
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Valved versus nonvalved cannula small-gauge pars plana vitrectomy for repair of retinal detachments with Grade C proliferative vitreoretinopathy

机译：瓣膜插管与非瓣膜插管小口径平板玻璃体切除术修复C级增生性玻璃体视网膜病变的视网膜脱离

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Purpose: Valved cannulas are a recent addition to small-gauge pars plana vitrectomy (PPV) and provide stable intraocular fluidics. The goal of this study was to compare outcomes and postoperative complication rates of valved vs nonvalved cannula small-gauge PPV for repair of retinal detachments (RDs) complicated by Grade C proliferative vitreoretinopathy (PVR). Methods: A retrospective chart review of 364 consecutive eyes with either valved or nonvalved cannula PPV for RD repair was performed. The primary outcomes were single surgery and final anatomic success and change in best-corrected visual acuity for repair of RDs complicated by Grade C PVR. Results: We identified 36 eyes in the valved group and 31 eyes in the nonvalved group with Grade C PVR RD. The single surgery success was 83% vs 77% ( P =0.555) and the final anatomic success was 94% vs 87% ( P =0.404) in the valved vs nonvalved eyes, respectively. The mean final visual acuity gain was ?0.36 logarithm of the minimum angle of resolution (logMAR; approximate Early Treatment Diabetes Retinopathy Study [ETDRS] score =17 letters) in valved eyes vs ?0.33 logMAR (approximate ETDRS score =16 letters) in nonvalved eyes ( P =0.81). Postoperative complication rates including postoperative day 1 hypotony, hypertony, and anterior chamber fibrin formation; postoperative retention of intraocular or subretinal perfluorocarbon liquid; and subsequent epiretinal membrane peel were not statistically different between groups. Conclusion: Valved cannula PPV yields equivalent visual acuity and anatomic outcomes without increased postoperative complication rates compared to traditional nonvalved cannula PPV for Grade C PVR-associated RD repair.
机译：目的：带瓣插管是小规格玻璃体玻璃体切除术（PPV）的最新成员，可提供稳定的眼内流体。这项研究的目的是比较瓣膜和非瓣膜小口径PPV修复C级增生性玻璃体视网膜病变（PVR）的视网膜脱离（RD）的结局和术后并发症发生率。方法：回顾性分析了364只有瓣或无瓣插管PPV的连续眼睛，以进行RD修复。主要结果是单次手术和最终的解剖学成功以及修复RD并发C级PVR的最佳矫正视力的改变。结果：我们在有瓣膜组中识别出36眼，在非瓣膜组中发现了31眼，具有C级PVR RD。有瓣膜和无瓣膜的单次手术成功率分别为83％和77％（P = 0.555），最终解剖成功率分别为94％和87％（P = 0.404）。有瓣眼的平均最终视力增加为最小分辨角度的对数（logMAR;糖尿病早期视网膜病变研究[ETDRS]近似值[17个字母]的对数），而不是非瓣膜性眼球的最低分辨角度的对数为0.33 logMAR（约ETDRS的近似值= 16个字母）眼睛（P = 0.81）。术后并发症发生率包括术后第一天的低渗，高渗和前房纤维蛋白形成;眼内或视网膜下全氟化碳液体的术后保留;两组之间的视网膜上膜剥离及随后的差异无统计学意义。结论：与传统的非瓣膜插管PPV进行C级PVR相关的RD修复相比，带瓣插管PPV产生了同等的视力和解剖结果，而没有增加术后并发症。

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