Background: To evaluate the efficacy of micro-incision vitrectomy surgery (MIVS) using Lumera and Resight noncontact\nsutureless wide-angle viewing systems (WAVS) for primary rhegmatogenous retinal detachment (RRD), and\nto analyze the anatomical and visual outcomes.\nMethods: The retrospective, non-comparative, interventional case series reported here was conducted from June\n2014 through November 2016. Enrolled patients presented with primary RRD and received MIVS with/without\ncryopexy by one surgeon using the Lumera and Resight non-contact sutureless WAVS. All patients were followedup\nfor a minimum of 12 months. Variables collected included patient demographics, best-corrected visual acuity,\nand macular status. The number and position of retinal break(s), and the use of cryopexy, were also recorded.\nOutcome measures included operative time, single-operation anatomical success rate, final anatomical success rate,\nrecurrent rate, postoperative best-corrected visual acuity, and surgical complications. The end points were operative\ntime, anatomical outcome, and functional outcome.\nResults: In total, 110 eyes from 110 patients (68 men and 42 women) were treated. Of these, 103 (93%) eyes were\nreattached after primary vitrectomy. One hundred ten eyes (100%) reached final anatomical success. The mean\noperative time was 50.55 min. Multivariate analyses were performed with best model selection principle based on\ngeneral linear model by Akaike Information Criteria for detecting possible factors related to operation time, and\nwith multivariate logistic regression analysis for revealing probable clinical parameters which might influence the\nanatomical outcome after first operation and final visual outcome. Intraoperative cryopexy and multiple breaks\nincreased operative time significantly. More favorable BCVA was significantly correlated with shorter operation time\nand the preoperative macula-on status. Multivariate logistic regression on the group of patients who have received\nthe cataract surgery revealed that the pre-operative BCVA is a significant factor which can predict the visual outcome\nafter MIVS.\nConclusions: The outcome of primary RRD repaired by MIVS using the Lumera and Resight sutureless WAVS was not\ninferior to any other published method. This instrument combination resulted in a relatively rapid and comfortable\nprocedure without serious postoperative complications. Cryopexy and multiple breaks affected operative time significantly.\nShorter operative times and preoperative macula-on status are associated with better final visual outcomes.
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