Safety And Clinical Outcomes Of Primary Posterior Continuous Curvilinear Capsulorhexis In Postvitrectomy Cataract Eyes

ObjectivesTo evaluate the safety and outcomes of primary posterior continuous curvilinear capsulorhexis(PPCCC)combined with phacoemulsification in post-vitrectomy eyes.MethodsThirty post-vitrectomy eyes of 30 patients with cataract between March 2017 and December 2020 were enrolled,14 of whom coexisted with residual silicone oil droplets.PPCCC through the cornea incision was performed before in-the-bag intraocular lens implantation.All patients were followed up for at least 3 months postoperatively.The outcome measures were corrected distance visual acuity(CDVA),intraocular pressure(IOP),corneal endothelium cell counts(CECC),central macular thickness(CMT),the occurrence of intraoperative or postoperative complications,and the incidence of posterior capsular opacification(PCO).ResultsThe mean age was 56.77 ± 9.96 years(range from 31 to 69).The mean log MAR CDVA was 1.51 ±0.56 preoperatively and improved to 0.64 ± 0.30postoperatively(P < 0.001).The mean CECC was 2598.3 ± 407.6 cells/mm~2 preoperatively and 2534.6 ± 417.0 cells /mm~2 postoperatively(P<0.05).No significant differences were found in IOP(P=0.91)and CMT(P=0.59)between preoperatively and postoperatively.Lens epithelium cells proliferation was confined to the peripheral capsular bag during a mean follow-up of 14.13 ± 8.03months(range 3 to 32 months).Postoperative visual disturbance symptoms were ameliorated in those coexisted with patients.Intraoperative posterior capsule extension occurred in 1 eye(3.3%),although it did not affect the patient’s vision.No serious complications,including retinal detachment or endophthalmitis,were detected in any of the 30 cases.Conclusions(1)PPCCC through cornea incision combined with phacoemulsification may be a safe and practical alternative to prevent PCO in post-vitrectomy eyes with cataract.(2)It is a simple,safe and effective way to remove silicone oil droplet with posterior lens capsulotomy.