Retropupillary Iris Clip Intraocular Lenses: A Case Series of 57 Eyes.

To report visual and refractive outcomes and intraoperative and postoperative complications after pars plana vitrectomy (PPV) with retropupillary implantation of an iris clip intraocular lens (IOL). This is a retrospective case series of patients who underwent secondary retropupillary intraocular lens insertion combined with pars plana vitrectomy to treat aphakia secondary to a dislocated nucleus lens (group A); or IOL dislocation (group B). Patient demographics, preoperative visual and refractive outcomes, intraoperative factors, postoperative visual and refractive outcomes, and complications within the follow-up period ranging from 6 months up to 3 years postoperative, were recorded. In total, 57 eyes of 50 patients were included with a follow-up range of 6 months to 3 years. The overall mean age was 77.0 years (range 28 to 99 years), with 26/50 (52%) of patients being male. There were 13/57 (22.8%) patients in group A and 44/57 (77.2%) patients in group B. The single most common identifiable cause for lens dislocation was pseudoexfoliation, which was seen in 13/57 (22.8%) of eyes. The mean improvement in visual acuity (baseline and final follow) was 0.72 logMAR (1.09 logMAR to 0.37 logMAR) in all patients, 1.12 logMAR (1.64 logMAR to 0.52 logMAR) in group A, and 0.60 logMAR (0.91 logMAR to 0.31 logMAR) in group B. In 46 eyes (80.7%), postoperative refractive errors were within ±1.00 dioptres (D) of the target refraction, with a mean difference of 0.36D from target refraction. Complications included corneal edema (35.1%), hyphema (26.3%), anterior chamber inflammation (26.3%), vitreous hemorrhage (14%), elevated intraocular pressure (IOP, 12.3%) and cystoid macular edema (CME, 5.3%). All these complications were managed with topical medical therapy and did not require further surgical intervention. One eye from group A was the only eye that developed retinal detachment (RD) or endophthalmitis. No patients had IOL dislocation in the postoperative follow-up period, which ranged from 6 months to 3 years. Retropupillary implantation of an iris clip IOL with pars plana vitrectomy is an efficient, predictable, and stable surgical option for aphakic eyes without capsular support. Postoperative corneal edema, hyphema, and anterior chamber inflammation are common but usually resolve without the need for further surgical intervention.

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