Implantation of Sutureless Scleral-Fixated Carlevale Intraocular Lens (IOL) in Patients with Insufficient Capsular Bag Support: A Retrospective Analysis of 100 Cases at a Single Center

<b>Background/Objectives</b>: Different surgical techniques are available in cases of missing or insufficient capsular bag support. Next to the anterior chamber or iris-fixated intraocular lenses (IOL), the implantation of the Carlevale IOL provides a sutureless and scleral fixated treatment method. <b>Methods</b>: In a retrospective single-center study, the perioperative data of 100 patients who consecutively received a scleral fixated Carlevale IOL combined with a 25 gauge (G) pars plana vitrectomy between September 2021 and June 2024 were investigated. The intraoperative and postoperative results were analyzed in terms of complication rates and refractive outcomes. <b>Results</b>: IOL dislocation was the most common surgical indication (50%) for sutureless Carlevale IOL implantation, followed by postoperative aphakia in 35 patients (35%). Nearly every fourth patient (24%) had a preoperative traumatic event, and 21% had pseudoexfoliation (PEX) syndrome. The average surgery time was 60.2 (±20.1) min. Intraoperative intraocular hemorrhage occurred in seven cases, and IOL haptic breakage in two patients. Temporary intraocular pressure fluctuations represented the most common postoperative complications (28%). Severe complications such as endophthalmitis or retinal detachment were not observed in our cohort. The mean refractive prediction error was determined in 67 patients and amounted to an average of -0.7 ± 2.0 diopters. The best corrected visual acuity (BCVA) at the last postoperative follow-up showed an improvement of 0.2 ± 0.5 logMAR (<i>n</i> = 76) compared to the preoperative BCVA (<i>p</i> = 0.0002). The postoperative examination was performed in 72% of the patients, and the mean follow-up period amounted to 7.2 ± 6.4 months. <b>Conclusions</b>: Overall, sutureless and scleral fixated implantation of the Carlevale IOL represents a valuable therapeutic option in the treatment of aphakia and lens as well as IOL dislocation in the absence of capsular bag support with minor postoperative complications and positive refractive outcomes.