Trans-scleral plugs fixated IOL: a new paradigm for sutureless scleral fixation

Abstract

Purpose: To assess the surgical and refractive outcomes of a new technique of sutureless scleral fixation (SSF) using a single-piece foldable acrylic intraocular lens (IOL) (Carlevale).

Setting: Department of Translational Surgery and Medicine, Ophthalmology, University of Florence, Careggi, Florence, Italy.

Design: Prospective observational case series.

Methods: Thirty-two eyes of 32 patients with aphakia, dislocated IOL, or subluxated lens who underwent SSF with a novel single-piece hydrophilic acrylic IOL were studied. Preoperative and postoperative refractive status and complications during and after surgery were recorded. The IOL tilt was evaluated using anterior segment optical coherence tomography (AS-OCT).

Results: Twenty-two eyes were IOL/bag luxations, 9 were aphakia, and 3 were subluxated crystalline lens. Mean preoperative corrected distance visual acuity was 0.46 ± 0.29 logarithm of the minimum angle of resolution (logMAR) and improved to 0.13 ± 0.12 logMAR (P < .05) at the 8-month follow-up, with a predictive error spherical equivalent of -0.24 ± 0.81 diopters (D); the IOL tilt was 2.08 ± 1.19 degrees. One patient (3.1%) experienced transient cystoid macular edema, and 1 (3.1%) experienced vitreous hemorrhage; pigment dispersion with AS-OCT findings of reverse pupillary block was found in 2 (6.2%) eyes. IOL dislocation, conjunctival erosion, and plug externalization were not observed in any eye during the follow-up.

Conclusions: SSF using the novel IOL could be a viable option for the management of aphakia, lens subluxation, and IOL-bag complex dislocation with unique characteristics of stability. The advantages of this technique were the absence of haptic manipulation, self-centration, and firm fixation of the IOL.