ArticleKorean journal of ophthalmology : KJO2026
Modified Four-Flanged Intrascleral Fixation of Foldable Intraocular Lenses Using a 1-Inch, 30-Gauge Needle for Extraocular Suture Threading.
Article in Korean journal of ophthalmology : KJO, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeTo evaluate the efficacy and safety of modified four-flanged intrascleral fixation of foldable intraocular lenses (IOLs) using a 1-inch 30-gauge needle for extraocular suture threading.
methodsThis retrospective case series included 20 eyes of 20 patients who underwent four-flanged intrascleral IOL fixation using a 1-inch 30-gauge needle, with at least 6 months of follow-up. We modified the original Canabrava technique by inserting a foldable IOL through a 2.4-mm clear corneal incision with a standard injector and performing extraocular suture threading with a 1-inch 30-gauge needle. Collected data included uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), intraocular pressure, spherical equivalent (SE), prediction error (PE), and corneal and lens astigmatism. Postoperative complications and IOL centration were also evaluated.
resultsVisual acuity improved significantly over the 6-month follow-up; mean preoperative logMAR UCVA was 1.25 ± 0.66 (Snellen equivalent, 20 / 355) and improved to 0.35 ± 0.19 (20 / 45), and logMAR BCVA improved from 0.53 ± 0.38 (20 / 70) to 0.15 ± 0.09 (20 / 30) (p < 0.05). The mean postoperative SE at 6 months was -0.61 ± 1.08 diopters, and PE was -0.25 ± 0.86 diopters. No significant changes in endothelial cell density were observed. Corneal astigmatism remained stable, and lens astigmatism was reduced after surgery, although not significantly. Postoperative complications included one case each of hypotony and vitreous hemorrhage, both resolved with medical therapy. No IOL redislocation, decentration, tilt, or flange-related issues occurred.
conclusionsModified four-flanged intrascleral IOL fixation using a 1-inch 30-gauge needle provides stable IOL fixation by pairing a robust suture with the smallest suitable needle. Extraocular suture threading reduces intraocular manipulation, simplifying the procedure and resulting in favorable visual outcomes and low complication rates.
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