Results of two different techniques for subluxated one-piece intraocular lenses: Modified Yamane technique versus modified double-flange technique

Abstract

Purpose

To compare the modified Yamane (MY) technique with the modified double-flange (MDF) technique in the management of subluxated single-piece foldable intraocular lenses (IOLs).

Methods

This retrospective study was conducted on 29 eyes (group MY:17 eyes, group MDF:12 eyes). In both techniques, the subluxated IOLs were moved to the anterior chamber, and anterior vitrectomy was performed. In group MY, the IOL was extracted using an approach similar to the “twist-and-out” technique without enlarging the main incision.The surgery was performed by creating a scleral tunnel 2.5 mm posterior to the limbus using a 26-gauge injector.In group MDF,a 6.0 polypropylene suture was passed through the widest part of the haptic near the optical portion using a 27-gauge injector guide. Visual, refractive results and complications of the two groups were compared.

Results

Both groups exhibited significant improvement in corrected distance visual acuity.No differences were observed between the groups in terms of spherical refraction, spherical equivalent, surgical time, or intraocular pressure values (p > 0.05 for all). Cylindrical refraction was −1.21 ± 0.14 D in group MY and −1.76 ± 0.25 D in group MDF(p = 0.03).The pseudophacodonesis score was 0.45 ± 0.15 in group MY compared to 1.21 ± 0.55 in group MDF (p < 0.001).Central macular thickness was similar between the two groups preoperatively, while at 6 months postoperatively, it measured 251 ± 15 μm in group MY and 274 ± 18 μm in group MDF (p = 0.19 and p = 0.01).

Conclusion

To our knowledge, this study is the first to compare the MY and MDF techniques for subluxated IOLs. Both techniques showed similar efficacy and safety. However, group MY demonstrated better and more stable IOL centration.