ESCRS - PO525 - Interim Results Of A Prospective Randomized Study Comparing The Yamane Technique And The 4-Flanged Technique In Eyes Without Capsular Support.

Interim Results Of A Prospective Randomized Study Comparing The Yamane Technique And The 4-Flanged Technique In Eyes Without Capsular Support.

Published 2024 - 42nd Congress of the ESCRS

Reference: PO525 | Type: Free paper | DOI: 10.82333/j9ys-c827

Authors: Markus Schranz* 1 , Daniel Schartmüller 1 , Ioanna Dimakopoulou 1 , Marcus Lisy 2 , Victor Danzinger 1 , Claudette Abela-Formanek 1

1Medical University of Vienna,Vienna,Austria, 2Medical University of Vienna,vienna,Austria

Purpose

To evaluate the 1-month interim results in eyes that underwent scleral fixation using the Yamane technique (Avansee Preset IOL, Kowa) or the 4-flange technique (Micropure 123; PhysIOL IOL).

Setting

Prospective, randomized, longitudinal, single-centre study at a tertiary referral center.

Methods

Patients without capsular support who were scheduled for intrascleral IOL implantation were randomly assigned to receive either the Yamane or the 4-flange technique. They were then followed up for a period of 3 years. During the 1-month postoperative interim analysis, we evaluated the following parameters: lens decentration, tilt, and effective lens position (ELP). These parameters were assessed using anterior segment optical coherence tomography (AS-OCT). Postoperative complications, including hypotony, glaucoma, inflammation, and Irvine-Gass syndrome, were evaluated based on clinical findings.

Results

The study included 50 eyes of 50 patients, with 25 eyes of 25 patients in the Yamane group (YG) and 25 eyes of 25 patients in the 4-flange group (FG).

At 1 month, visual acuity was 0.75sn±0.23 in YG and 0.78sn±0.2 in FG.

Intraocular lens tilt and decentration were 8.7°±3.7 and 0.58mm±0.33 in the YG group, respectively, compared to 7.2°±2.0 and 0.61mm±0.47 in the FG group. The anterior chamber depth (ACD) was 4.50mm±0.40 in the YG group and 4.69mm±0.36 in the FG group.

One patient in the FG group presented with postoperative hypotony, while one patient in the YG group presented with vitreous haemorrhage.

The incidence of cystoid macular edema was similar in both groups, with two newly diagnosed edemas in the YG group and three in the FG group.

Conclusions

Both methods demonstrated excellent postoperative visual acuity and IOL stability, taking into account IOL tilt and decentration. The incidence and severity of postoperative complications were comparable in both groups.