Clinical outcomes and rotational stability following implantation of a monofocal toric IOL with textured haptics in normal versus high axial lengths

Abstract

Purpose: To compare the clinical outcomes and rotational stability following implantation of a toric IOL with textured haptics in eyes with normal versus high axial lengths. Study design: Two-arm, retrospective comparative study. Setting: Nethradhama Superspeciality Eye Hospital, Bangalore. Methods: This retrospective study included 114 eyes of 114 patients who underwent femtolaser cataract surgery followed by implantation of the HOYA Vivinex Toric monofocal IOL (Model XY1A-SP), of which 62 and 52 eyes belonged to normal (=/<23.9 mm) and high (=/> 24mm) axial length groups respectively. One week and 3 months post-operatively, clinical outcomes and rotational stability of the toric IOL was evaluated. Results: Three months post-op, % eyes achieving refractive astigmatism accuracy within ≤0.50 D, was 100% (n=62) in the normal versus 94% (n=49) in the high axial length group. All eyes i.e., 100% (n=62) in the normal and 96.15% (n=50) eyes in the high myopia group were <5º of the intended axis. The mean change in post-op rotation from 1 week to 3 months was 0.28 ±0.09º in the normal, and 0.30 ± 1.11º in the high axial length group, p=0.80. No significant correlation was observed between axial length and WTW diameter with 1-week post-op rotation values. No eye required re-positioning of toric IOL for significant misalignment. Conclusion: No significant differences were observed for clinical outcomes and post-op rotational stability between eyes with normal and high axial lengths, suggesting excellent rotational stability of the Vivinex Toric IOL with textured haptics in all eyes, irrespective of the pre-operative axial length measurements.