Rotational Stability Of Two Identical Design And Material Intraocular Lenses But Different Surface Treatment.

To study the postoperative rotational stability of two intraocular lenses (IOLs) of the same design and material, but of different surfaces treatment (polished vs unpolished).

Centre Ophtalmologique IRIDIS, Albi, France.

This retrospective study comprises all patients who were implanted with a polished monofocal Toric IOL (Ankoris, BVI, Belgium) or an unpolished Toric multifocal IOL (FineVision Toric, BVI, Belgium) between 2018 and 2022. Measurement of IOL stability was performed under dilation for all cases at the 1- or 3-months postoperative follow-up. Demographic analysis, as well as preoperative biometric parameters, were compared.

A total of 297 Ankoris and 255 FineVision Toric were included in the study. Significant difference was found for the postoperative rotation, with an average of 2,20 ± 2,20 degrees for the FineVision Toric and 5,80 ± 6,91 degrees (°). Maximum of rotation for the FineVision Toric was 13° and 50° for the Ankoris. No correlation between age, or any biometric parameters were found for both groups.

The multifocal IOL allows better rotational stability than the monofocal IOL. We can conclude that IOL with an unpolished surface are more stable than polished IOL, probably due to increased friction in the capsular bag.