Evo Toric Icl Rotational Stability: Objective Analysis Of Lens Position

This study aims to evaluate the rotational stability, refractive predictability, and visual outcomes of toric EVO ICL implants, emphasizing their efficacy and safety in correcting astigmatism and myopia.

The research was conducted in a specialized ophthalmic surgery center, focusing on refractive error corrections using toric EVO ICL lenses.

The methodology included preoperative and postoperative assessments of visual acuity, subjective refraction, corneal topography, and anterior segment OCT. Lenses were selected based on specific calculations, and the implantation process utilized advanced digital centration techniques. Postoperative evaluations were conducted at 1

The study found a low surgically induced astigmatism (SIA) with a mean of 0.32 D, and a refractive SIA average of 2.02 D, closely matching the preoperative refractive astigmatism mean of 2.07 D, resulting in a correction index (CI) of 0.96. Rotational stability was high, with 72% of lenses showing less than 5° rotation and 96% under 10° at the one-month follow-up. No significant correlations were observed between lens rotation and postoperative vault size or horizontal compression, indicating independent factors. The discrepancy between theoretical and observed rotations suggested the calculation method slightly underestimated actual rotation, which did not significantly affect visual outcomes. 

Toric EVO ICL implants provide high rotational stability, excellent refractive predictability, and satisfactory visual outcomes. The study underscores the importance of precise implantation and the minimal influence of lens rotation on postoperative refractive errors, highlighting the lenses' effectiveness in astigmatism correction.