Long-term rotationalstability of AcrySof IQ Toric intraocular lens in cataract patients with myopia: a retrospective case study

Purpose: To investigate the long-term rotational stability of AcrySof IQ Toric intraocular lens (IOL) in cataract patients with myopia. Methods: Retrospective case study. In total, 120 eyes of 78 cataract patients with axial length (AL) 24–30 mm, corneal astigmatism ≥ 1.50 D and implantation of AcrySof IQ Toric IOL guided by the Version navigation system were collected. According to the AL, they were assigned to two groups: group A, 60 eyes with high myopia (AL ≥ 26 mm); group B, 60 eyes with low to moderate myopia (24 mm ≤ AL < 26 mm) The preoperative eye axis, best-corrected distance visual acuity (BCDVA), corneal astigmatism, IOL rotation at 24–48 months after operation, the proportion of eyes with IOL rotation less than 5° and 10°, rotation direction and residual astigmatism were recorded. Results: The mean follow-up period was 34.27±4.98 months and the mean rotation degree was 2.73±1.29°. The rotation degree of Group A (2.87±1.31°) was slightly higher than that of Group B (2.59±1.27°), with no statistical significance ( P > 0.05). There was no significant difference in IOL rotation between the two groups at 24–36 months or 36–48 months postoperation ( P > 0.05). The ratio of rotation ≤ 5° was 98.22%, with no patients with a rotation > 10°. The postoperative BCDVA was 0.13±0.03 LogMAR, which was significantly higher than that preoperation ( X 2 = 76.79, P < 0.05). The mean corneal astigmatism preoperation was 2.17±1.08 D, while the residual astigmatism postoperation was 0.41±0.26 D, which was statistically significantly lower ( t =4.281, P < 0.05). Conclusion: AcrySof Toric IOL can effectively correct corneal astigmatism in cataract patients with myopia and has good long-term rotational stability.