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

Purpose: To investigate the long-term rotational stability of AcrySof IQ Toric intraocular lens (IOL) in cataract patients with myopia. Methods Retrospective case series 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.