Clinical Effects Of Acrysof Toric Intraocular Lens Implantation For Correcting Cataract Patients With Low Corneal Astigmatism

To compare the clinical effects of AcrySof toric intraocular lens (IOL) and the non-toric IOLs in cataract patients with low corneal astigmatism. 

Department of Ophthalmology, Liaoning Aier Eye Hospital, China. 

In this retrospective cohort study, a total of 82 eyes of 81 patients with age related cataract who were diagnosed as low regular corneal astigmatism(0.75D~1.5D) were enrolled. The patients were implanted with either the AcrySof IQ T2/T3 Toric IOLs (Toric group, n=48) or the AcrySof IQ IOLs (Non-toric group, n=34) after cataract phacoemulsification. Postoperative residual astigmatism, uncorrected distance visual acuity (UDVA) and best-corrected distance visual acuity (BCDVA) were evaluated in both groups. Data were statistically analyzed using the independent samples T-test, the Chi-squared test and the non-parametric rank sum test. 

There was no statistically significant difference between the two groups in the age, sex, preoperative UDVA, BCDVA, corneal astigmatism, spherical equivalent and axial length (P＞0.05). The median absolute value of residual astigmatism was significantly lower in the Toric group (0.50D) than the non-Toric group (1.00D) (P=0.000). The proportion of eyes with residual astigmatism less than 0.25D was significantly higher in the Toric group (37.50%) than the non-Toric group (11.76%) (P=0.010). The proportion of eyes with residual astigmatism less than 0.5D was also significantly higher in the Toric group (70.83%) than the non-Toric group (14.71%) (P=0.000). The median rotation of Toric IOL at 3 months after operation was 2 degrees.

Compared with non-Toric IOLs, the use of Toric IOLs effectively reduced postoperative residual astigmatism and improved patients’ visual quality.