AIM: To evaluate the rotational stability of AcrySof toric intraocular lens(IOL)after cataract surgery, by an high-precision method.

METHODS: A total of 104 eyes of 90 patients with age related cataract and moderate to high regular astigmatism underwent phacoemulsification and implantation of AcrySof toric IOL(SN6AT series; Alcon, Fort Worth, TX, USA). Patients underwent comprehensive examinations at standard intervals. The rotational stability of AcrySof toric intraocular lens was evaluated using visual quality analyser KR-1W(Topcon, Tokyo, Japan). Uncorrected distance visual acuity(UDVA), corrected distance visual acuity(CDVA)and manifest refraction were also recorded. The outcomes were analysed by paired-samples T test and ANOVA Test.

RESULTS: From preoperatively to the last visit(24mo), 104 eyes were included in the clinical trial. The AcrySof toric IOL axis orientation(at seven visits)did not show significant change, P=0.863. All of the eyes had significant improvement in UDVA(logMAR, 4.39±0.27 to 4.77±0.22; P<0.001), CDVA(logMAR, 4.54±0.25 to 4.93±0.14; P<0.001)and manifest refraction astigmatism \〖diopters(D), -1.27±0.98 to -0.97±0.71, P=0.003\〗. There was an increase in MTF results between preoperative and postoperative evaluations.

CONCLUSION: The AcrySof toric IOL shows good rotational stability. It can reduce manifest refraction cylinder and improve visual acuity and vision-related quality of life permanently.