Long-term efficacy of Acrysof Toric intraocular lens implantation in cataract surgery

Objective To evaluate the long-term clinical efficacy and rotational stability of the Acrysof Toric intraocular lens (IOL) in correcting preoperative astigmatism in cataract patients.Methods This retrospective and nonrandomized 24-month or longer follow-up study included 23 eyes of 21 patients having phacoemulsification cataract surgery with implantation of an Acrysof Toric IOL.The uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), preoperative corneal astigmatism, preoperative refractive cylinder, residual refractive cylinder, postoperative corneal astigmatism and Toric IOL axis were measured.Preoperative and postoperative data were compared with a paired t test.Results The UCVA (logMAR) was 0.16±0.13 and BCVA (logMAR) was 0.06±0.09at final follow-up.The mean refractive cylinder decreased significantly after surgery from (-2.98±1.22)Dto (-0.57±0.78)D (t=6.371, P＜0.05).There was no significant difference between preoperative [(-0.53±0.70)D] and postoperative corneal astigmatism.The anticipated residual refractive cylinder and the virtual refractive cylinder showed no statistical difference.The mean rotation of the Toric IOL was 2.84°±2.66° at final follow-up.One eye (4％) had an IOL rotation of 7°,the remaining eyes (96％) had an IOL rotation of less than 5°.Conclusion The results indicate that Acrysof Toric IOL implantation show good long-term clinical efficacy and rotational stability.It is a safe, effective and predictable method for managing astigmatism in cataract patients. Key words: Lenses,intraocular,toric;  Astigmatism;  Stability,rotational;  Phacoemulsification