Effect of Toric intraocular lens implantation for the correction of regular corneal astigmatism during cataract surgery

Abstract:

AIM:To evaluate toric intraocular lens (IOL) implantation as a treatment of regular corneal astigmatism during phacoemulsification.METHODS:Totally 41 cases(47 eyes) with cataract and corneal astigmatism had toric IOL(22 eyes) or spherical IOL(25 eyes) implantation during phacoemulsification, followed up for 6 months. Uncorrected distance visual acuity (UDVA), postoperative residual astigmatism, complications were analyzed, and effect of two IOLs were compared. Toric IOL axis rotational stability was observedRESULTS:Six months postoperatively, the mean UDVA was 0.73±0.37 in the toric IOL group and 0.47±0.18 in the spherical IOL group, there was statistical significant difference. The postoperative residual astigmatism was 0.53±0.40D in the Toric IOL group and 2.13±0.76D in the spherical IOL group, there was statistical significant difference. The visual acuity and the IOL location of Toric IOL group were both steady. The mean IOL misalignment was 4.22±1.46 degrees.CONCLUSION:Phacoemulsification combined with Toric IOL implantation for cataract and corneal astigmatism patients is effective, predictable and safe in correcting corneal astigmatism.

Key words:cataract; astigmatism; Toric intraocular lens