[Clinical observation of visual quality after implantation of toric intraocular lens].

OBJECTIVE

To observe the visual quality after implantation of Acrysof toric intraocular lens (IOL) in cataract patients.

METHODS

Eighty eyes (60 patients) had implantation of Acrysof toric IOL in our hospital between Oct. 2009 and Sep. 2010. The patients were divided into four groups according to the toric models (T3, T4 and T5). The uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), residual cylinders, contrast sensitivity, high order aberration and IOL axis were evaluated preoperatively and 3 months postoperatively. Sixty-five eyes (45 patients) had implantation of Acrysof Natural IOL.

RESULTS

The UCVA improved in the toric groups three months postoperatively. The UCVA of group T5b was lower than that of the other three groups. The UCVA of toric group was (0.19 ± 0.14) which was better than that of the control group (t = 4.04, P < 0.05). The residual cylinder was (1.69 ± 0.68) D in group T5b, which was statistically different from the other three groups. The residual cylinder of the toric group was (0.51 ± 0.78) D, which was much lower than the control group (t = 2.54, P < 0.05). The difference of contrast sensitivity between the four toric groups was not statistically significant. The low-order aberration and coma of group T5b was higher than that of the other three groups. The difference of contrast sensitivity between the toric group and the control group was not statistically significant. The low-order aberration and coma of the toric group were lower than those of the control group. The IOLs in 67 eyes (83.75%) rotated less than 5 degrees and all IOLs rotated less than 10 degrees.

CONCLUSION

Implantation of the AcrySof toric IOL proves to be an effective, safe, and stable method of managing corneal astigmatism in cataract patients and provides good visual quality.