Clinical study of Toric intraocular lens for corneal astigmatism correction in cataract patients with prolonged axial length

AIM:To evaluate the clinical outcomes of the Toric intraocular lens(Toric IOL)for correction of corneal astigmatism in cataract patients with prolonged axial length. <p>MEHTODS:This prospective series case study included 64 eyes in 64 patients with corneal astigmatism and cataract. The experimental group consisted of 30 patients with cataract and prolonged axial length. The control group consisted of 34 patients with cataract and normal axial length. The uncorrected distance visual acuity, best corrected distance visual acuity, preoperative corneal astigmatism, predicted residual astigmatism, residual astigmatism and Toric IOL axis rotation were measured preoperatively and post operatively. <p>RESULTS:After the operations, the uncorrected distance visual acuity in the experimental group was 0.06±0.11 and in the control group was 0.03±0.08, both were improved compared to those before the operations(<i>P</i><0.01).But there was no statistically different between the two groups(<i>P</i>>0.05).The residual astigmatism between the two groups(0.44±0.09 <i>vs</i> 0.41±0.08)was no statistically different(<i>P</i>>0.05).The mean IOL axis rotation in experimental group(4.43°±1.36°)was higher than that of the control group(3.59°±1.1°)and the difference was statistically significant(<i>P</i><0.01). <p>CONCLUSION:Toric IOL rotation is greater in eyes with a prolonged axial length. But there is no differences on uncorrected visual acuity, residual astigmatism, compared with patients with normal axial length