AIM: To assess the postoperative outcomes of piggyback implantation using Acrysof Toric intraocular lens(IOL)in high myopia combined with corneal astigmatism.

METHODS: Sixty patients who had phacoemulsification with IOL implantation due to high myopia,cataract and corneal astigmatism from January 2010 to June 2013 were randomly divided into observation group(piggyback Toric IOL implantation, both an Acrysoft IQ Toric IOL and a minus foldable acrylic three piece IOL were implanted in the capsular bag, n=30)and control group(foldable IOL implantation, n=30). Postoperative follow-up went on 6mo. Information collected included uncorrected visual acuity(UCVA), IOL position, residual astigmatism and complications.

RESULTS: The UCVA increased from 3.52±0.03 preoperatively to 4.78±0.01 at 6mo postoperatively in the observation group, from 3.51±0.03 preoperatively to 4.30±0.13 at 6mo postoperatively in the control group. The observation group's postoperative UCVA was better than that of the control group. There was statistically significant difference(t=3.612, P<0.05). The preoperative corneal astigmatism was 2.97±0.87(1.70-4.27)D in the observation group and 2.92±0.97(1.50-4.90)D in the control group. The postoperative residual astigmatism was 0.48±0.23(0.25-1.00)D in the observation group and 2.87±1.11(1.00-5.20)D in the control group. There was statistically significant difference postoperatively(t=-11.995, P<0.05)between the two groups. No complications occurred.

CONCLUSION: Piggyback implantation using Toric IOL can help to solve the problem of no matching Toric IOL power for the high myopia combined with corneal astigmatism at the current stage. It improves the UCVA and reduces the astigmatism after the cataract surgery.