Trifocal toric intraocular lenses in eyes with low amount of corneal astigmatism

AIM: To evaluate the refractive and visual outcomes following cataract surgery and implantation of a trifocal toric intraocular lens(IOL) in eyes with low degrees of corneal astigmatism.METHODS: Twenty-six eyes of 22 patients who underwent implantation a trifocal toric IOL(FineVision PODFT, PhysIOL s.a., Liege, Belgium) were enrolled. Phacoemulsification with femtosecond laser, capsular tension ring insertion and intraoperative aberrometry were performed in all cases. All IOLs used showed a cylinder power of 1.00 D. Main outcome measures were refractive error and corrected-distance visual acuity(CDVA) and uncorrected-distance visual acuity(UDVA) values. Eyes were evaluated at 4 mo post-surgery.RESULTS: Totally 50% of eyes showed a spherical equivalent(SE) within ±0.13 D and all of them within ±0.50 D. The mean SE and refractive cylinder were-0.02±0.23 and-0.16±0.22 D, respectively. Vector analysis revealed that 100% of eyes were within ±0.50 D for the SE and cylindrical components(J0 and J45). Refractive changes were not correlated with keratometric changes(P>0.05) showing that the reduction in astigmatism comes from the trifocal toric IOL. Of 81% and 96% of eyes showed UDVA and CDVA of 20/20, respectively. The postoperative mean values of monocular distance Snellen decimal UDVA and CDVA were 0.97±0.05 and 0.99±0.02(about 20/20), respectively. CONCLUSION: Our study suggests that the use of this trifocal toric IOL in patients with low amount of astigmatism provides accurate refractive outcomes and enables them to achieve excellent visual acuity.