Results of the implantation of an aspheric toric intraocular lens for the correction of astigmatism in cataract surgery

Resumen

OBJECTIVE: The aim of this study was to evaluate correction of astigmatism following implantation of the TECNIS® Toric IOL. SETTING: University Hospital Quirón, Madrid (Spain) METHODS: Inclusion criteria were age over 45 years, loss of vision due to cataract, and regular corneal astigmatism > 0.75 diopters. Exclusion criteria included ocular pathology or previous surgery. The cylinder power of the IOL and the position of the axis were determined using an online calculator supplied by the manufacturer. Postoperative evaluation was performed on day 1, 1 week, 1 month and 3 months after surgery. Uncorrected (UDVA) and corrected (CDVA) visual acuity, slit lamp examination, IOL axis, applanation tonometry and funduscopy were all assessed. Intraocular rotation of the IOL was measured with a slit lamp using a scale that overlapped the markings on the anterior side of the IOL. RESULTS: Fifty-three eyes of 44 patients (25 men and 19 women) were included. Mean age was 62.9 years. At 3 months after surgery, the mean logMAR UDVA was 0.08 ± 0.13 and the mean logMAR CDVA was 0.04 ± 0.13. CDVA was between 20/40 and 20/30 (0.3 - 0.18 logMAR) in 51 eyes (96.23%), only 2 eyes (3.77%) had a CDVA below 20/40 (> 0.3 logMAR). CONCLUSION: The results of our study show that implantation of the TECNIS® Toric IOL is effective, predictable and stable for the correction of regular corneal astigmatism during cataract surgery