Purpose: To evaluate the efficacy and rotational stability of an injectable 1-piece hydrophilic acrylic toric intraocular lens (IOL).
Setting: Department of Ophthalmology, Hillingdon Hospital, Uxbridge, Middlesex, United Kingdom.
Design: Cohort study.
Methods: This study enrolled consecutive patients who had 2.00 diopters (D) or more of preexisting corneal astigmatism. Patients had phacoemulsification with implantation of a T-flex 623T toric IOL through a 2.8 mm astigmatically neutral incision. Uncorrected (UDVA) and corrected (CDVA) distance visual acuities (logMAR), refraction, keratometry, and the cylinder axis of the toric IOL were measured.
Results: Thirty-three eyes of 25 patients were evaluated. The mean preoperative refractive astigmatism was 3.35 D ± 1.20 (SD) and the mean keratometric astigmatism, 3.98 ± 1.89 D, respectively. Four months postoperatively, the mean UDVA was 0.28 ± 0.23 D logMAR, improving to 0.19 ± 0.23 D logMAR CDVA. The mean refractive astigmatism was 0.95 D ± 0.66 D; vector analysis using the Holladay-Cravy-Koch method showed that the mean reduction in refractive astigmatism was 2.94 ± 0.89 D. The mean difference between the intended and the actual final IOL cylinder axis was 3.44 degrees (range 0 to 12).
Conclusions: The toric IOL reduced visually significant keratometric astigmatism and increased spectacle independence after cataract surgery. There were no cases of significant IOL rotation in the capsular bag 4 months postoperatively.
Copyright © 2011 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.