Refractive lens exchange with foldable toric intraocular lens

Abstract

Purpose: To assess visual and refractive outcomes, and rotational stability after refractive lens exchange (RLE) with toric intraocular lens (IOL) implantation to correct ametropia and preexisting astigmatism.

Design: Prospective, nonrandomized, observational case series (self-controlled).

Methods: This prospective, nonrandomized, and self-controlled study included 32 eyes of 19 consecutive patients with more than 1.00 diopter (D) of preexisting corneal astigmatism having RLE with AcrySof Toric IOL implantation (Alcon Laboratories Inc, Fort Worth, Texas, USA). Uncorrected visual acuity (UCVA), best-corrected visual acuity (BCVA), refractive sphere, and keratometric and refractive cylinder were recorded preoperatively and 6 months after surgery. Toric IOL axis shift was also measured. A patient satisfaction, visual phenomena, and spectacle dependency questionnaire was also carried out.

Results: At 6 months postoperatively, UCVA was 20/32 or better in 100% of the eyes, with 84.3% achieving 20/25 or better. One hundred percent of eyes achieved 20/25 or better BCVA. No eye lost >or=2 lines, 1 eye lost 1 line, 16 eyes did not change, 4 eyes gained 1 line, and 11 eyes gained >or=2 lines of BCVA after the surgery. Mean refractive cylinder was reduced significantly after surgery from -2.46 +/- 0.99 D to -0.53 +/- 0.30 D (P < .001). Vector analysis to compare attempted vs achieved correction showed that 100% of eyes were within +/- 1.00 D for the spherical equivalent, and 100% of eyes were within +/-0.50 D for the astigmatic components (J(0) and J(45)). Mean toric IOL axis rotation was 0.90 +/- 1.76 degrees, being <or= 5 degrees in 96.8% of eyes evaluated. Patients were satisfied with their vision without reporting severe visual phenomena (from none to moderate).

Conclusions: RLE with toric IOL implantation showed good visual and refractive outcomes for correcting spherical and cylindrical refractive errors.