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Toric intraocular lens implantation for astigmatism correction during routine cataract surgery

Poster Details

First Author: M.Bamashmus YEMEN

Co Author(s):                  

Abstract Details



Purpose:

Toric intraocular lens have been designed to compensate preoperative corneal astigmatism. The aim of this study was to assess efficacy, safety and clinical outcomes after implantation of Rayner T-Flex toric intraocular lens to correct preexisting corneal astigmatism in patients having routine cataract surgery.

Setting:

This prospective observational study included eyes undergoing cataract surgery at Yemen Magrabi Eye Hospital between October 2012 and April 2013.

Methods:

This study included eyes that had visually significant cataract with at least 2.00 diopter (D) or greater of preexisting corneal astigmatism. Phacoemulsification was performed using superior incision and all eyes received the insertion and alignment of a Rayner toric foldable intraocular lens. Preoperatively patients were examined for subjective refraction, corneal topography, biometry and slitlamp and fundal examination. Postoperatively, patients were examined for uncorrected distance visual acuity (UDVA), corrected distance visual acuity and manifest refraction. Individual patient satisfaction with uncorrected vision was also documented. The cylinder axis of the toric IOL was determined by dilated slitlamp examination.

Results:

The study enrolled 10 eyes of 7 patients (3 males and 4 females). Corneal topography revealed symmetrical bowtie in 7 eyes and pellucid marginal degeneration in 3 eyes. At 8 weeks, the UDVA was 0.8 or better in 9 of 10 eyes. At 3 months postoperatively, the median reduction in refractive cylinder was statistically significant (P < 0.05). The good UDVA resulted in high levels of patient satisfaction.

Conclusions:

Implantation of the Rayner toric IOL was an effective, safe, and predictable method to manage corneal astigmatism in patients having routine cataract surgery. Our results indicate that toric IOL implantation is a predictable option to correct pre-existing corneal astigmatism with good visual outcomes, stable in time with few rotation postoperatively and good predictive refractive error for distance vision. FINANCIAL INTEREST: NONE

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