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Influence of ocular residual astigmatism (ORA) in visual results after implantation of toric intraocular lenses for correcting astigmatism

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Session Details

Session Title: Presented Poster Session 22: IOL Technology 1

Session Date/Time: Tuesday 16/09/2014 | 15:00-17:00

Paper Time: 15:45

Venue: Pod 1 (Poster Village)

First Author: : A.Abdelghany SPAIN

Co Author(s): :    A. Vega Estrada   P. Sanz-Díez   J. Alio   A. Plaza-Puche     

Abstract Details


To determine the efficacy of the astigmatism correction following toric phakic IOLs (pIOL) implantation analyzing the preoperative ORA with the Alpins vector method.


Vissum Corporation, Alicante, Spain.


Astigmatism was analyzed in 93 eyes of 60 patients and then divided into two groups depending on the implanted intraocular lens (IOL): ARTIFLEX group, with 50 patients and ICL Group, composed by 43 patients. Astigmatic changes were analysed using the Alpins vectorial method with the ASSORT.


Mean ORA value in each group: was 0.85 ± 0.76 in the ARTIFLEX group and 0.97 ± 0.92 in the ICL group, no significant differences between two groups, p = 0,75. In both types of lenses, the amount of refractive cylinder were significantly reduced, improving uncorrected distance visual acuity (UDVA), p<0,01. Patients with ARTIFLEX achieved a mean UDVA of 0.13 ±0.19 LogMAR, by reducing the mean refractive cylinder to -0.51 ± 0.64 D. In the ICL group, after implantation UDVA improved to 0.24 ± 0.22 LogMAR with a reduction in refractive cylinder to -1.03 ±0.79 D. Astigmatic and UDVA values were significantly better in the group with ARTIFLEX IOL than in the group implanted with ICL IOL, p <0.01. Statistical significant differences were observed in IOS between groups of IOL, p <0.01; where ARTIFLEX group presents results nearer to the ideal value. No significant correlations were found between the ORA with refractive and vectorial parameters.


The ARTIFLEX and ICL toric IOLs show similar refractive results independently of the preoperative ORA value.

Financial Interest:


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