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Visual function after implantation of a diffractive aspheric trifocal intraocular lens

Abstract

Purpose

To evaluate distance, intermediate, and near vision after bilateral implantation of a diffractive aspheric trifocal intraocular lens (IOL).

Methods

This study enrolled 204 eyes of 102 patients who had bilateral implantation of the AT LISA tri 839MP IOL. Monocular and binocular uncorrected distance visual acuity (UDVA) and corrected distance visual acuity (CDVA) (4 meters), monocular and binocular uncorrected near visual acuity (UNVA) and distance-corrected near visual acuity (DCNVA) (30, 40 centimeters), binocular uncorrected intermediate visual acuity (UIVA) and distance-corrected intermediate visual acuity (DCIVA) (50, 60, 70 centimeters), the defocus curve, and binocular photopic and mesopic contrast sensitivity with and without glare were evaluated over 6 months.

Results

No statistically significant differences in visual acuity outcomes between follow-up visits were found at any distance evaluated (p>0.05). Six months postoperatively, the mean monocular UDVA and UNVA were comparable to preoperative CDVA and DCNVA, respectively. All patients achieved a binocular CDVA of 20/25 or better. The mean binocular DCIVA ranged from 0.11 ± 0.11 (70 cm) to 0.07 ± 0.11 logMAR (50 cm). The mean binocular DCNVA was 20/25 or better in nearly 87% of patients. The defocus curve showed a wide range of useful vision, with no statistically significant differences in visual acuity at intermediate distances (p = 0.151). Mesopic contrast sensitivity was lower than under photopic conditions, particularly at medium and high spatial frequencies (p<0.001).

Conclusions

Bilateral implantation of this trifocal IOL provides good visual outcomes at far, intermediate, and near distances, being an effective solution to reduce spectacle dependence after lensectomy.

Eur J Ophthalmol 2016; 26(5): 405 - 411

Article Type: ORIGINAL RESEARCH ARTICLE

DOI:10.5301/ejo.5000741

Authors

José F. Alfonso, Luis Fernández-Vega Cueto, Lurdes Belda-Salmerón, Robert Montés-Micó, Luis Fernández-Vega

Article History

Disclosures

Financial support: Supported in part by a Ministerio de Educación, Cultura y Deporte Research Scholarship to Lurdes Belda-Salmerón (FPU#AP2010-2107#).
Conflict of interest: None of the authors has conflict of interest with this submission.

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Authors

Affiliations

  • Fernández-Vega Ophthalmological Institute, Oviedo - Spain
  • Surgery Department, School of Medicine, University of Oviedo, Oviedo - Spain
  • GIO, Optics and Optometry and Vision Sciences Department, Faculty of Physics, University of Valencia, Oviedo - Spain

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