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. 2014 Feb 18;7(1):100-3.
doi: 10.3980/j.issn.2222-3959.2014.01.18. eCollection 2014.

Contrast visual acuity after multifocal intraocular lens implantation: aspheric versus spherical design

Jun-Hua Li  1 , Yi-Fan Feng  2 , Yun-E Zhao  1 , Yin-Ying Zhao  1 , Lei Lin  1
Affiliations

Contrast visual acuity after multifocal intraocular lens implantation: aspheric versus spherical design

Jun-Hua Li et al. Int J Ophthalmol. .

Abstract

Aim: To evaluate contrast visual acuity (CVA) after implantation of an aspheric apodized diffractive intraocular lens (IOL) or a spherical apodized diffractive IOL in cataract surgery.

Method: This prospective randomized controlled study with a 12-month follow-up compared the results of cataract surgery with implantation of an aspheric AcrySof ReSTOR SN6AD3 IOL (30 eyes) and a spherical AcrySof ReSTOR SN60D3 IOL (30 eyes). CVA with best distance correction was measured at 4 contrast levels (100%, 25%, 10% and 5%) under 3 levels of chart luminance [250, 85 and 25 candelas per square meter (cd/m(2))] using a multi-functional visual acuity tester (MFVA-100).

Results: At 12 months after surgery, there were no statistically significant differences in 100% CVA and 25% CVA under 250cd/m(2) (P 100%=0.875 and P 25%=0.057) and 85cd/m(2) (P 100%=0.198 and P 25%=0.193) between the aspheric group and the spherical group. However, the 10% CVA and 5% CVA were significant better in aspheric group than spherical group under 250cd/m(2) (P 10%=0.042 and P 5%=0.007) and 85cd/m(2) (P 10%=0.002 and P 5%=0.039). Under the luminance level of 25cd/m(2), no significant differences was found in the 100% CVA between the 2 group (P 100%=0.245), while aspheric group had better visual acuity in the remaining 3 contracts (P 25%=0.023, P 10%=0.026 and P 5%=0.002, respectively).

Conclusion: [corrected] The aspheric AcrySof ReSTOR SN6AD3 IOL provided patients with better low-contrast visual acuity than the spherical AcrySof ReSTOR SN60D3 IOL.

Keywords: cataract surgery; contrast sensitivity; intraocular lens; visual acuity.

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Figures

Figure 1
Figure 1. Between-group comparison of mean contrast visual acuity under the luminance level of 250cd/m2 at 12 months postoperatively.
Figure 2
Figure 2. Between-group comparison of mean contrast visual acuity under the luminance level of 85cd/m2 at 12 months postoperatively.
Figure 3
Figure 3. Between-group comparison of mean contrast visual acuity under the luminance level of 25cd/m2 at 12 months postoperatively.
See this image and copyright information in PMC

References

    1. Montés-Micó R, España E, Bueno I, Charman WN, Menezo JL. Visual performance with multifocal intraocular lenses; mesopic contrast sensitivity under distance and near conditions. Ophthalmology. 2004;111(1):85–96. - PubMed
    1. Alfonso JF, Fernández-Vega L, Baamonde MB, Montés-Micó R. Prospective visual evaluation of apodized diffractive intraocular lenses. J Cataract Refract Surg. 2007;33(7):1235–1243. - PubMed
    1. Zelichowska B, Rekas M, Stankiewicz A, Cerviño A, Montés-Micó R. Apodized diffractive versus refractive multifocal intraocular lenses: optical and visual evaluation. J Cataract Refract Surg. 2008;34(12):2036–2042. - PubMed
    1. Alió JL, Plaza-Puche AB, Piñero DP, Amparo F, Rodríguez-Prats JL, Ayala MJ. Quality of life evaluation after implantation of 2 multifocal intraocular lens models and a monofocal model. J Cataract Refract Surg. 2011;37(4):638–648. - PubMed
    1. Zhang F, Sugar A, Jacobsen G, Collins M. Visual function and spectacle independence after cataract surgery: bilateral diffractive multifocal intraocular lenses versus monovision pseudophakia. J Cataract Refract Surg. 2011;37(5):853–858. - PubMed

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