Modulation transfer function and optical quality after bilateral implantation of a+3.00 D versus a+4.00 D multifocal intraocular lens

作     者：Santhiago, Marcony R. Wilson, Steven E. Netto, Marcelo V. Ghanen, Ramon C. Monteiro, Mario Luis R. Bechara, Samir J. Espana, Edgar M. Mello, Glauco R. Kara-Junior, Newton 

作者机构：Cleveland Clin Fdn Cole Eye Inst Cleveland OH 44195 USA Univ Sao Paulo Dept Ophthalmol Sao Paulo Brazil 

出 版 物：《JOURNAL OF CATARACT AND REFRACTIVE SURGERY》 (白内障与屈光外科学杂志)

年 卷 期：2012年第38卷第2期

页      面：215-220页

核心收录：

学科分类：1002[医学-临床医学] 100210[医学-外科学(含：普外、骨外、泌尿外、胸心外、神外、整形、烧伤、野战外)] 10[医学] 

基　　金：Coordenação de Aperfeiçoamento de Pessoal de Nível Superior  CAPES  (0301/10-8) 

主　　题：modulation transfer function Mesopic Vision STREHL RATIO aspheric lens corrected distance visual acuity Point spread function pupil size Visual Acuity Intraocular Lymphoma 

摘      要：PURPOSE: To determine whether the improvement in intermediate vision after bilateral implantation of an aspheric multifocal intraocular lens (IOL) with a +3.00 diopter (D) addition (add) occurs at the expense of optical quality compared with the previous model with a +4.00 D add. SETTING: Department of Ophthalmology, University of Sao Paulo, Sao Paulo, Brazil. DESIGN: Prospective randomized double-masked comparative clinical trial. METHODS: One year after bilateral implantation of Acrysof Restor SN6AD1 +3.00 D IOLs or Acrysof Restor SN6AD3 +4.00 D IOLs, optical quality was evaluated by analyzing the in vivo modulation transfer function (MTF) and point-spread function (expressed as Strehl ratio). The Strehl ratio and MTF curve with a 4.0 pupil and a 6.0 mm pupil were measured by dynamic retinoscopy aberrometry. The uncorrected and corrected distance visual acuities at 4 m, uncorrected and distance-corrected near visual acuities at 40 cm, and uncorrected and distance-corrected intermediate visual acuities at 50 cm, 60 cm, and 70 cm were measured. RESULTS: Both IOL groups comprised 40 eyes of 20 patients. One year postoperatively, there were no statistically significant between-group differences in the MTF or Strehl ratio with either pupil size. There were no statistically significant between-group differences in distance or near visual acuity. Intermediate visual acuity was significantly better in the +3.00 D IOL group. CONCLUSION: Results indicate that the improvement in intermediate vision in eyes with the aspheric multifocal +3.00 D add IOL occurred without decreasing optical quality over that with the previous version IOL with a +4.00 D add.