Visual and refractive status at different focal distances after implantation of the ReSTOR multifocal intraocular lens

Blaylock, John F; Si, Zhaomin; Vickers, Cheryl

doi:10.1016/j.jcrs.2006.04.011

Cited by 137 publications

(106 citation statements)

References 20 publications

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“…In our study, uncorrected intermediate visual acuity and best corrected far visual acuity among patients in the Restor™ group was in agreement with the results of Blaylock et al (25) , where mean visual acuity was 20/36 and 20/38 respectively. However, the same study found better intermediate visual acuity with monofocal SA60AT lenses compared to Restor™ lenses, which was not observed in our study for the assessed distances.…”

Section: Sn60at/sn60wf (N=32) Restor (N=16) Tecnis Mf (N=23) Independsupporting

confidence: 93%

“…The good uncorrected near vision obtained in the Restor™ group can be explained by the fact that this lens has an addition power of +4.0 D in its diffractive structure (+3.5 diopters in the glasses plane). This may also explain the fact that corrected near vision was better in the Restor™ group, as the adding power in the monofocal group was limited to +3.0 D.In our study, uncorrected intermediate visual acuity and best corrected far visual acuity among patients in the Restor™ group was in agreement with the results of Blaylock et al (25) , where mean visual acuity was 20/36 and 20/38 respectively. However, the same study found better intermediate visual acuity with monofocal SA60AT lenses compared to Restor™ lenses, which was not observed in our study for the assessed distances.…”

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confidence: 92%

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Elaboração e validação do questionário de satisfação dos pacientes pseudofácicos em português

Hida¹,

Nakano²,

Yamane³

et al. 2013

Rev. bras.oftalmol.

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Purpose: Development and validation of quality of life questionnaire in pseudophakic patients in Portuguese. Methods: The modified Cataract TyPESpecification questionnaire was specifically developed to assess quality of life after cataract surgery, functional status evaluated with 10 items and contains 18 questions. All questions were applied by a single examiner, with the goal of graduating visual satisfaction from 0 to 10 (0 means very dissatisfied, 5 neutral, 10 very satisfied).This prospective comparative study included 142 eyes of 71 patients in Sao Paulo University. The ophthalmologic evaluation performed included near, intermediate and distance corrected and uncorrected visual acuity and quality of life questionaire. The minimum follow-up was 6 months. Results: The mean age of patients was 60.7± 6.6 years in theTecnis ® MF, 63.1 ±4.4 years in-groupRestor ® 63.7±4.2 years in-group SN60AT/SN60WF. Uncorrected and distance-corrected near visual acuity were statistically higher in theRestor ® and Tecnis ® groups compared to the SN60AT/SN60WF group (p<0.001). There were no statistical differences between groups comparing uncorrected and best-corrected distance visual acuity (p=0.56). Satisfaction questionnaire showed high glasses independence fortheTecnis ® MF (9.3 /10) and Restor ® (8.7 /10) INTRODUCTIONP hacoemulsification and IOL implantation using increasingly smaller incisions have allowed rapid visual recovery with low rates of complications in the hands of experienced surgeons, as well as good quality of vision in the postoperative period. Assessment of the quality of vision can be done through various tests, such as those assessing contrast sensitivity, which is the ability to distinguish the details of images and depends on ambient brightness (1)(2)(3)(4) .In order to provide additional benefits to the visual quality of pseudophakic patients, intraocular lenses (IOLs) have been refined using an aspherical lens design to correct positive spherical aberrations of the cornea (5)(6)(7)(8) . One such aspherical lens is the SN60WF lens, developed from the SN60AT lens, both produced by Alcon Laboratories (Fort Worth, Texas, USA). The former provides greater reduction in spherical aberrations with better vision in low light conditions and increased contrast sensitivity in the postoperative period compared to the latter (5,6,9) .Monofocal IOLs are traditionally used for intraocular implants in cataract surgery. Do to their lack of optical correction, they do not provide a satisfactory depth of focus at varying distances. Despite the potential benefits of multifocal IOLs, their indications are still limited (10,11) .More advanced multifocal IOLs aim to provide contrast sensitivity similar that accepted for monofocal IOLs and to induce minimal optical aberrations. However, the scientific literature reports a loss of contrast sensitivity and functional vision associated with photic phenomena that affect patient satisfaction (12,13) .The aim of this study was to develop and evaluate a quality of life qu...

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Section: Sn60at/sn60wf (N=32) Restor (N=16) Tecnis Mf (N=23) Independsupporting

confidence: 93%

supporting

confidence: 92%

Elaboração e validação do questionário de satisfação dos pacientes pseudofácicos em português

Hida¹,

Nakano²,

Yamane³

et al. 2013

Rev. bras.oftalmol.

View full text Add to dashboard Cite

show abstract

“…In this study, the subjective near visual acuity of the ReSTOR group was better than that of the IQ group like in another study [1][2][3][4][5][6]. However, we could not prove this with objective tools such as OQAS.…”

Section: Discussioncontrasting

confidence: 71%

“…Several studies have evaluated the multifocal function of the ReSTOR by measuring the distance visual acuity and near visual acuity of patients who had cataract surgery with implantation of the lens. [1][2][3][4][5][6] However, they have a weakness in that they depend on the subjective visual acuity of the patients. Recently, Kim et al reported on the testing of the multifocal function of multifocal IOLs including ReSTOR using an optical bench system [7].…”

Section: Introductionmentioning

confidence: 99%

Double-Pass System (Optical Quality Analysis System) for Analysis of the Multifocal Function of a Diffractive Multifocal Intraocular Lens (Acrysof ReSTOR®) Compared to a Monofocal Intraocular Lens (Acrysof IQ®)

Hwang

Shin

Joo

2014

Journal of the Optical Society of Korea

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In this study, we objectively determined whether the ReSTOR as a multifocal IOL (intraocular lens) has a multifocal function compared to the IQ as a monofocal IOL in vivo by OQAS (Optical Quality Analysis System). Eighteen patients who had cataract surgery with implantation of ReSTOR (27 eyes) and 15 patients with IQ (21 eyes), were included inthis study. Uncorrected distance visual acuity (UCDVA), corrected distance visual acuity (CDVA), uncorrected near visual acuity (UCNVA)and distance corrected near visual acuity (DCNVA) were measured. After setting the artificial pupil size to 3 mm, we performed 'Optical quality'. We inputted defocusdiopters of (objective spherical refraction)(far), (objective spherical refraction-1.25 D)(intermediate),(objective spherical refraction-2.5 D)(near), and (objective spherical refraction-3.5 D)(very near) into 'selected spherical refraction' simulating theoptical quality at far, intermediate, and near distance. We changed the pupil size to 5 mm and repeated thesame measurements. The UCDVA and CDVA did not show significant differences between the 2 groups. But, theUCNVA and DCNVA of the ReSTOR group were better than those of the IQ group (p=0.000, p=0.000). For 3 mm pupil, at far distance, modulation transfer function (MTF) cut off and point spread function (PSF) width at 50% of ReSTOR were worse than those of IQ (p=0.039, p=0.020). At intermediate distance, MTF cut off, Strehl ratio and PSF width at 50% of ReSTOR were worse than those of IQ (p=0.001, p=0.001, p=0.000). At near distance, MTF cut off of ReSTOR was worse than that of IQ (p=0.033). At very near distance, MTF cut off and Strehl ratio of ReSTOR were worse than those of IQ (p=0.002, p=0.002), but PSF width at 50% of ReSTOR was better than that of IQ. For 5 mm pupil, most parameters at each distance, there was no significant difference between the 2 groups. Only PSF width at 50% of ReSTOR were worse than those of IQ at intermediate distance (p=0.013). It was impossible to show the multifocal function of ReSTOR compared to the IQ byOQAS.

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“…Diffractive MF IOLs have concentric optical zones with different dioptric power, enabling patients to have good visual acuity at multiple focal points [3]. The drawbacks associated with this type of IOL design are loss of contrast sensitivity, increase in higher order aberrations, and night-time glare and halos [8,9]. Aychoua et al [10] recently reported a clinically relevant reduction of visual sensitivity as assessed with standard automated perimetry in patients with MF IOL.…”

Section: Discussionmentioning

confidence: 99%

The impact of multifocal intraocular lens in retinal imaging with optical coherence tomography

et al. 2014

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Multifocal intraocular lenses (MF IOLs) have concentric optical zones with different dioptric power, enabling patients to have good visual acuity at multiple focal points. However, several optical limitations have been attributed to this particular design. The purpose of this study is to access the effect of MF IOLs design on the accuracy of retinal optical coherence tomography (OCT). Cross-sectional study conducted at the Refractive Surgery Department of Central Lisbon Hospital Center. Twenty-three eyes of 15 patients with a diffractive MF IOL and 27 eyes of 15 patients with an aspheric monofocal IOL were included in this study. All patients underwent OCT macular scans using Heidelberg Spectralis Ò . Macular thickness and volume values and image quality (Q factor) were compared between the two groups. There were no statistically significant differences between both groups regarding macular thickness or volume measurements. Retinal OCT image quality was significantly lower in the MF IOL group (p \ 0.01). MF IOLs are associated with a significant decrease in OCT image quality. However, this fact does not seem to compromise the accuracy of spectral domain OCT retinal measurements.

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Visual and refractive status at different focal distances after implantation of the ReSTOR multifocal intraocular lens

Cited by 137 publications

References 20 publications

Elaboração e validação do questionário de satisfação dos pacientes pseudofácicos em português

Elaboração e validação do questionário de satisfação dos pacientes pseudofácicos em português

Double-Pass System (Optical Quality Analysis System) for Analysis of the Multifocal Function of a Diffractive Multifocal Intraocular Lens (Acrysof ReSTOR®) Compared to a Monofocal Intraocular Lens (Acrysof IQ®)

The impact of multifocal intraocular lens in retinal imaging with optical coherence tomography

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