Wavefront Aberrations in Eyes With Acrysof Monofocal Intraocular Lenses

Padmanabhan, Prema; Yoon, Geunyoung; Porter, Jason; Rao, Srinivas K; Roy, Joyita; Choudhury, Mitalee

doi:10.3928/1081-597x-20060301-07

Cited by 24 publications

(9 citation statements)

References 23 publications

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“…The potential benefit of aspheric optics may be highest in patients with 5 mm mesopic pupils or larger, and in those requiring higher dioptric power IOLs. Our results, and others [9,44], show that even more positive SA will be induced with spherical IOLs of higher dioptric power, impairing image quality. While there has been some debate on the impact of IOLs with negative SA in potentially reducing depth of field [36][37][38][39], our results along with those of Johannson and colleagues [39] indicate that the increased visual Strehl ratio achieved by the aspheric IOL with zero SA is not at the expense of depth of field or diminished sensitivity to defocus.…”

Section: Discussionmentioning

confidence: 39%

Comparison of contrast sensitivity, depth of field and ocular wavefront aberrations in eyes with an IOL with zero versus positive spherical aberration

Pepose

Qazi

Edwards³

et al. 2009

Graefes Arch Clin Exp Ophthalmol

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Section: Discussionmentioning

confidence: 39%

Comparison of contrast sensitivity, depth of field and ocular wavefront aberrations in eyes with an IOL with zero versus positive spherical aberration

Pepose

Qazi

Edwards³

et al. 2009

Graefes Arch Clin Exp Ophthalmol

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“…One reason for this finding could be the greater amounts of higher-order aberrations (HOAs) that are normally associated with IOLs with high powers. Padmanabhan et al 38 showed that the optical design of monofocal IOLs was most likely responsible for an increase in spherical aberration, the magnitude of which was a function of the dioptric power of the IOL. Regarding near vision, the greater the IOL power, the worse the pseudoaccommodation, which may have also been caused by the greater HOAs.…”

Section: Discussionmentioning

confidence: 98%

Double-pass system analysis of the visual outcomes and optical performance of an apodized diffractive multifocal intraocular lens

Moreno

Piñero

Alió

et al. 2010

Journal of Cataract and Refractive Surgery

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PURPOSE: To evaluate the postoperative ocular optical quality using a double-pass method and assess visual outcomes in eyes with an apodized multifocal intraocular lens (IOL) and to correlate the findings with IOL power.SETTING: Vissum Corporation, Alicante, Spain. DESIGN: Case series. METHODS:This study evaluated eyes that had cataract surgery with implantation of an AcrySof ReSTOR SN6AD3 multifocal IOL. Near and far visual acuities were measured postoperatively at 1 month and 6 months. Ocular optical quality was assessed at 1 month using a double-pass system (Optical Quality Analysis System), and the point-spread function (PSF) and modulation transfer function (MTF) were characterized. RESULTS:The study included 38 eyes of 19 patients with a mean age of 63.4 years G 8.4 (SD). The improvements in uncorrected distance visual acuity (from 0.57 G 0.31 logMAR preoperatively to 0.11 G 0.13 logMAR 1 month postoperatively and 0.11 G 0.12 logMAR at 6 months) were statistically significant (P<.00001), as were the improvements in uncorrected near visual acuity (0.76 G 0.40 logMAR preoperatively to 0.21 G 0.11 logMAR and 0.12 G 0.09 logMAR, respectively) (P<.00001). The IOL power correlated significantly with PSF width (r Z 0.57, P Z .017) and the MTF cutoff frequency (r Z À0.36, P Z .05). Furthermore, the lower the IOL power, the better the near and distance visual acuities, especially 1 month postoperatively. CONCLUSION:The apodized multifocal IOL restored distance and near visual function, although IOL power was a limiting factor to the final visual outcomes and optical quality. Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned. J Cataract Refract Surg 2010; 36:2048-2055 Q 2010 ASCRS and ESCRSMultifocal intraocular lenses (IOLs) were designed to provide complete visual rehabilitation in pseudophakic patients by incorporating 2 foci for near and far. Because the 2 images work simultaneously in the retina (near focus and far focus), near vision improvement is always at the expense of far vision. Multifocal IOLs can reduce retinal image quality, significantly decreasing the patient's visual performance. Negative effects of multifocal IOLs, such as decreased contrast sensitivity, glare disability, and halos, have been reported. 1-3 Thus, some patients, such as those who are professional drivers, are not considered good candidates for multifocal IOL implantation.Some multifocal IOLs are hybrid models that combine apodized diffractive and refractive technologies to provide quality near and distance vision. The advantages of apodized diffractive versus refractive multifocal IOLs have been reported. 4 Hybrid multifocal IOLs with an aspheric optic were designed to reduce the unwanted visual phenomena associated with spherical multifocal IOL performance and to increase the range of focus, thus improving retinal image quality. 5 Studies 6-9 report that IOLs with an aspheric optic provide better contrast sensitivity than IOLs with a spherical optic.Although the objective opt...

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“…One such method is to measure HOAs. 7,8 In this study, we analyzed HOAs in entire eyes and in the internal optics (lenses) in patients with various grades of nuclear cataracts. myopia) and patients with a history of intraocular surgery or laser treatment were excluded.…”

Section: J Cataract Refract Surg 2008; 34:2104-2109 Q 2008 Ascrs and mentioning

confidence: 99%

Higher-order aberrations induced by nuclear cataract

Lee

Kim

Tchah

2008

Journal of Cataract and Refractive Surgery

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Wavefront Aberrations in Eyes With Acrysof Monofocal Intraocular Lenses

Abstract: PURPOSE: To characterize and measure the ocular aberrations in eyes implanted with monofocal intraocular lenses (IOLs) and to study any correlation between postoperative aberrations and surgical factors.

Cited by 24 publications

References 23 publications

Comparison of contrast sensitivity, depth of field and ocular wavefront aberrations in eyes with an IOL with zero versus positive spherical aberration

Comparison of contrast sensitivity, depth of field and ocular wavefront aberrations in eyes with an IOL with zero versus positive spherical aberration

Double-pass system analysis of the visual outcomes and optical performance of an apodized diffractive multifocal intraocular lens

Higher-order aberrations induced by nuclear cataract

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