Distance and near contrast sensitivity function after multifocal intraocular lens implantation

Montés‐Micó, Robert; Alió, Jorge L.

doi:10.1016/s0886-3350(02)01648-6

Cited by 223 publications

(157 citation statements)

References 26 publications

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“…Previous literature about CS with a multifocal IOL found a reduction compared to that obtained with a monofocal IOL (2) . Our results were similar possibly because in these patients there was already a high degree of contrast-reducing scatter previous surgery (natural eye), giving a reduced CSF as compared with normal young eyes.…”

Section: Discussionmentioning

confidence: 64%

“…Bifocal refractive (1)(2)(3) , diffractive (4)(5)(6)(7) , spherical hybrid (8)(9)(10)(11) and aspheric hybrid (12)(13)(14)(15)(16) IOLs generate two focal points along the optical axis to provide good monocular uncorrected distance and near visual acuity (UCVA and UNVA, respectively) as well as functional intermediate vision. The bifocal IOLs have also been implanted in RLE with good results at distance and near vision (17)(18)(19)(20)(21)(22)(23)(24)(25) .…”

Section: Introductionmentioning

confidence: 99%

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Contrast sensitivity after refractive lens exchange with a multifocal diffractive aspheric intraocular lens

Ferrer-Blasco

García‐Lázaro

Albarrán-Diego

et al. 2013

Arq. Bras. Oftalmol.

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Purpose: To evaluate distance and near contrast sensitivity (CS) under photopic and mesopic conditions before and after refractive lens exchange (RLE) and implantation of the aspheric AcrySof ® ReSTOR ® (SN6AD3 model) intraocular lens (IOL). Methods: Seventy-four eyes of 37 patients after RLE underwent bilateral implantation with the aspheric AcrySof ReSTOR IOL. The patient sample was divided into myopic and hyperopic groups. Monocular uncorrected visual acuity at distance and near (UCVA and UCNVA, respectively) and monocular best corrected visual acuity at distance and near (BCVA and BCNVA, respectively) were measured before and 6 months postoperatively. Monocular CS function was measured at three different luminance levels (85, 5 and 2.5 cd/m 2 ) before and after RLE. Post-implantation results at 6 months were compared with those found before surgery. Results: Our results revealed that patients in both groups obtained good UCVA and BCVA after RLE at distance and near vision in relation to pre-surgery values. No statistically significant differences were found between the values of CS pre and post-RLE at distance and near, at any lighting condition and spatial frequency (p>0.002). Conclusions: Refractive lens exchange with aspheric AcrySof ReSTOR IOL in myo pic and hyperopic population provided good visual function and yield good distance and near CS under photopic and mesopic conditions.

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Section: Discussionmentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Contrast sensitivity after refractive lens exchange with a multifocal diffractive aspheric intraocular lens

Ferrer-Blasco

García‐Lázaro

Albarrán-Diego

et al. 2013

Arq. Bras. Oftalmol.

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“…In a recent study by Alio et al, although there was a significant difference in CS between groups of patients with monofocal and multifocal IOLs up to 3 months postoperatively, the difference was no longer significant after 6 months and CS improved in both groups. 15 The questionnaire revealed that the multifocal IOL patients were less likely to wear glasses (81.3%) than the monofocal patients (100%), which could reflect less dependency of the former group on glasses. It also showed the presence of blur and glare/halo symptoms more commonly in these patients (12.5% and 18.8%) and their absence in the monofocal group, which concur with findings of previous studies.…”

Section: Discussionmentioning

confidence: 90%

Effect of illumination on visual function after monofocal and multifocal intraocular lens implantation

Elgohary

Beckingsale

2005

Eye

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Purpose To compare best-corrected visual acuity (BCVA) and contrast sensitivity (CS) under different levels of illumination in patients who had monofocal and multifocal intraocular lenses (IOLs) and to establish the effect of different lighting conditions on vision in the two groups of patients. Methods We retrospectively reviewed 27 patients who underwent phacoemulsification for age-related cataract and IOL implantation of either monofocal (SI30NB; n ¼ 10, 37%) or multifocal (SA40N; n ¼ 17, 63%) IOLs. Binocular distance and near BCVA and CS were tested using logMAR and Pelli-Robson charts that were externally illuminated with 20, 200, 400 and 1600 lux, and were compared using repeated-measures analysis of variance. A questionnaire was administered to establish the lighting preference in the two groups and the effect of lighting conditions on their vision. Results Binocular distance and near BCVA and CS significantly increased with increasing illumination from 20 to 200 lux in the monofocal (mean ¼ 0.04 vs -0.07, P ¼ 0.006; 0.37 vs 0.26, P ¼ 0.002 and 1.47 vs 1.60, P ¼ 0.01) as well as in the multifocal group (mean ¼ 0.03 vs À0.12, Po0.001; 0.38 vs 0.23, Po0.001 and 1.47 vs 1.61, P ¼ 0.002). No significant difference in BCVA or CS was found between the two groups at any of the four illumination levels. Both groups had similar lighting preference, but 43.8% of patients in the multifocal group experienced subjective worsening of their vision in bright outdoor lights. Conclusions Distance and near BCVA and CS improve with increasing illumination in patients with monofocal and multifocal IOLs, but remain comparable in the two groups under common levels of indoor illumination. Patients with multifocal IOLs may experience worsening of their vision in bright outdoor lights.

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“…52 To accelerate this learning process, Kaymak and associates 53 investigated the efficacy of a special visual training program on the post-operative visual performance. The training method was based on orientation discrimination of tilted bars, which were presented on a monitor.…”

Section: Contrast Sensitivitymentioning

confidence: 99%

“…In both situations, the unwanted effect of the light in the out-offocus image is to reduce the contrast of the in-focus image. 13,52 Clear bifoveal images are needed for high-resolution stereopsis, and retinal image contrast reduction provided by multifocal IOLs may affect stereopsis.…”

Section: Hybrid Multifocal Iols Madrid-costa Cerviño Ferrer-blascomentioning

confidence: 99%

Visual and optical performance with hybrid multifocal intraocular lenses

Madrid-Costa

Cerviño

Ferrer-Blasco

et al. 2010

Clinical and Experimental Optometry

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During the past years, the wish to become independent of spectacles has been growing among cataract and presbyopic patients due to many factors, such as the increase in near visual demands, the aesthetic need for a spectacle-free image and ageing of refractive surgery patients, among others. This review assesses recently published studies that analyse visual and optical performance through different metrics of eyes implanted with multifocal intraocular lenses (IOLs), particularly hybrid IOL designs. The published evidence suggests that hybrid multifocal IOLs provide very good outcomes in a number of visual and optical performance parameters. Patients implanted with this type of IOL obtain a satisfactory full range of visual functions, including patients of particular characteristics such as highly ametropic or post-LASIK.

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Distance and near contrast sensitivity function after multifocal intraocular lens implantation

Cited by 223 publications

References 26 publications

Contrast sensitivity after refractive lens exchange with a multifocal diffractive aspheric intraocular lens

Contrast sensitivity after refractive lens exchange with a multifocal diffractive aspheric intraocular lens

Effect of illumination on visual function after monofocal and multifocal intraocular lens implantation

Visual and optical performance with hybrid multifocal intraocular lenses

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