Correlating Optical Bench Performance With Clinical Defocus Curves in Varifocal and Trifocal Intraocular Lenses

Plaza-Puche, Ana B.; Alió, Jorge L.; MacRae, Scott; Zheleznyak, Len; Sala, Esperanza; Yoon, Geunyoung

doi:10.3928/1081597x-20150423-03

Cited by 41 publications

(36 citation statements)

References 35 publications

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“…Optical bench studies have suggested that the PX IOL might exhibit slightly better overall performance when compared with the FV lens 4,12. A correlation between optical bench image quality and VA has been demonstrated in prior research 13. On balance, results from optical bench studies should be interpreted with caution and carry less weight than prospective comparative clinical studies.…”

Section: Discussionmentioning

confidence: 99%

Trifocal intraocular lenses: a comparison of the visual performance and quality of vision provided by two different lens designs

Gundersen

Potvin²

2017

OPTH

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PurposeTo compare two different diffractive trifocal intraocular lens (IOL) designs, evaluating longer-term refractive outcomes, visual acuity (VA) at various distances, low contrast VA and quality of vision.Patients and methodsPatients with binocularly implanted trifocal IOLs of two different designs (FineVision [FV] and Panoptix [PX]) were evaluated 6 months to 2 years after surgery. Best distance-corrected and uncorrected VA were tested at distance (4 m), intermediate (80 and 60 cm) and near (40 cm). A binocular defocus curve was collected with the subject’s best distance correction in place. The preferred reading distance was determined along with the VA at that distance. Low contrast VA at distance was also measured. Quality of vision was measured with the National Eye Institute Visual Function Questionnaire near subset and the Quality of Vision questionnaire.ResultsThirty subjects in each group were successfully recruited. The binocular defocus curves differed only at vergences of −1.0 D (FV better, P=0.02), −1.5 and −2.00 D (PX better, P<0.01 for both). Best distance-corrected and uncorrected binocular vision were significantly better for the PX lens at 60 cm (P<0.01) with no significant differences at other distances. The preferred reading distance was between 42 and 43 cm for both lenses, with the VA at the preferred reading distance slightly better with the PX lens (P=0.04). There were no statistically significant differences by lens for low contrast VA (P=0.1) or for quality of vision measures (P>0.3).ConclusionBoth trifocal lenses provided excellent distance, intermediate and near vision, but several measures indicated that the PX lens provided better intermediate vision at 60 cm. This may be important to users of tablets and other handheld devices. Quality of vision appeared similar between the two lens designs.

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Section: Discussionmentioning

confidence: 99%

Trifocal intraocular lenses: a comparison of the visual performance and quality of vision provided by two different lens designs

Gundersen

Potvin²

2017

OPTH

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“…The optical quality of an intraocular lens (IOL) is a key parameter contributing to a patient's visual performance after cataract or refractive surgery, and has drawn the attention of increasing number of researchers in the last years (e.g., [1][2][3][4]). This investigation can help: 1) designers of intraocular lenses, to better estimate the relative effects of modifying an implant design on an average patient's vision, 2) manufacturers, to determine a more accurate control and provide more useful specifications of their ophthalmic products, and 3) surgeons, to better evaluate the implications of specific optical parameters in the IOL selection.…”

Section: Introductionmentioning

confidence: 99%

Visual acuity of pseudophakic patients predicted from in-vitro measurements of intraocular lenses with different design

Vega

Millán

Garzón

et al. 2018

Biomed. Opt. Express

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The optical quality of a set of IOLs (modeling set: one monofocal and two bifocals) was assessed through focus by the area under the modulation transfer function (MTFa) metric and related to the visual acuity (VA) defocus curves of pseudophakic patients implanted with said IOLs. A non-linear relationship between the MTFa and clinical VA was obtained with an asymptotic limit found to be the best VA achievable by the patients. Two mathematical fitting functions between clinical VA and MTFa were derived with high correlation coefficients (R 2 ≥0.85). They were applied to the MTFa obtained from a different set of IOLs with advanced designs (trial set: one extended range of vision-ERV-, one trifocal ERV and one trifocal apodized) to predict VA versus defocus of patients implanted with these IOLs. Differences between the calculated VA and the clinical VA for both fitting models were within the standard deviation of the clinical measurements in the range of-3.00 D to 0.00 D defocus, thus proving the suitability of the MTFa metric to predict clinical VA performance of new IOL designs.

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“…A c c e p t e d M a n u s c r i p t 3 corneal spherical aberration, 4,5 regular corneal astigmatism, 6,7 corneal irregular astigmatism, 8,9 and effective lens addition. [10][11][12] The literature is full of studies reporting results with several MIOLs according to the standards, [13][14][15][16][17][18][19][20][21][22][23][24] but it is still not clear the influence of biometric factors on the performance of each particular IOL according to the characteristics of the patient. The main aim of this study was to evaluate the performance of a high addition MIOL by means of computing the area under the visual acuity defocus curve 25 and correlate it with several biometric parameters.…”

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confidence: 99%

Biometric Factors Associated with the Visual Performance of a High Addition Multifocal Intraocular Lens

Fernández¹,

Rodríguez‐Vallejo²,

Martínez³

et al. 2018

Current Eye Research

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Correlating Optical Bench Performance With Clinical Defocus Curves in Varifocal and Trifocal Intraocular Lenses

Abstract: Significant correlations were found between logMAR visual acuity and image quality metric for the multifocal and monofocal IOLs analyzed. This finding enables surgeons to predict visual outcomes from the optical bench analysis.

Cited by 41 publications

References 35 publications

Trifocal intraocular lenses: a comparison of the visual performance and quality of vision provided by two different lens designs

Trifocal intraocular lenses: a comparison of the visual performance and quality of vision provided by two different lens designs

Visual acuity of pseudophakic patients predicted from in-vitro measurements of intraocular lenses with different design

Biometric Factors Associated with the Visual Performance of a High Addition Multifocal Intraocular Lens

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