Chord mu and chord alpha as postoperative predictors in multifocal intraocular lens implantation

Montrimas, Andrius; Žemaitienė, Reda; Yao, Ke; Grzybowski, Andrzej

doi:10.1007/s00417-023-06098-x

Cited by 6 publications

(1 citation statement)

References 54 publications

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“…Visual acuity showed no significant difference between groups. A recent review [9] suggests that the critical values for both chord mu and chord alpha are 0.5-0.6 mm, above which is associated with worse patient-reported outcomes. Below these critical values, there is no relationship between the measurements and incidence of glare/halos [10].…”

Section: Indicationsmentioning

confidence: 99%

Outcomes and predictive factors in multifocal and extended depth of focus intraocular lens implantation

De la Paz,

Tsai

2023

Current Opinion in Ophthalmology

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Purpose of review Options for addressing presbyopia with intraocular lens (IOL) implantation have become more varied and sophisticated. We reviewed recent literature on multifocal and extended depth of focus (EDOF) IOLs in order to provide insight on their respective advantages, with emphasis on the visual outcomes of each design. Recent findings Increased patient age, spectral domain optical coherence tomography (SD-OCT) abnormalities, abnormal optical axis measurements, and better preoperative visual acuity have been implicated as predictors of worse postoperative vision or visual quality in multifocal IOLs. Despite differences in objective outcomes, patient-reported outcomes such as satisfaction are consistently similar between multifocal and EDOF IOLs. EDOFs may have slightly lower rates of spectacle independence than trifocals, but there is more support for their use in the setting of with other ocular conditions. Summary Multifocal and EDOF IOLs are both viable options for patients who wish to preserve near vision. Given their similar objective performance in many aspects, enabling patients to make informed decisions based on their expectations and visual requirements is critical to postoperative satisfaction. Evidence for advanced technology IOL implantation in pediatric patients remains inconclusive.

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Section: Indicationsmentioning

confidence: 99%

Outcomes and predictive factors in multifocal and extended depth of focus intraocular lens implantation

De la Paz,

Tsai

2023

Current Opinion in Ophthalmology

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Tolerance to decentration of biaspheric intraocular lenses with refractive phase-ring extended depth of focus and diffractive trifocal designs

Cerviño,

Esteve-Taboada,

Chiu

et al. 2024

Graefes Arch Clin Exp Ophthalmol

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Purpose This study aimed to investigate the in vitro tolerance to decentration of biaspheric intraocular lens (IOLs) with refractive phase-ring extended depth-of-focus (EDOF) and diffractive trifocal designs. Methods This experimental study was carried out at the Department of Optics and Optometry and Vision Science, University of Valencia, Spain. The modulation transfer function (MTF) of the ETLIO130C EDOF and the TFLIO130C trifocal IOLs (AST Products Inc., Billerica, MA, USA) were determined at different levels of decentration for a given wavelength and pupil diameter using the PMTF optical bench (Lambda-X Ophthalmics, Nivelles, Belgium). The modulation transfer function (MTF) curves, the through-focus MTF curves, and the Strehl ratios were measured at 3-mm pupil aperture for 0.25-, 0.50- and 0.75-mm decentration. Results The optical design of the trifocal TFLIO130C IOL is robust to small decentrations, with virtually no change in MTF response for 0.25 mm decentration. For greater decentration levels, the MTF response is slightly reduced with increasing decentration. The ETLIO130C EDOF design is robust to decentration, as the MTF response is only minimally affected when increasing the decentration up to 0.75 mm. Conclusions MTF responses are slightly reduced with greater levels of decentration, but the range of focus provided by both trifocal and EDOF designs are preserved. The effects for average levels of decentration reported in the literature are minimum for both IOL designs.

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Comment on: “Chord mu and chord alpha as postoperative predictors in multifocal intraocular lens implantation”

Wallerstein,

Ridgway,

Gauvin

2024

Graefes Arch Clin Exp Ophthalmol

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Chord mu and chord alpha as postoperative predictors in multifocal intraocular lens implantation

Cited by 6 publications

References 54 publications

Outcomes and predictive factors in multifocal and extended depth of focus intraocular lens implantation

Outcomes and predictive factors in multifocal and extended depth of focus intraocular lens implantation

Tolerance to decentration of biaspheric intraocular lenses with refractive phase-ring extended depth of focus and diffractive trifocal designs

Comment on: “Chord mu and chord alpha as postoperative predictors in multifocal intraocular lens implantation”

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