The Influence of Angle Alpha, Angle Kappa, and Optical Aberrations on Visual Outcomes after the Implantation of a High-Addition Trifocal IOL

Cervantes-Coste, Guadalupe; Tapia, André; Corredor-Ortega, Claudia; Osorio, Mariana; Valdez, Rafael; Massaro, Martha; Velasco‐Barona, Cecilio; González-Salinas, Roberto

doi:10.3390/jcm11030896

Cited by 26 publications

(30 citation statements)

References 49 publications

(109 reference statements)

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“…and another recent study reported that 42% of eyes had corneal astigmatism of at least 1.00 dioptres (D) [3]. This amount of astigmatism is already large enough to compromise both postoperative visual acuity and visual quality if it is left uncorrected [2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

“…Several multifocal intraocular lenses (IOLs) have been introduced to the market during the last decade. However, the best possible visual outcome can only be accomplished if all refractive errors, including astigmatism, are properly corrected [ 2 , 3 , 4 ]. Ferrer-Blasco et al reported that the majority (87%) of cataract patients had preoperative astigmatism [ 5 ], and another recent study reported that 42% of eyes had corneal astigmatism of at least 1.00 dioptres (D) [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

“…Ferrer-Blasco et al reported that the majority (87%) of cataract patients had preoperative astigmatism [ 5 ], and another recent study reported that 42% of eyes had corneal astigmatism of at least 1.00 dioptres (D) [ 3 ]. This amount of astigmatism is already large enough to compromise both postoperative visual acuity and visual quality if it is left uncorrected [ 2 , 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Simultaneous Presbyopia and Astigmatism Correction with a Novel Trifocal Toric Intraocular Lens—A One-Year Follow-Up

Nováček

Němcová

Sičová

et al. 2022

JCM

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The current investigation evaluates the efficiency of the trifocal toric Liberty 677MTY intraocular lens (IOL) in correcting preoperative corneal astigmatism in cataract patients demanding spectacle independence. The retrospective evaluation included 28 eyes of 15 patients with preoperative corneal astigmatism of at least 1.0 Dioptre (D). All patients were followed up for one year postoperatively. Residual refractive errors and visual acuities at multiple distances were measured. Binocular visual acuity and contrast sensitivity defocus curves were plotted. Visual functions and patient satisfaction were assessed. The efficiency of astigmatism correction was determined using the vector analysis method. The mean spherical equivalent refraction (SEQ) improved from 2.72 ± 1.62 D to 0.10 ± 0.48 D. The cylindric refraction decreased from 1.18 ± 0.45 D to 0.16 ± 0.31 D. Vector analysis proved efficient astigmatism correction with a centroid of 0.10 ± 0.34 D at 161°. Ninety-two percent of eyes resulted within 0.5 D from the target refraction. Visual acuities were 0.1 logMAR or better from +1.0 to −3.5 D defocus values. Visual tasks could be performed without major difficulties. Our patients were highly satisfied. Refractive and visual outcomes with the investigated presbyopia-correcting toric IOL are predictable and the lens provides excellent trifocal vision.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simultaneous Presbyopia and Astigmatism Correction with a Novel Trifocal Toric Intraocular Lens—A One-Year Follow-Up

Nováček

Němcová

Sičová

et al. 2022

JCM

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“…This is consistent with Cervantes-CosteGuadalupe et al [8] who proposed that there is a signi cant difference between postoperative Kappa angle and distant vision, which also reminds us that Kappa angle can be used as one of the factors to predict postoperative distant vision. However, some scholars believe that the distant visual acuity of Kappa angle in trifocal IOL implantation is not affected by central eccentricity, while the lower additional trifocal IOL with slight eccentricity can obtain better near vision, but it will affect the contrast sensitivity [9] .The results of this study suggest that the difference is not statistically signi cant 1 month after operation, which may be related to the recovery of pupil size and the gradual recovery of kappa angle 1 month after operation.…”

Section: Discussionmentioning

confidence: 55%

Correlation study of changes in visual acuity, pupil diameter, Kappa angle, and Alpha angle after phacoemulsification surgery combined with multifocal IOL implantation

Zhenlin

Pengfen²,

Zheng

2022

Preprint

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Purpose To study the changes and correlation of visual acuity, pupil size, kappa angle and Alpha angle after phacoemulsification combined with multifocal intraocular lens implantation by analyzing the data provided by OPD-ScanIII Optical Path Difference optical path difference analyzer. Methods From March 2020 to October 2021, 35 patients (60 eyes) with cataract who underwent phacoemulsification combined with multifocal intraocular lens implantation were analyzed retrospectively. The changes of pupil size, Alpha angle, Kappa angle and postoperative visual acuity were measured by OPD-ScanIII optical path difference analyzer before and 1 week after operation. The correlation between pupil size, Kappa angle, Alpha angle and distal and near visual acuity was analyzed 1 week and 1 month after operation. Sixteen eyes of cataract patients were followed up for more than one month to study the changes of pupil size, Alpha angle and Kappa angle one week and one month after operation. Results phacoemulsification combined with multifocal intraocular lens implantation significantly improved the visual acuity of the patients, and the pupil size and Kappa angle decreased 1 week after operation, but there was no significant difference between the indexes more than one month after operation and those before operation. There was no significant difference in Kappa angle and Alpha angle before and 1 week after operation, but there was significant correlation between distant visual acuity and Kappa angle in light and dark vision 1 week after operation. There was no correlation between distant visual acuity and Alpha angle and pupil size 1 week after operation. One week after operation, there was no correlation between near and middle visual acuity and Alpha angle, Kappa angle and pupil size 1 week after operation, and there was no significant difference between Alpha angle and Kappa angle and pupil size 1 week after operation. There was no significant difference between Alpha angle and Kappa angle 1 month after operation. Conclusion phacoemulsification combined with bifocal intraocular lens implantation can significantly improve the visual acuity of patients, reduce the size of light and dark pupil and Kappa angle under dark vision in a short time, and recover after long-term surgery. Therefore, phacoemulsification combined with bifocal intraocular lens surgery should not expand the optical related indexes of patients before operation, which may lead to postoperative adverse reactions and decrease satisfaction.

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“…This article showed that among patients with a bifocal IOLs, those with 1.50 D and 2.00 D astigmatism had worse postoperative visual acuity at all distances than those with astigmatisms of 0.00 D and 0.50 D suggesting the need to reduce corneal astigmatism below 1.00 D when implanting a multifocal IOL. Large preoperative corneal astigmatism often limits the application of multifocal IOLs, which results in poor visual acuity at all distances postoperatively 52 . Broadening the types of multifocal IOLs, multifocal IOLs with toric designs have been available since 2007 53 .…”

Section: Discussionmentioning

confidence: 99%

Bibliometric and visual analysis of global research on premium IOLs from 2000 to 2022

Liu

et al. 2023

Preprint

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Background Premium intraocular lenses (PIOLs), particularly those using multifocal, extended depth of focus (EDoF) and toric technologies, have been in clinical use for decades, giving countless cataract patients the ability to see the world clearly again. To explore the development process, research status and future development trends of PIOLs, we explored research on PIOLs from the past 22 years through bibliometrics. Methods The literature search was performed on the Web of Science and included PIOL studies published between 2000 and November 2022. The retrieved literature was collated and analyzed by R-tool's Bibliometrix package, CitNetExplorer, CiteSpace and other software. Results We obtained a total of 1801 articles about PIOLs, most of which were published in Spain and the United States. The organization that published the most articles was the University of Valencia in Spain. Alió JL, and Montés-Micó R, from Spain were the most influential authors in this field. The Journal of Cataract and Refractive Surgery and Journal of Refractive Surgery were the core journals for this field; the top 10 cited articles mainly focus on postoperative satisfaction with multifocal IOLs and postoperative results of toric IOLs. Through a key word analysis, we found that trifocal IOLs, astigmatism and EDoF IOLs are the most discussed topics at present, and the importance of astigmatism and the clinical application of the new generation of PIOL are the emerging research trends. In addition, we found that researchers are not only focusing on the application of cutting-edge technology but also paying increasing attention to patients' subjective satisfaction. Conclusion Bibliometric analysis can effectively help to identify multilevel concerns in premium intraocular lens (PIOL) research and we found that in the past 2 decades, the research of PIOL has made rapid development and gradually matured, countless cataract patients can regain excellent visual quality and improve their quality of life after surgery. The current research hotspots regarding PIOL are the application of EDoF IOL as well as trifocal IOL and its toric models and the development of new types of PIOLs.

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The Influence of Angle Alpha, Angle Kappa, and Optical Aberrations on Visual Outcomes after the Implantation of a High-Addition Trifocal IOL

Cited by 26 publications

References 49 publications

Simultaneous Presbyopia and Astigmatism Correction with a Novel Trifocal Toric Intraocular Lens—A One-Year Follow-Up

Simultaneous Presbyopia and Astigmatism Correction with a Novel Trifocal Toric Intraocular Lens—A One-Year Follow-Up

Correlation study of changes in visual acuity, pupil diameter, Kappa angle, and Alpha angle after phacoemulsification surgery combined with multifocal IOL implantation

Bibliometric and visual analysis of global research on premium IOLs from 2000 to 2022

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