Effect of position of near addition in an asymmetric refractive multifocal intraocular lens on quality of vision

Wit, Deric W. de; Diaz, Jose M.; Moore, Tara; Moutari, Salissou; Moore, Jonathan E.

doi:10.1016/j.jcrs.2014.07.045

Cited by 22 publications

(12 citation statements)

References 24 publications

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“…Characteristically this can be interpreted in the OPD as coma rather than simply an increase in spherical power in the near add. 21 This current study only found a significant increase in trefoil aberrations when comparing preoperative to postoperative which again may be inaccurate and due to the aforementioned problems. We therefore assessed the isolated effect of corneal astigmatism upon objective outcomes and patient satisfaction.…”

Section: Discussioncontrasting

confidence: 53%

Threshold limit of postoperative astigmatism for patient satisfaction after refractive lens exchange and multifocal intraocular lens implantation

McNeely

Pazo

Millar

et al. 2016

Journal of Cataract and Refractive Surgery

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Section: Discussioncontrasting

confidence: 53%

Threshold limit of postoperative astigmatism for patient satisfaction after refractive lens exchange and multifocal intraocular lens implantation

McNeely

Pazo

Millar

et al. 2016

Journal of Cataract and Refractive Surgery

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“…The + 1.5 D addition at the IOL plane is calculated to be + 1.06 D addition at the corneal plane. The optic is 6.0 mm in diameter and the overall length of the plate-haptic is 11.0 mm [ 7 – 9 ]. There was three toric models; T1 has 1.5 D toricity at the IOL plane and 1.04 D toricity at the corneal plane, T2 has 2.25 D and 1.56 D, and T3 has 3.0D and 2.08 D. The toric axis is fixed on the horizontal meridian of the IOL.…”

Section: Methodsmentioning

confidence: 99%

Prospective assessment of plate-haptic rotationally asymmetric multifocal toric intraocular lens with near addition of + 1.5 diopters

et al. 2020

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Background To prospectively evaluate surgical results following implantation of rotationally asymmetric, plate-haptic, refractive segmented multifocal toric intraocular lenses (IOLs) with near addition of + 1.5 diopters (D) (Lentis Comfort LS-313 MF15T, Oculentis GmbH). Methods In 59 eyes of 41 patients, ocular examinations were conducted before and 1 day, 1 week, 1, 3, and 6 months after surgery. Uncorrected (UDVA) and corrected (CDVA) distance visual acuity, uncorrected (UIVA) and distance-corrected (DCIVA) intermediate visual acuity at 70 cm, and uncorrected (UNVA) and distance-corrected (DCNVA) near visual acuity at 30 cm were tested. A defocus curve was drawn, and the degree of disturbing photic phenomena were questioned. Results The IOL showed excellent rotational stability; the average absolute rotation was 1.66 ± 1.17 degrees from 1 day 1 to 6 months postoperatively, and 98.1 and 100% of eyes yielded rotation of less than 5 and 10 degrees, respectively. Postoperative distance and intermediate visual acuity were highly satisfactory; UDVA, CDVA, UIVA, and DCIVA were about 20/20, 20/16, 20/25, 20/25, respectively. Near visual acuity was suboptimal; UNVA and DCNVA were at approximately 20/60. The defocus curve analysis showed that 20/25 and 20/40 uncorrected visual acuity was attained at as close as 60 and 40 cm, respectively. Contrast sensitivity was within a normal range, and subjective photic phenomena were minimum. Conclusions The refractive segmented, rotationally asymmetric multifocal toric IOLs with + 1.5 D near addition showed superb rotational stability and highly satisfactory distance and intermediate vision. Contrast sensitivity was high and incidence of photic symptoms was very low. Trial registration This study was registered at JAPIC Clinical Trials Information, ID: JapicCTI-183,877, https://www.clinicaltrials.jp/cti-user/trial/Search.jsp (February 5, 2018).

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“…Так, в исследовании D. de Wit с соавт. [14] линза Lentis Mplus LS-312 устанавливалась с положением добавочного сегмента в нижненосовом квадранте (80 глаз, 40 пациентов) либо в верхневисочном квадранте (76 глаз, 38 пациентов). Во всех глазах была использована добавка +3.0 дптр., при этом не найдено различий в передаточной функции модуляции.…”

Section: A б влияние положения добавочного сегмента на остроту зренияunclassified

Modern Aspects of Multifocal Intraocular Correction: A Review

et al. 2017

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During the last decade multifocal intraocular lenses (IOL) became widely used in cataract surgery and proved to be effective in recovery of visual functions. Lots of clinical studies with different multifocal IOL models showed high effectiveness of multifocal correction to achieve good visual quality for far, intermediate, and near distances. Uncorrected visual acuity at a distance is equal to multifocal and monofocal correction, while uncorrected near vision is significantly better with multifocal IOLs. Additional segment position in asymmetric multifocal IOL models did not significantly influence on visual acuity. Multiple multifocal IOL designs (bifocal, trifocal) and ADD power level provide different functional results for near and intermediate distances which allows to select the specific IOL model depending on the patient`s needs. The review covers the following aspects of multifocal intraocular correction: update for classification of multifocal IOLs, visual acuity (functional results) at different distances after multifocal IOL implantation, comparison of clinical results with different multifocal IOL designs and add power levels, influence of add segment position in asymmetric multifocal IOLs on visual quality, comparison between multifocal and monofocal correction.

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Effect of position of near addition in an asymmetric refractive multifocal intraocular lens on quality of vision

Abstract: Positioning of the near add did not significantly affect objective or subjective visual function parameters.

Cited by 22 publications

References 24 publications

Threshold limit of postoperative astigmatism for patient satisfaction after refractive lens exchange and multifocal intraocular lens implantation

Threshold limit of postoperative astigmatism for patient satisfaction after refractive lens exchange and multifocal intraocular lens implantation

Prospective assessment of plate-haptic rotationally asymmetric multifocal toric intraocular lens with near addition of + 1.5 diopters

Modern Aspects of Multifocal Intraocular Correction: A Review

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