Correction of astigmatism with toric intraocular lenses

Mallias, Ioannis; Mylova, Panagiota; Tassiopoulou, Anastasia

doi:10.5603/oj.2017.0012

Cited by 3 publications

(4 citation statements)

References 15 publications

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“…U haptik typu plate dochází během dvou týdnů k celkovému a symetrickému spojení vaku, což vede k nižší rotaci v pozdějším pooperačním období. U čoček designu loop haptik dochází k asymetrické fúzi ve směru hodinových ručiček, pozdní rotace čočky je běžnější [21]. K pooperační rotaci TIOL více než 10° dochází nejčastěji do 10 dnů od operace katarakty [4].…”

Section: Diskuzeunclassified

Evaluation of Clinical Results of Implantation of Toric Intraocular Lenses Including their Rotational Stability

Pašková,

Marešová,

Schreiberová

et al. 2024

CSO

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Purpose: The aim of the study was to evaluate the clinical results of the implantation of the toric intraocular lens Acrysof IQ Toric SN6AT3_8 (Alcon Laboratories, Inc., Fort Worth, TX, USA), including an evaluation of its rotational stability. Material and methods: 30 eyes of 16 patients (4 males, 12 females; mean age 68 years) with regular corneal astigmatism ranging from -1.5 to -4.0 Dcyl were included in this retrospective study. All the patients underwent uncomplicated cataract surgery with the implantation of a toric intraocular lens (TIOL) at the Department of Ophthalmology of the Faculty of Medicine and Dentistry of Palacký University in Olomouc and University Hospital Olomouc during the course of 2020. Follow-up examinations were performed 3–6 months after cataract surgery. We monitored the resulting uncorrected distance visual acuity (UDVA), postoperative refraction, rotational stability of the implanted lens and subjective patient satisfaction. Results: mean preoperative corneal astigmatism was -2.41 ±0.67 Dcyl. UDVA improved from a mean value of 0.45 ±0.25 (expressed in decimal Snellen optotype values) to 0.91 ±0.16. The spherical equivalent value of 0.41 ±2.92 improved to -0.11 ±0.27 postoperatively. The mean deviation from the planned axis was 4.87 ±4.75. Subjective satisfaction was rated by patients on a scale of 1–5, with a mean score of 1.5. Conclusion: TIOL implantation is a safe and effective solution for patients with corneal astigmatism and cataract. Our results demonstrate improved UDVA, rotational stability of the TIOL and subjective patient satisfaction with the outcome of the surgery.

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Section: Diskuzeunclassified

Evaluation of Clinical Results of Implantation of Toric Intraocular Lenses Including their Rotational Stability

Pašková,

Marešová,

Schreiberová

et al. 2024

CSO

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“…Previous studies have shown that the toric lens undergoes the highest rotation between 1 hour and 10 days after surgery [4]. The principal factors leading to rotational instability of toric lenses have been identified as intraoperative hypotonia, the presence of residual viscoelastic material posterior and/or anterior to the IOL, and lens bag-related factors such as capsular bag contraction, phimosis, shrinkage, as well as capsular bag diameter and capsulorhexis size [3,4]. However, other factors such as axial length (AL) and IOL-related factors such as its design/ material, axis IOL alignment, and IOL's haptic diameter have also been proposed [9].…”

Section: Rotational Stabilitymentioning

confidence: 99%

“…Substantial rotation of the toric lens can be resolved by repositioning the previously implanted lens before complete fusion between the artificial lens and the lens bag. If repositioning is impossible, residual astigmatism can be corrected non-invasively with spectacles or surgically by implanting a second toric lens into the ciliary sulcus or performing refractive corneal surgery [3].…”

Section: Rotational Stabilitymentioning

confidence: 99%

“…It is typically defined by the altitude expressed in cylindrical diopters (D) and the axis presented in the range of 0-180° [1]. According to estimates, preoperative corneal astigmatism higher than 1 D is present in up to 30-47% of eyes with cataracts [1,2], while corneal astigmatism above 2 D and 3.5 D occurs in 8% and 1.7-2.7% of patients, respectively [3,4]. It is known that astigmatism above 1 D leads to a significant reduction in the quality of life resulting from difficulties in performing basic activities [1].…”

Section: Artykuł Przeglądowy Review Article Introductionmentioning

confidence: 99%

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Rotational stability of the enVista® toric lens compared to other commonly implanted toric intraocular lenses – a literature review

Liberski,

Dmitriew,

Kocięcki

2023

Ophthatherapy

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Preoperative corneal astigmatism higher than 1 D is present in up to 30–47% of eyes with cataracts. Proper correction of astigmatism, apart from the adequately determined spherical power of the artificial intraocular lens (IOL), is the main factor ensuring the desired result of the procedure manifested as postoperative spectacle’s independence, visual function, and as a result – patient satisfaction. Toric IOL implantation allows simultaneous cataract removal and correction of corneal astigmatism during one surgical procedure. Since the introduction of toric IOLs, more rotationally stable lenses allowing for better refractive performance have been introduced to clinical practice. EnVista® is an acrylic toric IOL (enVista® MX60T; Bausch and Lomb Inc., Rochester, NY, USA), which was introduced in 2018, and currently is one of the most used toric IOLs in clinical practice worldwide. Rotational stability, apart from adequately selected spherical and toric IOL equivalents, is the most crucial parameter determining the benefits of using a toric lens because it is estimated that for every 1° of rotation of the toric IOL from the target axis, the correction of astigmatism is reduced by 3.5%; therefore a significant change of position in the postoperative period may require another surgical intervention. In this review, based on published research, we summarized the rotational stability of the enVista® lens compared to the other toric IOLs available on the market.

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Femtosecond laser–assisted capsulotomy with capsular marks for toric IOL alignment: Comparison of tensile strength with standard femtosecond laser capsulotomy

Teuma

Gray

Bedi³

et al. 2019

Journal of Cataract and Refractive Surgery

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Correction of astigmatism with toric intraocular lenses

Cited by 3 publications

References 15 publications

Evaluation of Clinical Results of Implantation of Toric Intraocular Lenses Including their Rotational Stability

Evaluation of Clinical Results of Implantation of Toric Intraocular Lenses Including their Rotational Stability

Rotational stability of the enVista® toric lens compared to other commonly implanted toric intraocular lenses – a literature review

Femtosecond laser–assisted capsulotomy with capsular marks for toric IOL alignment: Comparison of tensile strength with standard femtosecond laser capsulotomy

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