ArticleBMC ophthalmology2020
Clinical evaluation of toric intraocular lens implantation based on iTrace wavefront keratometric astigmatism.
Article in BMC ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
6 citing papers in PubMed, 6 citations in OpenAlex.
- Reproducibility of the Magnitude of Lens Rotation Following Implantation of a Toric Intraocular Lens with Modified Haptics.Clinical ophthalmology (Auckland, N.Z.) · 2022Trial
- Risk factors for error in refractive astigmatism after toric intraocular lens implantation in Chinese patients.BMC ophthalmology · 2025Article
- Alpha and Kappa angle on postoperative visual quality in cataract surgery.International journal of ophthalmology · 2025Article
- Real-world outcomes of cataract surgeries using a new type of enhanced monofocal toric intraocular lens.Scientific reports · 2024Article
- Analysis of keratometric measurements in accordance with axial length in an aged population.Scientific reports · 2022Article
- Evaluation of Decentration, Tilt and Angular Orientation of Toric Intraocular Lens.Clinical ophthalmology (Auckland, N.Z.) · 2021Article
Corrections and comments
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
backgroundCurrently, there is no standard technique for determining corneal astigmatism. The iTrace wavefront aberrometry of cornea calculated steep power and axis based on the best Zernike mathematical fit from all topo data within 4 mm circle. It was supposed to be more accurate than iTrace simulated keratometry which was calculated based on only 4 points on the circle of 3 mm. This aim of this study was to evaluate visual outcomes and rotational stability after toric intraocular lens (IOL) implantation using the wavefront aberrometry of the cornea with iTrace.
settingSingle site in China, Shanxi Eye Hospital, Shanxi, China.
designProspective case series.
methodsThe study included 85 eyes of 63 patients undergoing phacoemulsification and toric IOL implantation. The IOL power and cylinders were chosen with the help of the iTrace toric planning program using wavefront keratometric astigmatism. Astigmatic changes were assessed using Alpins vector method over a 3-month follow-up period.
resultsPreoperative mean corneal topographic astigmatism was 1.91 diopters (D) ± 0.69 (standard deviation). Postoperative mean refractive astigmatism decreased significantly to 0.48 D ± 0.34. Surgical induced astigmatism was 1.73 D ± 0.77 and the mean correction index was 0.89 ± 0.22, showing a slight undercorrection. The proportion of astigmatism ≤0.50 D increased from 0 to 71.8% postoperatively.
conclusionsThis is the first study on evaluation of clinical outcomes of toric IOL implantation in corneal astigmatism patients using iTrace wavefront keratometric readings. The findings show that use of iTrace built-in toric calculator is safe and effective for planning toric IOL surgery for wavefront keratometric astigmatism.
trial registrationCurrent Controlled Trials ISRCTN94956424 , Retrospectively registered (Date of registration: 05 February 2020).
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