Trial reportIndian journal of ophthalmology2020
Randomized trial comparing visual outcomes of toric intraocular lens implantation using manual and digital marker.
Trial report in Indian journal of ophthalmology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT07176897 (Refractive Accuracy of Toric Intraocular Lens Implantation Using Digital Marking Compared to Conventional Marking), which is not on this map. Cited by 13 papers, 2 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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.
Refractive Accuracy of Toric Intraocular Lens Implantation Using Digital Marking Compared to Conventional Marking
Who cites it
13 citing papers in PubMed, 2 syntheses or guidelines pooled it, 20 citations in OpenAlex.
- Digital marking versus manual marking technique for toric intraocular lens alignment: a meta-analysis.BMC ophthalmology · 2025Pooled it
- Management of cataract in dry eye disease: Preferred practice pattern guidelines.Indian journal of ophthalmology · 2023Guideline
- Comparing toric intraocular lens alignment: intraoperative image-guided system versus manual marking in cataract surgery: a randomized clinical trial.International ophthalmology · 2025Trial
- The impact of cataract progression on accuracy of intraocular lens power measurement.PloS one · 2021Trial
- Advances in cataract surgery: is a new era on the horizon?Current opinion in ophthalmology · 2026Review
- Intraoperative Degree Misalignment in Toric Intraocular Lens Implantation When Using Conventional Compared to Digital Marking.Clinical ophthalmology (Auckland, N.Z.) · 2026Article
- Comparison of two digital alignment systems for toric intraocular lens implantation.BMJ open ophthalmology · 2024Article
- Insights into the rotational stability of toric intraocular lens implantation: diagnostic approaches, influencing factors and intervention strategies.Frontiers in medicine · 2024Review
- Manual versus Markerless (Image-guided System) Toric Intraocular Lens Implantation Outcomes for Astigmatic Correction in Cataract Surgeries.Acta medica Philippina · 2024Article
- Supplemental Toric Intraocular Lenses in the Ciliary Sulcus for Correction of Residual Refractive Astigmatism: A Review.Ophthalmology and therapy · 2023Review
- A new intraocular lens marker to guide the implantation of toric intraocular lenses in small and mid-dilating pupils.Indian journal of ophthalmology · 2023Article
- Comment on: Improving toric intraocular lens alignment skills of ophthalmology residents.Indian journal of ophthalmology · 2022Article
- Digital versus slit-beam marking for toric intraocular lenses in cataract surgery.BMC ophthalmology · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe aim of this study was to compare the visual outcome of participants undergoing toric intraocular lens (IOL) implantation after cataract extraction using manual marking versus digital marking for intraoperative guidance.
methodsRandomized controlled trial of participants with cataract and corneal astigmatism of 1.00 D-4.50 D. The eyes were grouped into manual marking (Group 1) and digital marking (Group 2). Preoperative Uncorrected distance visual acuity (UDVA), Corrected distance visual acuity (CDVA), and corneal astigmatism were determined. IOL power and axis of alignment were determined using Barrett toric calculator. Eyes were marked by bubble marker and Mendez ring in group 1 and by VERION (Alcon, Fort Worth, Texas) digital overlay in Group 2. Postoperatively, UDVA, CDVA, residual refractive cylinder and IOL misalignment were determined (iTrace system, Tracey technologies) at 1 week, 6 weeks, and 3 months.
resultsA total of 61 eyes of 50 participants, 31 in Group 1 and 30 in Group 2, were studied. The mean postoperative cylindrical error was 0.50 ± 0.39 D in Group 1 and 0.29 ± 0.34 D in Group 2 (P = 0.03). 67.74% (n = 21) and 93.55% (n = 29) eyes achieved a residual astigmatism of ≤0.50 D and ≤1.00 D, respectively, in Group 1, whereas 83.33% (n = 25) and 100% (n = 30) eyes achieved a residual astigmatism of ≤0.50 D and ≤1.00 D, respectively, in Group 2 at 3 months postoperatively. Toric IOL misalignment was 4.71 ± 3.12° in Group 1 and 4.03 ± 2.99° in Group 2 (P = 0.39).
conclusionAccurate manual marking and digital marking are equally effective guides for toric IOL alignment, intraoperatively.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.