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Comparison of the Concordance Between Digital Marking and Manual Marking for Toric Intraocular Lens Positioning

NCT07710963 · Status: NOT_YET_RECRUITING · Type: OBSERVATIONAL · Enrollment: 100

Last updated 2026-07-17

No results posted yet for this study

Summary

This cross-sectional comparative study evaluated patients from a single cataract center. In each eye, manual horizontal meridian axis line was marked on the cornea using the manual peripheral corneal marking technique (Horizontal Slit Beam Marking ), while the Verion digital image-guided navigation system provided a reference axis fixed at the horizontal meridian (0°/180°). The primary outcome measure was the difference in degrees between the digital marker and the manual marker horizontal meridian as measured intraoperatively. Agreement was assessed using Bland-Altman analysis, reporting the mean bias (systematic error) and 95% limits of agreement (LoA, mean ± 1.96 SD). A misalignment of ±10° was defined as the threshold of clinical significance.

Conditions

  • Cataract Surgeries

Interventions

OTHER

Verion Digital Marking

Verion Digital Marking Vs Manual Marking

Sponsors & Collaborators

  • Thammasat University

    lead OTHER

Eligibility

Min Age
18 Years
Max Age
90 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-07-10
Primary Completion
2026-09-30
Completion
2026-10-30

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07710963 on ClinicalTrials.gov