ArticleClinical ophthalmology (Auckland, N.Z.)2026
Parameter-Dependent Agreement and Proportional Bias Between a Domestically Developed Scheimpflug-Based Imaging System and Pentacam HR.
Article in Clinical ophthalmology (Auckland, N.Z.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
0 citing papers in PubMed.
No citing paper in PubMed yet.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Purpose: Accurate assessment of anterior segment parameters is essential for clinical decision-making and ophthalmic research. With the increasing availability of domestically developed anterior segment imaging systems, independent evaluation of their measurement characteristics relative to established devices is required. This study aimed to compare anterior segment measurements obtained using Scansys TA517, a domestically developed Scheimpflug-based imaging system, with those from Pentacam HR. Methods: A total of 214 eyes were examined using both devices during the same visit. Anterior chamber depth (ACD), anterior chamber angle (ACA), anterior chamber volume (ACV), white-to-white corneal diameter (WTW), pupil diameter (PD), and the ACD/WTW ratio were analyzed. Inter-device differences were evaluated using Bland-Altman analysis, and proportional bias was assessed by linear regression of inter-device differences against the mean of the two measurements. Results: Inter-device differences varied substantially across parameters. ACD and the ACD/WTW ratio demonstrated minimal mean bias, narrow limits of agreement, and no proportional bias, indicating high inter-device stability and reliability. In contrast, ACA and ACV exhibited larger bias, wider limits of agreement, and significant proportional bias. WTW and PD showed intermediate stability with evidence of magnitude-dependent discrepancies. Conclusion: In conclusion, inter-device agreement between Scansys TA517 and Pentacam HR is parameter-dependent. Linear and ratio-based parameters demonstrated greater stability than angle- and volume-based measurements, and proportional bias was present for several parameters. These findings highlight the importance of parameter-specific and device-specific interpretation when comparing anterior segment measurements across imaging systems.
Indexed as
Identifiers
What OpenQuestion holds
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.