Observational studyInternational ophthalmology2017
Comparison of Scheimpflug and swept-source anterior segment optical coherence tomography in normal and keratoconus eyes.
Observational study in International ophthalmology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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
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Who cites it
12 citing papers in PubMed, 26 citations in OpenAlex.
- Agreement between Sirius Scheimpflug-Placido tomography and Anterion swept-source OCT in keratoconic eyes stratified by prior corneal cross-linking: a retrospective cross-sectional agreement study.International ophthalmology · 2026Article
- Agreement between a swept-source optical coherence tomography and dual Scheimpflug Placido analyser in healthy, keratoconus suspect and keratoconus eyes.BMC ophthalmology · 2026Article
- Comparison of a Scheimpflug Camera and Optical Coherence Tomography in Evaluating Keratoconic Eyes Post Keratoplasty.Journal of clinical medicine · 2025Article
- Comparison of a New Scheimpflug Camera and Swept-Source Optical Coherence Tomographer for Measurements of Anterior Segment Parameters.Ophthalmology and therapy · 2023Article
- Corneal thickness measurements with the RTVue, Casia-2, and Pentacam devices in patients with mild-to-moderate keratoconus: a comparative study.BMC ophthalmology · 2023Article
- Anterior Ocular Biometrics Using Placido-scanning-slit System, Rotating Scheimpflug Tomography, and Swept-source Optical Coherence Tomography.Korean journal of ophthalmology : KJO · 2022Article
- A review of imaging modalities for detecting early keratoconus.Eye (London, England) · 2021Review
- The precision and agreement of corneal thickness and keratometry measurements with SS-OCT versus Scheimpflug imaging.Eye and vision (London, England) · 2020Article
- Scanning-slit topography in patients with keratoconus.International journal of ophthalmology · 2017Article
- Agreement in anterior segment measurements between swept-source and Scheimpflug-based optical biometries in keratoconic eyes: a pilot study.Therapeutic advances in ophthalmologyArticle
- Agreement between Placido Disc, Scheimpflug, and Optical Coherence Tomography-Based Measurements of Corneal Topography in Healthy Myopic Individuals.Journal of current ophthalmologyArticle
- Agreement Between Swept-source Optical Coherence Tomography and Rotating Scheimpflug Camera in Measurement of Corneal Parameters in Normal and Keratoconic Eyes.Journal of ophthalmic & vision researchArticle
Corrections and comments
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Authors and funding
8 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThe purpose of the study was to assess the agreement of anterior segment optical coherence tomography with its older well-known opponent i.e., Sheimpflug imaging in evaluation of the cornea in normal and keratoconus subjects.
methods107 normal and 56 keratoconus eyes were evaluated with the anterior segment optical coherence tomography followed by the Scheimpflug imaging. Parameters included axial keratometry data in both of steep and flat meridians, mean keratometry and the astigmatism values in the central 4.0 mm zone, central, thinnest and apex corneal thicknesses, Q-value in 8 mm zone and pupil diameter. Corneal topographic maps were recorded and were evaluated for anterior highest and lowest points, posterior highest and lowest points. Average values were recorded for analysis.
resultsAll anterior cornea keratometry indices showed perfect agreement between two devices in normal corneas; while the level of agreement in keratoconus cases ranged from moderate to strong. All posterior keratometry indices also showed perfect agreement in both groups; except for flat K in normal corneas and steep K in KC ones. The amount of corneal cylinder in normal corneas had perfect agreement, and moderate to strong agreement in anterior/posterior cornea in keratoconus group. Anterior highest and lowest points showed strong and perfect agreement in normal and keratoconus cases, respectively. Posterior highest and lowest points showed strong agreement in normal cases. Thickness indices (central, thinnest, and apex thicknesses) showed perfect agreement between two devices in both normal and KC groups. Mean values of anterior and posterior highest points were statistically higher in Scheimpflug system.
conclusionsAlthough two imaging technologies had statistically numerical different output, it seems that they have a good agreement in most parameters.
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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.