Pentacam, Corvis ST and Scansys: morphological and biomechanical parameters of corneal were obtain by Scansys, Pentacam and Corvis ST
Study summary
Comparison of the screening and diagnosis ability of the novel Scheimpflug-based tomography device (Scansys) with Pentacam and the Scheimpflug-based biomechanics device (Corvis ST) for keratoconus.
Eligibility
Sex
ALL
Min age
—
Max age
—
Healthy volunteers
Accepted
Inclusion criteria:
* Best corrected visual acuity (BCVA) ≥ 20/20;
* No other eye diseases except myopia and astigmatism;
* The cornea was transparent, and there was no cloud or pannus;
Exclusion Criteria:
* The presence of ocular diseases other than myopia and keratoconus;
* Ocular trauma;
* Previous ocular surgery;
* Patients were required to stop wearing soft contact lenses for at least 2 weeks and rigid contact lenses for at least 4 weeks before examination;
* Pregnant and lactating women;
Primary outcome measure(s)
screening and diagnosis ability — one year Calculate the cut-off values, sensitivity and specificity of parameters measured by Pentacam, Corvis ST and Scansys in diagnosing keratoconus. Use Receiver operating characteristic curves (ROC) to analyze the optimal parameters to distinguish between the three groups.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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