@article {Miglior174, author = {S Miglior and E Albe and M Guareschi and G Mandelli and S Gomarasca and N Orzalesi}, title = {Intraobserver and interobserver reproducibility in the evaluation of ultrasonic pachymetry measurements of central corneal thickness}, volume = {88}, number = {2}, pages = {174--177}, year = {2004}, doi = {10.1136/bjo.2003.023416}, publisher = {BMJ Publishing Group Ltd}, abstract = {Purpose: To assess reproducibility of central corneal thickness (CCT) measurement by means of ultrasonic pachymetry. Methods: Fifty one volunteers underwent three sessions of CCT measurements, each consisting of three CCT measurements, performed by each of three different observers. Intra- and interobserver reproducibility was calculated by means of intraclass correlation coefficient (ICC). The expected range of variability between two independent evaluations was calculated using scatter plots of each test-retest difference against their mean. The standard deviation of the mean differences in the test-retest scores was used to describe the differences in the score spread. Results: The ICC ranges of the intra- and interobserver evaluations were 0.95{\textendash}0.97 and 0.89{\textendash}0.95 respectively; the expected variability was ⩽{\textpm}1\% and ⩽{\textpm} 2\% respectively (95\% confidence interval). Conclusions: The measurement of CCT by means of ultrasonic pachymetry is highly reproducible.}, issn = {0007-1161}, URL = {https://bjo.bmj.com/content/88/2/174}, eprint = {https://bjo.bmj.com/content/88/2/174.full.pdf}, journal = {British Journal of Ophthalmology} }