Repeatability and reproducibility of a-scan biometry quantitative findings.
Τίτλος | Repeatability and reproducibility of a-scan biometry quantitative findings. |
Publication Type | Journal Article |
Year of Publication | 2009 |
Authors | Tsinopoulos, I. T., Tsaousis K. T., Symeonidis C., Chalvatzis N., & Dimitrakos S. A. |
Journal | Curr Eye Res |
Volume | 34 |
Issue | 6 |
Pagination | 447-53 |
Date Published | 2009 Jun |
ISSN | 1460-2202 |
Λέξεις κλειδιά | Aged, Aged, 80 and over, Biometry, Cataract, Diagnostic Techniques, Ophthalmological, Eye, Female, Humans, Male, Observer Variation, Prospective Studies, Reproducibility of Results |
Abstract | PURPOSE: To determine repeatability and reproducibility of A-scan biometry quantitative findings in order to uniformly evaluate lenticular cataract changes.MATERIALS AND METHODS: Seventeen eyes from seventeen cataract patients were examined by three (trainee ophthalmologists). Results (ratio of mean internal lens spikes height/lens anterior surface spike height) were compared using coefficient of variation (CV), repeatability coefficient (CR), and intraclass correlation coefficients (ICC).RESULTS: Intra-observer consistency was CV = 0.36, CR = 0.49, and ICC = 0.778 for the first operator; CV = 0.33, CR = 0.52, and ICC = 0.642 for the second operator; and CV = 0.32, CR = 0.53, and ICC = 0.567 for the third operator. Concerning inter-observer agreement: CV (in 6 of 7 eyes) was > 8%, CR was > 0.21, and intraclass correlation coefficient for all eyes was < 0.81.CONCLUSIONS: Regarding repeatability and reproducibility, although there is a tendency for statistical significance, variability of the results does not allow the use of the method as a complementary clinical tool for comparing results. Standardization of this procedure, in order to achieve higher test reliability, might be the aim of relevant future studies, although there are a number of points that have to be addressed. |
Alternate Journal | Curr. Eye Res. |
PubMed ID | 19899979 |