1. Low Limit for Effective Signal Strength in the Stratus OCT in Imperative Low Signal Strength Cases

    Low Limit for Effective Signal Strength in the Stratus OCT in Imperative Low Signal Strength Cases

    PurposeTo determine the lowest limit of signal strength that is still effective for accurate analysis of optic coherence tomography (OCT) values, we investigated the reproducibility of OCT scans by signal strength (SS). MethodsA total of 668 subjects were scanned for measurements of retinal nerve fiber layer (RNFL) thickness using the Stratus OCT twice on the same day. The variability of overall RNFL thickness parameters obtained at different SS was analyzed and compared by repeated-measures of ANOVA and Spearman's correlation coefficient. Values of the intraclass correlation coefficient (ICC) and variability (standard deviation) of RNFL thickness were obtained. The false positive ...

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