Visual Psychophysics and Physiological Optics Effect of Scoring and Termination Rules on Test–Retest Variability of a Novel High-Pass Letter Acuity Chart
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چکیده
Citation: Shah N, Dakin SC, Whitaker HL, Anderson RS. Effect of scoring and termination rules on test–retest variability of a novel high-pass letter acuity chart. Invest Ophthalmol Vis Sci. 2014;55:1386–1392. DOI: 10.1167/iovs.13-13340 PURPOSE. Test–retest variability (TRV) limits our ability to detect clinically significant changes in visual acuity (VA). We wanted to compare the effect of scoring and termination rules on TRV for logMAR charts, employing either conventional or pseudo high-pass (Vanishing Optotype) letters.
منابع مشابه
Effect of scoring and termination rules on test-retest variability of a novel high-pass letter acuity chart.
PURPOSE Test-retest variability (TRV) limits our ability to detect clinically significant changes in visual acuity (VA). We wanted to compare the effect of scoring and termination rules on TRV for logMAR charts, employing either conventional or pseudo high-pass (Vanishing Optotype) letters. METHODS VA measurements and TRV were compared in 50 uncorrected normal observers (17 male, mean age 42....
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PURPOSE To determine boundary values of test-retest reliability and sensitivity to acuity change that are unlikely to be exceeded in any clinical situation, for a popular visual acuity chart (Lighthouse/ETDRS) with three scoring methods; to discuss general methodological issues associated with statistical accuracy of optotype chart testing; and to link measures of test reliability to measures o...
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BACKGROUND/AIMS The advantages of logMAR acuity data over the Snellen fraction are well known, and yet existing logMAR charts have not been adopted into routine ophthalmic clinical use. As this may be due in part to the time required for a logMAR measurement, this study was performed to determine whether an abbreviated logMAR chart design could combine the advantages of existing charts with a c...
متن کاملSCIENTIFIC REPORT Development of a clinically feasible logMAR alternative to the Snellen chart: performance of the ‘‘compact reduced logMAR’’ visual acuity chart in amblyopic children
Background/aim: The ‘‘compact reduced logMAR’’ (cRLM) chart is being developed as a logMAR alternative to the Snellen chart. It is closer spaced and has fewer letters per line than conventional logMAR charts. Information regarding the performance of such a chart in amblyopes and children is therefore required. This study aimed to investigate the performance of the cRLM chart in amblyopic childr...
متن کاملDevelopment of a clinically feasible logMAR alternative to the Snellen chart: performance of the "compact reduced logMAR" visual acuity chart in amblyopic children.
BACKGROUND/AIM The "compact reduced logMAR" (cRLM) chart is being developed as a logMAR alternative to the Snellen chart. It is closer spaced and has fewer letters per line than conventional logMAR charts. Information regarding the performance of such a chart in amblyopes and children is therefore required. This study aimed to investigate the performance of the cRLM chart in amblyopic children....
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