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Abstract #66582 Published in IGR 17-3
The SPARCS: a novel assessment of contrast sensitivity and its reliability in patients with corrected refractive error
Sun Y; Erdem E; Lyu A; Zangalli C; Wizov SS; Lo D; Spaeth EE; Richman J; Spaeth GLBritish Journal of Ophthalmology 2016; 100: 1421-1426
PURPOSE: To explore the reliability of the Spaeth/Richman Contrast Sensitivity (SPARCS) test and to assess the contrast sensitivity (CS) distribution among subjects with various refractive errors. METHODS: Cross-sectional study. Ninety-three individuals (182 eyes) with varying amounts of refractive error were included in this study and divided into six groups according to their spherical equivalent. CS was evaluated using Pelli-Robson (PR) and SPARCS assessments. Each eye was tested twice with both measurements. Outcomes included the correlations of PR and SPARCS scores, the test-retest agreement of the two measurements and the limits of agreement between tests of CS measurements. The distribution of CS among the six groups was compared. RESULTS: Pearson correlation analysis showed statistically significant correlations between SPARCS and PR scores (p<0.001). Reliability analysis showed that SPARCS had better test-retest agreement than PR, with SPARCS exhibiting a higher intraclass coefficient (ICC=0.635). Bland-Altman plots showed that the mean difference of measurements was close to 0 for both CS measurements. Among the six refractive groups, there were no significant differences in CS scores with either measurement. CONCLUSIONS: SPARCS appears to be a reliable assessment for CS. The difference in CS among myopes, emmetropes and hyperopes wearing their habitual correction was statistically insignificant in this study. CLINICAL TRIAL NUMBER: NCT01300949, post results.
Department of Ophthalmology, Glaucoma Research Center, Wills Eye Hospital, Jefferson Medical College, Philadelphia, Pennsylvania, USA.
Full articleClassification:
6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)
