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DF Ventura, AR Rodrigues, AA Moura, AC Vargas, MF Costa, JM de Souza, LL Silveira; Color Discrimination Measured by the Cambridge Colour Vision Test (CCVT) in Children and Adults . Invest. Ophthalmol. Vis. Sci. 2002;43(13):3796.
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Purpose: To determine in children and adults color discrimination of a target relative to a background in a situation of spatial and luminance noise. Methods: Subjects of three age groups were tested: Children, 7-11 yrs, n=18; Adult I, 18-30 yrs, n=73, Adult II, 31-45 yrs, n=12. Inclusion criteria were 20/20 Snellen acuity and absence of ophthalmological or neuro-opthalmological pathologies or known color vision deficiency. Adult I group was tested at USP (n=45) and in Belém at UFPA (n=28). The other two groups were tested only in SP. At USP the CCVT v2.0 was used with VSG 5 card and Sony FD Trinitron monitor; the UFPA group used a program developed locally for IBM RISC 6000 workstation and IBM 6091 19i monitor. Tests were performed monocularly or binocularly in the dark. Tests along the protan, deutan and tritan (Trivector) axes were followed by determination of 3 MacAdam ellipses. Results: The Children's thresholds differed significantly from those of Adult I group but were not statistically different from Adult II group in protan and tritan Trivector axes, nor in ellipse Fields 2 and 3. Adult I and II groups did not differ statistically (p<.001). Adult I groups from USP and UFPA were combined, given the absence of statistical difference (p<.001). The results are shown in the table below, expressed in u'v' units (x 103 for Trivector thresholds and x 106 for Ellipse area). View OriginalDownload SlideView OriginalDownload Slide Conclusions: Color discrimination measured by the CCVT improves from age 7-11 to early adulthood and decreases again in adults over 30. None Supported by CAPES-RENOR, CAPES-PROCAD, FAPESP and CNPq
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