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. 2014 Jun 25;10:22. doi: 10.1186/1744-9081-10-22

Table 3.

Color discrimination thresholds and age correlation coefficients

  Binbocular Monocular OD Monocular OS
Correlation Coefficient*
  
  
  
Controls
  
  
  
   Protan axis
 r = -0.11 (0.041)
 r = -0.16 (0.023)
 r = -0.06 (0.066)
   Deutan axis
 r = -.023 (0.008)
 r = -0.11 (0.040)
 r = -0.17 (0.021)
   Tritan axis
 r = -0.14 (0.031)
 r = -0.04 (0.074)
 r = -0.18 (0.019)
Tetraplegic
  
  
  
   Protan axis
 r = 0.70 (0.041)
 r = 0.69 (0.033)
 r = 0.90 (0.033)
   Deutan axis
 r = 0.30 (0.038)
 r = 0.10 (0.045)
 r = 0.10 (0.056)
   Tritan axis
 r = 0.00 (0.036)
 r = 0.06 (0.079)
 r = 0.01 (0.109)
Diplegic
  
  
  
   Protan axis
 r = 0.48 (0.047)
 r = 0.30 (0.053)
 r = 0.34 (0.039)
   Deutan axis
 r = 0.42 (0.049)
 r = 0.49 (0.042)
 r = 0.26 (0.045)
   Tritan axis
 r = 0.43 (0.038)
 r = 0.36 (0.043)
 r = 0.35 (0.041)
Hemiplegic
  
  
  
   Protan axis
 r = 0.36 (0.066)
 r = 0.25 (0.079)
 r = 0.04 (0.049)
   Deutan axis
 r = 0.33 (0.052)
 r = -0.07 (0.067)
 r = 0.05 (0.064)
   Tritan axis r = 0.11 (0.061) r = 0.21 (0.059) r = 0.10 (0.061)

*Correlation coefficient (p-value).