Table 3 Color discrimination thresholds and age correlation coefficients
| Â | Binbocular | Monocular OD | Monocular OS |
|---|---|---|---|
Correlation Coefficient* | Â | Â | Â |
Controls | Â | Â | Â |
   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 | Â | Â | Â |
   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 | Â | Â | Â |
   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 | Â | Â | Â |
   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) |