Healthy controls | Parkinson's disease patients | ||||
---|---|---|---|---|---|
Mean | SD | Mean | SD | Significance (p) | |
VA ETDRS 100 | −0.06 | 0.096 | 0.18 | 0.26 | 0.001* |
VA ETDRS 2.5 | 0.44 | 0.13 | 0.59 | 0.22 | 0.010* |
VA ETDRS 1.25 | 0.58 | 0.16 | 0.62 | 0.23 | 0.009* |
Pelli-Robson | 1.89 | 0.11 | 1.71 | 0.17 | 0.002* |
CSV 1000 3 cpd | 1.72 | 0.16 | 1.49 | 0.35 | 0.001* |
CSV 1000 6 cpd | 1.94 | 0.13 | 1.62 | 0.34 | <0.001* |
CSV 1000 12 cpd | 1.62 | 0.17 | 1.26 | 0.41 | <0.001* |
CSV 1000 18 cpd | 1.11 | 0.22 | 0.73 | 0.34 | 0.004* |
Farnsworth AC CCI | 1.11 | 0.22 | 0.73 | 0.34 | 0.851 |
Farnsworth C-index | 1.10 | 0.20 | 1.24 | 0.42 | 0.093 |
Farnsworth CCI | 1.07 | 0.12 | 1.14 | 0.24 | 0.110 |
Farnsworth Conf Angle | 63.90 | 11.15 | 65.84 | 7.49 | 0.392 |
Farnsworth S-index | 1.56 | 0.22 | 1.64 | 0.39 | 0.278 |
Farnsworth time | 78.67 | 28.96 | 82.91 | 33.10 | 0.616 |
Lanthony AC CCI | 1.05 | 0.19 | 1.02 | 0.18 | 0.489 |
Lanthony C-index | 1.43 | 0.39 | 1.64 | 0.53 | 0.058 |
Lanthony CCI | 1.30 | 0.23 | 1.44 | 0.37 | 0.066 |
Lanthony Conf Angle | 62.31 | 14.74 | 71.91 | 9.25 | 0.002* |
Lanthony S-index | 1.69 | 0.43 | 1.95 | 0.48 | 0.020 |
Lanthony time | 77.14 | 25.99 | 84.09 | 39.31 | 0.431 |
The asterisk indicates those values with statistical significance after Bonferroni correction for multiple tests (p<0.0125 for VA ETDRS 100, 2.50 and 1.25; p<0.0125 for Pelli-Robson and CSV 1000E measurements; p<0.0083 for Farnsworth and Lanthony tests).
AC CCI, age-corrected colour confusion index; CCI, colour confusion index; C-index, confusion index; Conf Angle, confusion angle; cpd, cycles per degree; ETDRS, Early Treatment Diabetic Retinopathy Study; PD, Parkinson's disease; S-index, scatter index; VA, visual acuity.