Table 1: Agreement A. Visual acuity at far with the new app (VADC at 0D) versus the ETDRS chart; Agreement B. Contrast sensitivity from the new app (CSDC at 0D) and the contrast sensitivity function for frequencies of 3,6,12 and 18 cycles per degree.

- Defocus Curve App
Mean ± SD
Median (Range)		 Conventional Tests
Mean ± SD
Median (Range)		 Wilcoxon Test Passing and Bablok
β0 (95% CI) β1 (95% CI)
Agreement A VADC at 0 D ETDRS chart - -
Visual Acuity (logMAR) -0.04 ± 0.09
-0.1 (-0.2 to 0.2)		 -0.05 ± 0.08
0 (-0.2 to 0.1)		 P = 0.51 0 (-0.05 to 0) 1 (0.5, 1)
Agreement B CSDC at 0 D CSF test - - -
Contrast Sensitivity (logCS) 0.83 ± 0.23
0.8 (0.2 to 1.3)		 1.74 ± 0.19 a
1.7 (1.4 to 2.1)
1.81 ± 0.21b
1.8 (1.3 to 2.3)
1.47 ± 0.27 c
1.5 (1.0 to 1.9)
1.05 ± 0.33 d
1.1 (0.5 to 1.6)		 P < 0.001
P < 0.001
P < 0.001
P < 0.001		 1.03(0.9 to 1.3)*
1.0 (0.75 to 1.3)*
0.43 (-0.2 to 0.6)
-0.4 (-1.05 to 0.03)		 0.83(0.5 to 1)
1.0(0.6 to 1.2)
1.25(1.0 to 2.0)
1.67 (1.17 to 2.5)*

VADC at 0 D: Visual acuity obtained from the 0 D defocus of the defocus curve; ETDRS chart: Visual acuity measured with the ETDRS chart; CSDC at 0 D: Contrast sensitivity obtained from the 0 D defocus of the defocus curve; CSF test: Contrast sensitivity function measured for frequencies of 3 cfnd (a), 6 cfnd (b), 12 cfnd, (c) and 18 cfnd (d).
SD: Standard deviation of the mean; 95% CI: Confidence interval at 95%.
*β0: Significantly different from 0, both methods differ at least by a constant amount.
*β1: Significantly different from 1, both methods differ at least by a fnrofnortional difference.