Fig 1.
Example of one trial of Adjustment CST consisting of four Gabor patches at four different orientations and a spatial frequency of 6 cpd.
Fig 2.
Psychophysical procedure of the new contrast sensitivity (CS) test (Adjustment CST) following the method of adjustment and a total of 15 trials, which means all five selected spatial frequencies were measured three times.
Fig 3.
Main study test procedure with a total of 8 repetitions due to 8 stimulation conditions.
Table 1.
Verification values of TueCST, Adjustment CST and Adjustment CST versus TueCST regarding median and interquartile range (IQR), agreement (Bland-Altman), reliability (Intraclass Correleation Coefficient (ICC)) and repeatability (Coefficient of Repeatability (COR)) all measured in logCS and time measured in sec (n = 5, except for 24 cpd: n = 4).
Table 2.
Contrast sensitivity (CS), in logCS, measured before any stimulation as reference and after each stimulation condition including short- (S), middle- (M), long-wavelength light (L) and polychromatic light (P) stimulating the eye screen full-field (FF) or only the optic nerve head (ONH).
Median, interquartile range (IQR) and area under the logarithmic contrast sensitivity function (AULCSF) are listed to compare each condition (n = 30; *** p<0.0001).
Fig 4.
Contrast sensitivity in logCS (median and interquartile range) before (Reference) and after stimulation under different conditions: S ONH (short-wavelength range at optic nerve head), S FF (short-wavelength range via screen full-field), M ONH (middle-wavelength range at optic nerve head), M FF (middle-wavelength range via screen full-field), L ONH (long-wavelength range at optic nerve head), L FF (long-wavelength range via screen full-field), P ONH (polychromatic light at optic nerve head) and P FF (polychromatic light via screen full-field) (n = 30; *** p<0.0001).
Fig 5.
Normalized intensity (normalized spectra including luminosity function V(λ)) of stimulation conditions with short- (S), middle- (M), long-wavelengths (L) and polychromatic (P) light emitted from ViewPixx/3D.