Table 1.
Demographic characteristics of the population study.
Figure 1.
Achromatic contrast sensitivity performance over normal aging (analysis by quadrants).
A decrease in contrast sensitivity using ISF perimetry (A) was more evident than that found using M-biased perimetry (B). Error bars represent standard error of the mean (SEM). The dependent measure corresponds to CS measured in decibel units (* corresponds to p<0.001, significant regression equations depicted here and in subsequent figures with regression data). IN - Inferior nasal; SN - Superior nasal; IT - Inferior temporal; ST - Superior temporal.
Figure 2.
Illustration of progressive sensitivity loss in achromatic CS over age groups assessed by ISF perimetry, using representative cases for each age group.
Grayscale bar depicts contrast sensitivity in decibels. Darker regions correspond to worse CS.
Figure 3.
Illustration of gradual decline in achromatic CS over age groups observed with FDT perimetry using representative cases for each age group.
Grayscale bar depicts contrast sensitivity in decibels. Darker regions correspond to worse CS.
Figure 4.
Color vision (red-green and blue-yellow channels) across normal aging.
A trend for loss in chromatic performance was identified from [30;40[to [40;50[(marginally significant for tritan axes). Error bars depict standard error of the mean (SEM). The dependent measure is color excursion units measured in CIE u‘v’ color space units (note that high chromatic thresholds relate to low CS).
Figure 5.
Age-related changes in low-level motion perception using the Local Speed test.
Error bars depict standard error of the mean (SEM). The dependent measure corresponds to geometric mean of the experimental reversals in threshold units (°/s) (*p<0.001). OM, oblique meridian; HM, horizontal meridian.
Figure 6.
Visual dorsal stream performance during normal aging.
High-level functions showed a fast deterioration with an accelerating pattern. Error bars depict standard error of the mean (SEM). The dependent measure is % of coherence (percentage of signal dots that are necessary for the subject to report the presence of a sphere) (*p<0.001). UR, until response; FI, Fixed Presentation Interval.