The aim of our investigation was to measure discrimination of targets localized in the foveola, the central 20 arc min of the retinal area. In the first experiment, we used a matrix of discs on a gray background. The size of disks was 3 arc min. The brightness of disks changed symmetrically from the gray equal to the background to white and black. The task of observer was to discriminate whether the brightness of the disks varied. The human discrimination performance near the limit of resolution was extremely small. The observer can discriminate only 2-4 levels of brightness of 20 disks presented in foveola. In the second experiment, we used the Mollon-Reffin Minimalist (M-R-M) color vision test to determine how successfully individuals can discriminate color differences in the foveola. The size of disks was again 3 arc min. In contrast to brightness discrimination, color discrimination was much better according to Mollon-Reffin test. This data add to our old experiments, that performance of foveola is 160-200 separate pixels, limited by point spread function.