visual acuity, <qualitatively>
visual resolution, <qualitatively>
capacity for seeing distinctly fine details that have very small angular separation
Note 1 to entry: This entry was numbered 845-02-43 in IEC 60050-845:1987.
Note 2 to entry: This entry was numbered 17-1403 (1.) and 17-1415 in CIE S 017:2011.