Table 4.
Acuity threshold (mm) | Test used | Reference |
---|---|---|
0.87 | Gap detection (m) | Johnson and Phillips, 1981 |
Grating orientation | ||
0.84 | discrimination (m) | Johnson and Phillips, 1981 |
Grating orientation | ||
0.98 | discrimination (h) | Van Boven and Johnson, 1994 |
Grating orientation | ||
0.96 | discrimination (h) | Sathian and Zangaladze, 1996 |
Grating orientation | ||
1.23 | discrimination (h) | Vega-Bermudez and Johnson, 2001 |
Grating orientation | ||
1.06 | discrimination (h) | Grant et al., 2006 |
m, Mechanized stimulator used; h, hand-held stimulus.