Which two color deficiencies can perceive a match between the fields in the mixture field range of 0-73?

The ability to perceive a match between fields in the mixture field range of 0-73 is rooted in the specific color deficiencies being discussed. Protanopia and Deuteranopia are both types of dichromacy where individuals lack one of the cone pigments necessary for color discrimination.

In protanopia, individuals lack the long-wavelength sensitive cones (red cones), while in deuteranopia, individuals lack the medium-wavelength sensitive cones (green cones). Both conditions will affect the perception of colors in this range, often leading to a narrowing of what colors can be matched compared to individuals with normal color vision. However, studies have indicated that individuals with these types of color deficiencies still show the capability to perceive matches within certain limits in the mixture field, which is limited to the range specified.

The other options include tritanopia, which affects perception of blue-yellow colors, and the anomalous trichromats who have a modified type of normal color vision, allowing them greater sensitivity and matching ability than those with true dichromacy. Therefore, they would not be applicable in this scenario regarding the specific matching capabilities defined by the question. Thus, protanopia and deuteranopia align perfectly with the criteria of perceiving color matches in the