What type of color defect would optic neuritis most likely cause according to Kollner's Rule?

Optic neuritis can cause a red/green color defect, which aligns with Kollner's Rule. This rule posits that damage to the retinal receptive elements primarily affects blue/yellow color vision, while damage to the retrochiasmal pathways results in red/green defects. In the case of optic neuritis, the neural pathways posterior to the optic nerve are involved, leading to a disruption in the processing of red and green colors.

The red/green color defect arises due to the involvement of the cones responsible for these wavelengths, specifically the long (L) and medium (M) wavelength-sensitive cones. Damage to the optic nerve can exacerbate this reduction in color discrimination, particularly affecting the red and green hues primarily.

In contrast, other types of defects listed, such as blue/yellow, monochromacy, and achromatopsia, are generally related to different underlying mechanisms or locations of pathology. Blue/yellow defects usually stem from retinal issues, monochromacy leads to a situation where an individual perceives the world in shades of gray, and achromatopsia denotes a complete inability to perceive color, typically resulting from congenital issues rather than acquired ones like optic neuritis. Thus, the prominence of red/green