The blobs of the visual coex are associated with:
Layers 2 & 3 of the visual coex contain clusters of cells; the cells contain high concentration of cytochrome oxidase. These clusters are called "pegs" or "blobs". They are concerned with color vision. Axons from interlaminar region of LGN end in layers 2 & 3.
Ocular dominance
Orientation
Color processing
Saccadic eye movements
Special Senses