The destruction of sight, wherever the injuries be sustained, follows the same law: all colours are aﬀected in the ﬁrst place, and lose their saturation. Then the spectrum is simpliﬁed, being reduced to four andsoon to two colours; ﬁnally a grey monochrome stage is reached, although the pathological colour is never identiﬁable with any normal one. Thus in central as in peripheral lesions ‘the loss of nervous substance results not only in a deﬁciency of certain qualities, but in the change to a less diﬀerentiated and more primitive structure’.
Maurice Merleau-Ponty, Phenomenology of Perception
art, color, perception, philosophy, sensory-processing, vision