The term 'Pigmented Part of the Eye' refers to the Uvea, which is a layer of tissue in the eye that contains melanin, a pigment that gives color to the eye. The Uvea is composed of three parts: the choroid, ciliary body, and iris. The choroid is the layer of tissue between the retina and sclera, and it contains blood vessels that supply oxygen and nutrients to the eye. The ciliary body is responsible for controlling the shape of the lens, and the iris is the colored part of the eye that controls the amount of light entering the eye.