Definition: Disc of 3mm-5mm diameter, coloured yellow by a pigment: it lies at the rear of the eye just below the optic disc (where the optic nerve enters the eye). * The fovea, the region of highest visual acuity, with the highest concentration of cone cells, lies in the centre of the yellow spot. * Also known as the macula lutea of the retina.
Related Terms: fovea
Previous Term: Yellow Book Next Term: YIQ