convergence

n. 1. Any process of coming together. 2. Ocular convergence is the inward rotation of the eyes to focus on a light source so that the image falls on the fovea, which puts the image into sharpest focus possible and provides the muscular tension required to serve as a depth cue. 3. In physiology the coming together of one or more structures, as in the convergence of a neural pathway on a neural center.