We can tell from the eyes if someone is looking at something close or far away. When we look at something at very close range, the eyes rotate so that the irises can both aim directly at the subject (A). This turning inward brings the irises closer together (see diagram, top). The farther away the subject, the more separation between the eyes (B)—up to a point. That point is reached when the eyes go out of convergence, the position the eyes will naturally fall into when we are looking off into space (C).
Was this article helpful?