Any visual Information in two dimensions about relative distance that can be depicted in a picture or photograph and from which three-dimensional inferences can be drawn. This form of depth perception derives from monocular cues. Many studies have been carried out on when infants first respond to pictorial depth cues based on visual preference (with reaching) studies. Most studies have identified somewhere between 5 to 7 months as the first age appearance. This claim has recently been questioned by means of a meta-analyis. The main findings were that depth perception specified by pictorial cues was evident by 5 months and that it was better under monocular rather than binocular viewing conditions.
See Depth perception, Information, Meta-analysis, Motion parallax, Pictorial depth cues, Relative distance