Original: The visual system accomplishes a number of complex tasks , including the reception of light and the formation of monocular representations ; the construction of a binocular perception from a pair of two dimensional projections ; the identification and categorization of visual objects ; assessing distances to and between objects ; and guiding body movements in relation to visual objects .
Simplified: The visual system has the complex task of ( re ) constructing a three dimensional world from a two dimensional projection of that world .