This paper reviews work on the development of spatial and temporal contrast sensitivity in human infants. Both electrophysiological and behavioral techniques have been used. Infants' spatial contrast sensitivity functions exhibit a large deficit in spatial resolution and overall contrast sensitivity relative to adult functions. These measurements also reveal continuous development between one and six months of age. Infants' temporal resolution does not exhibit a large deficit relative to adults'. Indeed, critical flicker frequency is essentially adult-like by two months of age. This combination of coarse spatial resolution and fine temporal resolution is analogous to What is observed in the peripheral retina of the adult visual system.