Explanation: Pupillary react s not fully effective before 32 weeks, infints unable to adjust to bnet ligh disturb infant desp cyeles, and early internction Higher light levels Some evidence that infant's benefit from cycled lighting after 32 weeks, futer weight(Jorgensen 1997) The unborn baby marures within Mothers circadian rhythms" (day night) Light is perceived as a seres of grey shadows through the Mothers abdominal wall, being lighter or darker depending on the time of day. Following delivery an infant's visual perception develops further as they experience cycled light and other visual stimulation Infants need to gradually become accustomed to night day changes to support circadian rhythms, transition to normal night time sleep pattems'