The effect of visual loss has an impact in the development of the visual cortex of the brain. The visual impairment causes the occipital lobe to lose its sensitivity in perceiving spatial processing. Sui and Morley (2008) proposed that after seven days of visual deprivation, a potential decrease in vision may occur. They also found an increasing visual impairment with deprivation after 30 days and 120 days. This study suggests that the function of the brain depends on visual input. May lost his eyesight at age three, when his vision was still not fully developed to distinguish shapes, drawings or images clearly. It would be difficult for him to be able to describe the world compared to a normal sighted person. For instance, May would have trouble differentiating complex shapes, dimension and orientations of objects. Hannan (2006) hypothesized that the temporal visual cortex uses prior memory and experiences to make sense of shapes, colours and forms. She proposed that the long-term effect of blindness in the visual cortex is the lack of recognition of spatial cues.