Are there differences in the rate and sequence of development among children with different visual disorders?
This bar chart presents the milestone results for children with the four most common visual disorders: optic nerve hypoplasia, albinism, retinopathy of prematurity, and cortical visual impairment. The milestones again are arranged from left to right in the order in which the milestones are acquired by typically developing children. The milestones are plotted along the x-axis; the month of acquisition, along the Y-axis. The expectation is still that the height of the bars would increase (indicating later ages) as the milestones progress from left to right. For each visual disorder, the height of the bars fluctuates, suggesting a different sequence of milestone acquisition for each group.
