Adam's sin brought death and all other ills, such as birth defects, into the world. But even people born with defects can accomplish a lot of good.
http://www.lifewithoutlimbs.org/
http://www.lifewithoutlimbs.org/
His invisible attributes, namely, his eternal power and divine nature, have been clearly perceived, ever since the creation of the world, in the things that have been made. So they are without excuse.
Romans 1:20 ESV
Romans 1:20 ESV