Imago Dei

I just finished a book called Discovering Images of God, and it has led to the question who or exactly what is the image of God? Is it the perfect body? or every body? Genesis, "In the image of God, he created them, male and female, he created them." Ok so, male and female = created in the image of God. We all agree, right? Adam and Eve, perfect bodies, created in the image of God. But what about deformed bodies? or bodies with serious mental and biological issues. Are those also the image of God?

It seems to me that people (obviously) do not see all people as equal, created in the image of God, and Christians are no exception to this. If deformity and disease and "deviance" are less than the image of God, how can that possibly be overcome? It doesn't seem fair, and how you understand biology and bodies relating to God, informs more than you might realize.