Significance of Aang's left eye and hand lighting up According to the Avatar series, the solar eclipse is when the Fire Nation was at its weakest. Why do Aang's left hand and eye light up? I don't believe he is left handed, so what is the significance?
I haven't evidence for this answer however, I think that it's for illustrate both states of the Avatar Aang:


Aang as a human
Aang in it's Avatar state.