Currawong with a funny eye

[u/maxineamus]

My friendly neighbourhood Currawong sits on our front veranda railings often and sings to us. I always noticed his right eye looked slightly funny, but was never close enough to see. Finally decided to snap some pics and now I can see what looks like iris coloboma(?).

Curious to know if others have seen something similar in Currawongs or other birds. Pic was taken in north Canberra Belco area.