Amy I have never noticed it with any of my dogs but their eyes are so dark I probably never would notice. With a husky's eyes I am sure it is very easy to see. I work for an ophthalmologist and I don't know if the link below will help or not. Sometimes in my dictation at the office he mentions a condition called "afferent pupillary defect." I don't even know if this is relevant for dogs or is anything at all related to what Nebo might have. It could be a place to begin to start a search though. I am glad that whatever it is, seems to go away. I wish I could be of more help.

http://www.eyemdlink.com/condition.asp?conditionid=54