I've never heard of the yellowing around the eyes as a part of depression. I do know that physicians do check the eyes of people who are vitamin B-12 deficient.
I'm glad the trip went well and I'm really glad to read that he's contacting the children more.
Please take care of yourself and be careful w/your eye.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.