I just adopted an older Eskimo Spitz. He has got cataracts in both eyes. His one eye seems to collect alot of "gunk". I wipe it clean with a tissue. I have been feeding him Brewer's yeast and that has helped his skin and coat tremendously. Even his eye seemed to be getting better. Whatever is causing this eye problem seemed to be clearing up after a frightening blood blister appeared and popped near his eye. He still scratches it alot and I know it bothers him. The vet said it wasn't reason to worry too much and that it may clear up. I am not sure if it is related to his cataract condition. You may want to get your precious doggy checked for cataracts forming causing the eyes to be so dark. My dog "Dirtnap" is 10 years old but was told he developed the cataracts around 8-9 years of age.
Ps. I was also informed that long hair white dogs do develop hearing problems more than other dogs. Make sure you keep your dogs ear cleaned. Good luck!