Really hard to get pictures of a black dog, but does anyone know is this allergies or more? It started a few days ago on the right eye, and went away a few hours later... Then over the weekend the left eye swelled for a couple of hours and then it went away. I thought maybe she was allergic to the buffalo gnats that have been biting like crazy but today I just noticed it again and she has been in the house with me. Ideas? Should we go to the vet? I'm afraid by the time I get an appointment it will be gone again which is why I tried to get pictures.