Medically reviewed by Christine L. Larsen, MD Eye crust forms when mucus, oils, and debris accumulate, often during sleep.

The middle layer of the eye, known as the uvea, becomes inflamed when someone has eye inflammation or uveitis.

“It is possible that the dogs that show teary eyes during interaction with the owner would be cared for by the owner more,” hypothesised Kikusui. How to keep your pet cool this summer In ...