Over time we see red staining around the eyes that is due to accumulation of a pigment called porphyrin which is found in tears. See your vet. Your first step should be to see your regular veterinarian or a veterinary ophthalmologist. They will examine the eye to make sure there is no foreign body is present.
The realm of the afterlife is called the world of the bardo. The term bardo is a general term which literally means in-between place and in this context denotes a transitional state, or what Victor Turner calls a liminal situation.
The dun gene also produces light guard hairs in the mane and the tail. Grullo or grulla is a color of horses in the dun family, characterized by tan-gray or mouse-colored hairs on the body, often with shoulder and dorsal stripes and black barring on the lower legs. In this coloration, each individual hair is mouse-colored, unlike a roan, which is composed of a mixture of dark and light hairs.