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.
Dao is actually a generic word used to denote any member of a family of single-edged, broad-bladed cutting or slicing tools, but in common, everyday usage means knife. The weapon, also known as dan dao when just one is used, is thereby thought to be an adaptation of the kitchen knives common to Chinese cuisine. Dao also appears in the names of such polearms as the pudao and guan dao, due to the knife-like shape of their blades.