👉 The ruling fluid, also known as the rulus fluid, is a clear, viscous substance produced by the body's conjunctiva during inflammation or irritation. It serves as a lubricant and protective barrier for the eye's surface, particularly the conjunctiva. When the conjunctiva becomes inflamed, as in conditions like conjunctivitis, the ruling fluid increases in quantity and becomes more viscous, providing additional protection and facilitating the healing process by minimizing friction and potential damage to the eye's surface.
