What happened to the cloudy white of the eyes with bloodshot eyes?

The white of the eye is cloudy and yellow with blood, mostly due to the following conditions. 1, a long time a large number of smoking caused by the harmful substances of cigarettes will be deposited on the surface of the eye for a long time, resulting in cloudy and yellow white eye is not clear. 2, a long time stay up late, poor rest caused by. 3, conjunctivitis caused by conjunctivitis can be divided into bacterial conjunctivitis, allergic conjunctivitis, viral conjunctivitis, immune-related conjunctivitis.