None of these new petroleum products are true distillates, they are extracts and creations of the petroleum engineers gluing bits and pieces of hydrocarbon molecules from the refinery waste stream together to make useful, salable products.
The Causes of Double Vision. Double vision, or diplopia, occurs when your eyes donât work as a team. When your visual system is working correctly, both eyes should point in the same direction at an object. Your eyes see two different images, which your brain combines to produce a single, 3D image.
Tunnel vision can be caused by: 1  Glaucoma, a disease of the eye. 2  Retinitis pigmentosa, a disease of the eye. 3  Blood loss (hypovolemia)  Alcohol consumption. In addition, the vision becomes blurred or double since eye muscles lose their precision causing them to be unable to focus on the same 1  object. Sustained (1 second or more) high accelerations.