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.
Double vision is the most common symptom of sixth nerve palsy. You may notice this vision impairment when both eyes are open or when you're looking at something in the distance. Sometimes, double vision occurs when looking in the direction of the damaged eye. Itâs also possible to have sixth nerve palsy without double vision.