A symptom of a stroke that people notice when they wake up in the morning - neurologist Alekhina Sudden changes in vision upon awakening can portend a serious stroke.

The sudden stoppage of blood flow to the brain can manifest itself in one of several ways, depending on which part of the organ is affected.. Sometimes the blood supply to the eyes is cut off, causing an ocular stroke.. Although this condition is treatable, if diagnosed early, it may herald a more serious stroke..

Evidence is mounting that early damage to the tiny blood vessels leading to the eyes can predict impending cardiovascular disease..

Sometimes these blockages cause sudden vision changes such as blurry vision, dark areas or shadows..

Ocular (eye) strokes may herald a more serious stroke. When an ocular stroke occurs, it almost always occurs in only one of the eyes..

Named an early sign of pancreatic cancer Fortunately, vision returns in 80% of cases with less severe blockage of small arteries. However, this condition remains dangerous, as the lack of blood flow to the tissues located in front of the optic nerve can have serious consequences for vision if treatment is delayed..

The optic nerve transmits signals to the brain and carries millions of nerve fibers and blood vessels.. When it becomes completely cut off from its supply of nutrients and oxygen, nerve tissue is damaged, which can lead to vision loss..

“People with ocular stroke usually receive little warning.. Most people with ocular stroke notice loss of vision in one eye upon waking in the morning without pain.. Some people notice a dark area or shadow in their vision that affects the upper or lower half of their visual field.. Other symptoms include loss of visual contrast and light sensitivity,” says neurologist Alexandra Alekhina, especially for MedicForum..

B12 deficiency: a sign when you wake up in the morning - seen in 90% of cases Some people may be at higher risk of the disease due to the shape of their discs. This is because the nerve fibers leading to the brain and down the optic nerve must enter the eye through an opening known as the optic fistula.. If a person's orifice is smaller than average, it can lead to congestion of the optic nerves..

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