The stroke symptom that patients typically experience "upon awakening" in the morning is "painless."
A sudden halt in blood flow to the brain can present 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 eye stroke. Though the condition is treatable if diagnosed early, it may foreshadow a more serious stroke.
A growing body of research suggests that early injury to the small blood veins feeding the eyes may be a sign of impending cardiovascular disease.
These obstructions can occasionally result in abrupt changes in vision, such as blurriness, dark regions, or shadows.
According to Harvard Health, ocular (eye) strokes may be a sign of a more serious stroke. In the majority of cases, just one eye is affected by an eye stroke.
Thankfully, when there is a less severe blockage in the smaller arteries, vision usually returns in 80% of cases.
The absence of blood flow to the tissues in the front section of the optic nerve can have serious effects on vision if treatment is put off, therefore the disease is still dangerous.
Millions of nerve fibres and blood vessels are carried by the optic nerve, which also conveys impulses to the brain.
Damage to nerve tissue occurs when it is totally deprived of nourishment and oxygen, which can cause blindness.
According to the website of Penn University, "Those with eye stroke are typically given minimal warning." Some people detect a black spot or shadow in their vision that affects the upper or lower half of their visual field. Eye stroke patients typically awaken in the morning with no discomfort and a loss of vision in one eye.
The health organisation continues, "Loss of visual contrast and light sensitivity are further symptoms."
According to Penn Medicine, certain people may be more susceptible to the illness because of the shape of their discs.
This is so because nerve fibres that flow from the eye to the brain through the optic nerve must pass through an opening called the optic foramen.
A person's foramen may be smaller than typical, which could result in a congested arrangement of the optic nerves.
The health organisation continues, "Those who had substantial cardiovascular disease and also took the medicine Viagra are greater at risk for the disease, though the association is not well understood.
According to the British Heart Foundation, the best chance of a full recovery is provided by an early diagnosis.
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