Which of the following would be considered a visual disturbance during a stroke?

A visual disturbance during a stroke is defined as a change in vision that can occur due to the impact of the stroke on areas of the brain that process visual information. The correct answer indicates deterioration or loss of sight in one or both eyes, which can occur if the area of the brain responsible for vision suffers damage. This can manifest as blurred vision, double vision, or even temporary complete loss of vision in one or both eyes, known as homonymous hemianopsia.

The other options describe symptoms that are associated with a stroke but do not fit the definition of a visual disturbance. Incoordination of the extremities relates to motor function and coordination issues, while sudden onset of paralysis refers specifically to a loss of motor control in the muscles, often seen on one side of the body. A sudden headache, often described as severe or the worst headache ever experienced, can indicate certain types of strokes such as hemorrhagic strokes but does not pertain specifically to visual disturbances.