2.Secondly, blood pressure
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Blood pressure, whether elevated or low, is one of the most common causes of blurred vision. If your blood pressure is higher or lower than 120 over 80, you may have a condition that must be managed with a few lifestyle adjustments and likely prescription blood pressure medication to keep your blood pressure under control.
If you have a family history of high blood pressure, you are at a greater risk for developing these conditions, and your risk also increases if you consume a poor diet, smoke, or consume excessive amounts of alcohol.
When your blood pressure drops dangerously low or rises dangerously high, you may experience blurred vision. If this occurs, you may need to visit the emergency room rather than wait for a doctor’s appointment.
Occasionally, it may be the only symptom of sudden changes in blood pressure, but you may also experience vertigo, nausea, vomiting, numbness, tingling, or fainting.