NOCTI Biomed Practice Exam 2025 – All-in-One Study Guide for Exam Success!

A common symptom of hypoglycemia, which refers to abnormally low levels of glucose in the blood, includes various signs that the body may exhibit in response to this condition. Blurred vision can occur because the brain and eyes depend on glucose as a primary energy source. When glucose levels drop, the functionality of various bodily systems, including vision, can be affected, resulting in symptoms like blurred vision.

While other symptoms such as heightened energy levels may seem plausible, they contrast the typical effects of hypoglycemia. Low blood sugar generally hampers physical and mental performance, leading to feelings of weakness or fatigue. Similarly, extreme fatigue is indeed a symptom of hypoglycemia, but it can be more subjective and overlapping with other conditions. Dehydration is not directly linked to hypoglycemia as a primary symptom; it's a separate issue that doesn't arise from low blood sugar specifically. Thus, blurred vision is recognized as a direct manifestation of the impaired energy supply to the nervous system caused by hypoglycemia, marking it as a common symptom.