What is the visual symptom, and it cause, often experienced by diabetic patients during episodes of increased blood sugar?
a. Blurred vision - caused by changes in the shape of the lens of the eye due to fluctuations in blood sugar levels
b. Double vision - caused by damage to the nerves controlling eye movements
c. Eye pain - caused by changes in the blood vessels in the eye and increased pressure
d. Light sensitivity - caused by damage to the nerves in the eye related to processing light