Disturbed Vision
Vitamin B deficiency may cause disturbed vision, numbness, and tingling sensations in toes, feet, hands, arms, and legs. A person with a vitamin B deficiency will also have nerve damage.
Nerve damage is often first noticed in the toes and fingers because they are farthest away from the heart, where blood has its highest concentration of vitamin B. Vision problems can include blurred or double vision and eye floaters (like specks of dust that float around in your line of vision).
Vitamin B helps to repair the nerves when they become damaged. Vitamin B is also needed for the myelin sheath that covers nerves. When the myelin sheath becomes worn away or damaged, it leads to nerve damage.
Numerous studies have shown a connection between vitamin B deficiencies and many symptoms. The National Institutes of Health (NIH) has investigated the links between these symptoms and vitamin B12 deficiency. However, similar findings have also been made regarding other types of vitamin B deficiencies.
In a study conducted by the NIH, researchers found that among participants at least 40 years of age, those with higher levels of antibodies related to vitamin B12 deficiency were more likely to report experiencing some type of vision problem than those with lower levels of these antibodies.
Participants reported that they had trouble seeing clearly when driving at night or when there was a lot of glare or shiny surfaces in their line of sight. Other participants reported experiencing an inability to adjust quickly from bright to dimmer lighting conditions.
