Impaired Vision
Blurred or impaired vision is one of the symptoms of vitamin B12 deficiency and it can occur when the vitamin B12 deficiency prolongs without any treatment. As a result, the nervous system suffers damage which further disrupts the functioning of the optic nerve thus disturbing the vision. The damage to the optic nerve can impair the nerve signals that move across from the eye to your brain and leads to optic neuropathy. Although it sounds serious, it is often possible to reverse the condition by supplementing with vitamin B12.