Symptom Guide For Vitamin B12 Deficiency

Vision Loss

Vitamin B12 is among the eight components that make the vitamin B complex. Vitamin B12, which is found in milk and its products, eggs, fish, poultry, and meat, plays a vital role in sustaining proper brain function, DNA synthesis, protein metabolism, and protection of the nerves. Human liver can store five hundred times the amount of vitamin B12 we need, so dietary deficiency alone is rare.

However, when vitamin B12 levels go low, it can cause damage to the nerves, including the optic nerve that relays information from the eyes to the brain. The information relayed by the optic nerve includes color, brightness, and contrast. If the functioning of the optic nerve is impaired, our vision is impacted. Vision loss as a result of vitamin B12 deficiency may start with colors becoming less bright. The vision loss is gradual, and it may initially affect one eye or both. The nerve damage could be due to insufficient blood and nutrients reaching the optic nerve or by inflammation of the nerve.

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