Night Vision
Adequate zinc and vitamin A must both be present for normal dark-adapted vision. Supplementing vitamin A alone will not resolve night vision problems if zinc deficiency is also present. Zinc is required to activate vitamin A by converting…
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Adequate zinc and vitamin A must both be present for normal dark-adapted vision. Supplementing vitamin A alone will not resolve night vision problems if zinc deficiency is also present. Zinc is required to activate vitamin A by converting it to its active form.