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Deficiency of vitamin A |
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Answer» Answer: VITAMIN A deficiency (VAD) or hypovitaminosis A is a LACK of vitamin A in blood and TISSUES. ... Nyctalopia (night blindness) is one of the first signs of VAD. Xerophthalmia, keratomalacia, and complete blindness can also occur since vitamin A has a MAJOR role in phototransduction follow me |
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