Explanation

Night blindness occurs when the body lacks enough vitamin A. This vitamin helps eyes adjust to low light. Without it, seeing in darkness becomes very difficult or impossible.

Goiter comes from iodine deficiency. Bow-legs result from vitamin D shortage. Long sightedness is usually genetic. Only night blindness directly links to vitamin A deficiency.

Vitamin A is found in carrots, liver, eggs, and dark leafy greens. Eating these foods helps prevent eye problems and supports healthy vision.