What is the first sign of a vitamin A deficiency?

The initial sign of a vitamin A deficiency typically manifests as night blindness or difficulty seeing in dimly lit environments. This condition affects the ability to perceive objects clearly under low light conditions, which can be mistaken for a need for corrective eyewear. Adequate intake of retinol, the active form of vitamin A, is essential for maintaining optimal vision in varying lighting conditions. Seeking medical advice for proper diagnosis and treatment is recommended if experiencing symptoms suggestive of vitamin A deficiency.