Beta-Carotene

When the wise-cracking cartoon character Bugs Bunny asks "what's up doc?" while chomping down another carrot, if one was an optometrist, one might answer, "good vision Bugs". The pigment, beta-carotene, that colors carrots, sweet potatoes, pumpkins, and other yellow and orange vegetables, is a precursor for vitamin A (retinol), an essential component for vision.