Very interesting :)
Carrots are quite rich in Vitamin A, also known as Retinol, which, while also helping with promoting healthier skin, teeth, bony and soft tissue and mucus membranes, it also gives pigment to the eyes retina, promoting good vision particularly in poorer lighting. So there's SOME reality to the myth I think, but yeah I also think people have it in their mind that you could get night vision just by eating carrots! XD
Good post man! Looking forward to more