The short version
Carrots contain beta-carotene, which the body can convert into vitamin A. Vitamin A matters for vision, and deficiency can cause serious eye problems, including night blindness. In that narrow and important sense, carrots can matter for eyesight.
But eating extra carrots does not give people with already-normal vitamin A status sharper vision or special night vision. The popular version of the claim is much broader than the careful version.
The wartime part of the story
The myth also stuck because wartime British messaging helped it travel. A widely repeated version of the story is that carrots were promoted to help explain RAF night-fighter success while obscuring the importance of radar and related detection technology.
That is a better example of public messaging than of nutrition science. The broad shape of the story is well-supported enough to be part of the sites origin, but the exact historical chain still deserves to be documented carefully rather than repeated as trivia.
If you want the sourced version, read the full guide: Do carrots improve eyesight?
Why the name fits the project
Carrot Eyes is meant to be a calm guide to claims like that. Many everyday beliefs are not pure myths, but they are also not cleanly true. They often start from one real mechanism, one older study, one public-health message, or one cultural story, then spread far beyond what the evidence actually supports.
That is the kind of gap this site tries to close: not by mocking the original belief, and not by repeating it uncritically, but by separating the useful core from the exaggeration.
So what should readers take from it?
If a claim sounds widely known, that does not make it worthless or reliable. It may be a partial truth. The job here is to work out which part holds up, which part does not, and what practical conclusion a reader should actually use.
That is why the site is called Carrot Eyes.