How to know if you are color blind? These are the signs that can go unnoticed

The article addresses the question of how to identify if a person is color blind, highlighting that it is not always easy to realize that colors are perceived differently. Many people live with shades that have always been that way for them, which means they do not have a reference with which to compare their own vision with that of others. This lack of comparison makes it difficult to identify color blindness early. The text explains that many cases go unnoticed for years, and that some people even reach adulthood without knowing they are color blind. The article appears to be an introduction to a broader topic about the signs of color blindness that can go unnoticed.