I went through several years of my life not knowing that I had red-green colorblindness. I found out when I was about 15 and it was a huge relief when I finally knew (I found out through a “color dot test” in my Biology book in high school). After I discovered that I had a condition, it made sense why I would make so many mistakes in identifying the correct colors of certain things in my everyday life- certain clothes seemed purple when they were really blue, leaves on a tree would look brown when they were really green, etc. etc.
Color Vision Testing
Take this test to find out if you have a colorblind condition. There are several other sites online, but this one has more explanation on the topic than others. It explains that it is more common in males, shows side by side comparisons of a normal’s person’s view and a colorblind person’s view, and so on…
One little side note that I find of funny: I passed Art in both high school and college with an A.