Geez, they don't show kids this stuff anymore? I knew about this when I was, like, six.
https://visionaryeyecare.wordpress.c...t-in-each-eye/
Fun fact: I have a slightly lazy eye... not anything that shows, but it affected the development of my vision growing up. The long-term effect is that the blind spot in my left eye is far more pronounced than in my right.
It's freaky. When I close my right eye, it's like I can see things but can't make them out. Like I know there will be a word in front of me but I can't read it. Most of the field of vision does that weird appearing/disappearing trick you get when you take the blind spot test.
But when both eyes are open, no problems. Bizarre.