This question came in from Annie:
Is there any way to find out if your child is color blind? Everett is now 2. He can count to 10 in Spanish, he knows his shapes, all kinds of things…but he doesn’t know his colors. It’s really bad – he doesn’t know hardly any of them and it seems like that is one of the first things they learn. I don’t know if there is a test for kids his age so we stop pestering him all the time, or if we just have to wait and see.
From what I could find online, most children are tested at 4 years old. Has anyone had their child tested earlier?
Updated to add: From the comments, Daniel left a link to a very good article he wrote about young children and colorblindness, including when and how to test. In fact, his whole site is full of useful information on colorblindness. In particular, he also has a great article on how to talk to your young child about being colorblind.