Dd is just over 3, (a september birthday) and she talks quite well and is counting to 10 and identifies animals and shapes knows what writing is but can't read.
She reverses blue and yellow. Has no problem with green but thinks purple is red orange, brown and pink are fine.
I know colour blindness in girls is rare 0.5% as compared to 8% in boys, and blue yellow (tritonomaly) is rarest. My sight is fine, as good as you can get. I did not know of any problems with her dad.
For parents of colourblind children, how soon did you notice?
Did anybody have a child that confused colours that is now fine?
How soon could she be tested and is there a way of figuring it out by looking at or counting the colour cones that a professional can do?