Debra, I love Ingrid's books! They're very fun to read aloud, too.
I'm about a third of the way through FIXING MY GAZE, by Susan Barry. My optometrist recommended it. It's the true account of a woman who had strabismus as a child but never developed binocular vision (even though her eyes were surgically treated to look "straight" and each eye has 20/20 vision). Just as we were told with our son who had strabismus, she was told there was a critical period after which the brain can't be plastic anymore, and if you don't fix the binocular vision issue by then (age 9), you are out of luck. Well, neuroscience has come a ways, and it turns out the brain IS plastic in adulthood. And this woman learned to see in 3D at age FIFTY with optometric vision therapy (no, not pseudoscience internet therapy, but basically physical therapy for the brain done by licensed optometrists). I had never heard of this before (like her, my son uses both eyes very rapidly back and forth--but one at a time), and figured my kid would basically never seen in stereo. The book is FASCINATING. She is a neuroscientist and the original article about her was written by Oliver Sacks. Now I'm wondering what else could be solved with brain research. I'd love to know if there's any intersection with this kind of research and say, dyslexia. Completely different causes and phenomena, but both involve visual stimulus and the brain interpreting it. If you do not have stereo vision, I recommend reading this to find out about it!