Interesting. I like that he included the disclaimers, they were almost as interesting (brains are cool things). I have to admit, I was surprised when I put in Zoe’s prescription (+4 and +4.25) that things were so blurry. I guess I was under the mistaken perception that farsighted means you can see things that are far away, but things are blurry up close.

Ann,

You are correct. That level of blur from the simulator is what Zoe *would see* if she didn’t focus. She can focus, but you know what focusing causes… convergence of the eyes. So in many cases, a prescription like hers causes a choice: see blurry (as in the simulator) or double (from the esotropia). But it isn’t that simple, what really happens is the brain will, over time, simply turn off the crossed eye (amblyopia). The result? Single and clear vision, but reduced depth perception.

BTW, when are you going to add an avatar? The rotationally symmetric cyan pattern is great and all, but I know you have better ones.

Better? Hmm, it looked better as a bigger picture. But it’ll do for now.

Oh, and thank you for the added explanation. That clears things up (so to speak).

[...] eventually her brain will turn off the input from one eye leading to amblyopia.  (Many thanks to Dr. Bonilla-Warford of Bright Eyes news for helping me make sense of [...]