One of those ‘something in my eye’ stories:
I say I’m “mostly” stereoblind because despite my eyes’ poor grasp of trigonometry, the optical center of my brain seems to work just fine. I discovered this the first time I held a 3DS and played Pilotwings Resort. To be perfectly honest, I really didn’t expect much from the console. But clever readers have already noticed that my sight lines meet at just the right distance for holding a 3DS.
After playing with the depth slider off for a few minutes, I slid it up out of sheer curiosity and saw something I had never seen in my life: a third dimension.
Not only was I “seeing into the screen” the way so many others feel when playing a 3DS for the first time, I was seeing in a direction that had previously been literally invisible to me.