TG has no depth perception. I’m not saying that in the “Oh, I’m so silly; I ran into a wall. I must not have depth perception” kind of way. Optometrists have actually told him that he must have little to no depth perception.
He seems to do okay without it. I mean, it’s not like he cuts himself every time he uses a knife or falls down each flight of stairs he attempts. He even played soccer for years, in goal no less. Coaches really only thought he dove for the ball more often than he needed to.
Obviously his body is compensating for this problem, and he’s figured out his own coping strategies without even knowing it. I still wonder how often it actually affects his day-to-day life without even knowing it. He can’t see 3D effects in movies, for example. He also has a little trouble knowing where he is in the lane while driving.
It definitely affects his gaming, especially with things like platforming. He might think he’s perfectly lined up with the platform, when in reality he’s about to miss completely. Surprisingly, though, it isn’t as frequent a problem as you’d think — more of an every now and then kind of thing. I’d never heard of this kind of thing before meeting TG, and I wonder how common a problem having no depth perception really is.
Dr. Google tells me that there are indeed one-eyed cues that indicate depth, like shading or relative size, but it makes sense that some of those things would be misleading in a fabricated video game world. Research from the University of Rochester has even shown that FPS games can help improve vision. Maybe TG’s early gaming was better for him than we realized.