[teruakohatu]

Do our eyes ever lock onto (or centre on) a pixel, or even a small group of pixels for any useful amount of time?

I would think our brain is doing some level of motion tracking on a point while our eyes build up a mental image of the local environment.

Pressing virtual UI buttons with eye tracking makes sense, but if my eyes flick to the wrong character in a text file, it's going to wreck my concentration and end up being more effort than tying a vim chord.

[cgreerrun]

In this comment thread, for e.g., you can have your eyes target the [+] or [-] icons, and then click to expand/collapse those. If you had the "eye-track button" you move you eye to [+], tap button, and left click.

The main use case for me is jumping cursor close to some position while text editing. I'm a Vimmer and I typically just want to look somewhere and instantly move my cursor to where I'm looking sometimes. Easymotion style jumping is nice (I use it in fzf menus, for instance). But there's still that slight mental overhead of figuring out what I gotta type in to jump. Or if I use a mouse then I take hands off keyboard, move mouse, hands back on keyboard. Which sounds pretty simple but it's so slow compared to just jumping around in vim w/ hands always on keyboard.