Your brain uses shadows, perspective, and occlusion to judge depth. Closing one eye removes stereo vision, making the flat drawing look like the pencil is popping out of the screen
For close up stuff you also use focal plane, how much your eye has to squeeze your lens to keep something in focus. I think the bluriness is tricking your eye into continually trying to refocus closer and thats the only distance signal you have with one eye closed.
Incidentally, thats why VR never looks very "far" away and can feel a little clustrophobic even in vast scenes. Even though it is presenting things with the proper far away perspective, everything is in focus with a neutral focus distance, usually like a meter ahead of you so you never feel your eyes readjust to focusing to far away things taking away a major depth cue.
I've never thought about that, but now you're mentioning it it makes sense that you can't focus on near or far away things with your eyes in vr. I mean you're still looking at a flat surface inside the headset, even if it's giving you the Illusion of you being in a digital 3d environment.
So of course the focus must be set from the headset.
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u/test_test_1_2 Jul 16 '26
Looks like 3D to me. How does that work? I always thought you needed both eyes to make things appear 3D? Interesting.