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Coding without a laptop: Two weeks with AR glasses and Linux on Android

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760 points mikenew | 1 comments | 14 May 25 15:11 UTC | HN request time: 0.248s | source
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inatreecrown2 ◴[17 May 25 23:10 UTC] No.44017686[source]▶
What I always wonder about with these Headsets is how can this not damage your eyes, focusing them at such short distance for prolonged periods. Anybody with experience in using such a device would like to comment on this?
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Waterluvian ◴[17 May 25 23:25 UTC] No.44017748[source]▶
So this is probably a silly question but… can’t you fool your eyes into focusing at any distance you want if you’ve got a stereo screen at a fixed distance (ie a headset)?

Isn’t this just a function of the parallax when rendering both screens?

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1. dTal ◴[17 May 25 23:36 UTC] No.44017800[source]▶
Focus is distinct from convergence - convergence is how much you have to cross your eyes to look at something, but focus is where muscles squish and stretch your eyeballs to change the distance of your retinas from your pupils. Just like a camera, if your eye is not focused at the real distance to subject, it will look blurry because your pupil is not a perfect pinhole, but has area (so a single eye is already seeing the same object from slightly different angles, on either side of the pupil).

Usually your brain learns a strong correspondence between focus and convergence, but this can be unlearned quite easily, and indeed must be in order to view e.g. VR, 3D films, Magic Eye pictures, etc... - all of which encode 3D information through convergence, while requiring your eyes to focus on a fixed plane.