Apple Vision Pro available in the U.S. on February 2

Re:Apple Vision Pro available in the U.S. on February 2 by FumblingBear on Monday January 08, 2024 @04:33PM (#38918489)

My understanding of it is that the eye-strain that people tend to get isn't from your eyes focusing on the glass, but rather due to the Vergence-Accommodation Conflict (VAC)[0]. Essentially, there's a mismatch between the vergence (a movement of both eyes in opposite directions simultaneously for a binocular-style effect), and the accommodation of the eye (the way your eyes change focus based on distance).

When those two things aren't in alignment, you can get a feeling of eye-strain. The way the lenses bend the light make it so the focal length that you're focusing on is further than the screen in front of you, so that isn't what is causing the eye strain.

Mind you, this is just my layman's understanding of the subject, so definitely take it with a grain of salt.

[0] - https://en.wikipedia.org/wiki/Vergence-accommodation_conflic...

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Re:Apple Vision Pro available in the U.S. on February 2 by ed on Monday January 08, 2024 @11:49PM (#38922452)

Focal depth is fixed to ~1.3m (for quest 3, don’t think we know the value for AVP yet).[1]

So you’re not focusing on the glass, but on the image at that virtual depth.

The strain comes from looking at things rendered further or closer than 1.3m.

1 - https://x.com/id_aa_carmack/status/1371485209603022853

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