I don't think Facebook is the final piece of the puzzle.
VR technology still have to deal with problems that I haven't seen any VR project be even
aware that they exist. Have any VR project ever considered researching into the kinds of eye diseases and injuries that their users may already have? I haven't seen any VR project ever mention anything about image adjustments for people with torsional (which I do have a little of) or any other kind of heterotropia. Some examples:

If they never thought of solving such a problem which would be dead easy to adjust the image for, what about problems like , which I did have and still happens to me when my eyes get really tired?
(image from EyeWiki)VR research still seems to be at the same stage that gamepads and keyboards were before ergonomic issues became a serious concern. Millions of people may already have small degrees of conditions like those and haven't realized it or been properly diagnosed yet. I predict this becoming a big concern after VR headsets have become really popular.
Ph'nglui mglw'nafh mankrip Hell's end wgah'nagl fhtagn.
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