Researchers predict that by the year 2050, about half of the world’s population will have myopia.
Considering the target demographic, a significant number of potential VR users suffer from myopia already. Why are there no more VR headsets with adjustable focus?
Several vendors offer replaceable lenses, or various addons to fit the glasses in, but the obvious solution used by the early cheap headsets like GearVR - adjustable distance between lenses and the display, is not being utilized for some reason.
Is it a technical problem, economical problem? Are the modern lenses somehow tuned for a specific distance?
From my limited experience with a Quest 2, yes, the images should be stable. It had a focus wheel. I don’t wear glasses and don’t know what is missing, but I borrowed it from someone that does wear glasses and he never complained. They are not traditional glasses lenses, they are fresnel lenses - the ridgy kind you might see on lighthouse beacons. Where as curved glasses lenses typically have a single curve to them and have limits to how close the object can be before misalignment of the image due to the curved nature of view, fresnel lenses have a flat outer surface and, in this case, are viewing a flat image panel. The only variable is where the convergence point sits in your eye. For standard near/far sightedness, this should be sufficient