Unfortunately since there is only one screen, the focus does not work independently for each eye. This does mean that for people with large astigmatisms or big deviations in prescriptions for each eye, the product will not be able to get in full focus. I've seen some people use it with glasses, but it's not designed for that.
It's a trade-off, even though this does mean that there are limitations. I would recommend you try it before buying it to make sure it works for your specific situation.
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