I barely use it, but I might be particularly sensitive to blurriness/vision discomfort. Objects are not perfectly crisp for me unless ~2 feet away. I got my eyes checked and will re-try with the minor prescription. Mac mirroring was especially blurry. So far it's been good for watching videos while traveling.
I have the same problem with everything being slightly blurry, including Mac mirroring, rendering it unusable. It's very annoying given I have very good vision normally, but have so much trouble seeing in Vision.
I discovered recently that I can focus fine on my hand a few inches from my face in real life, but the default onscreen keyboard position on Vision is too close for me to see clearly, even though its "much further away".