I don't know if it's something that's specific to me since I have astigmatism or if I'm just plain retarded, but I always had a problem of iron sights being blurry when trying to aim in VR. Today I noticed that I don't have this problem at all if instead of lightly squinting my right eye I open it wide. It made shooting guns way more enjoyable since I don't have to deal with barely seeing what I'm looking at.