Anyone got explanations for these?

[Jenny A]

I sounds like an oculomotor dysfunction, meaning your eyes don't track properly.

I thought it might be something to do with reading instead, my eyes are used to going from left to right in a concentrated line but not the other way around.

Might be. Who knows. I'm no doctor and certainly not an ophthalmologist. But our ophthalmologist recently told us some kinds of oculomotor dysfunction are evidence of disease, or caused as a side affect of medication. I'm not an expert and I wouldn't panic. But getting your eyes checked once in a while is a good thing, and I'd bring it up then. ---- Yes this is one of those, we just had something like this happen in our family and it turned out to be a real problem sort of things (also easily fixed). So it's at the top of my mind. For all I know you are right about the cause.