Thanks Glos Guy,
I did have an eye test around 18 months ago but the optometrist didn’t understand what I meant (I’m terrible at verbal situations). In the end I was just told my vision is still good enough to drive without glasses but was prescribed some for use with screens due to astigmatism instead. Sadly they caused the same nausea issues as the car though, despite repeated attempts at short-term wears to get used to them so I gave up in the end. I think it’s something to do with being able to see around the rims, as I can wear wraparound sunglasses ok.
I’m no longer in a position to travel to an optician until I can get some improvement in the car situation though, which may be a contradiction! I haven’t been able to use any form of public transport, taxis, lifts or even escalators for several years now. My car really is my only form of transport unfortunately so I need to try and find a way to make this work.