Hi Annie dont know if this is something that you were trying to explain but i generally notice it when i am watching TV. Its like when someone/thing is moving i sometimes takes a mini second for the image to be correct or focused?? dont know if that makes sense. I have read many posts and havent come across anything like this and it doesnt happen in day to day chores just mainly for me when i am relaxing infront of the TV. Opticians confirm my eyes are ok and i have an opthamologist appointment in 3 weeks which i am going to mention, but its worth a mention that this has only just started to happen when my anxiety increased so i think its all down to that. Let me know if the symptoms sound familiar if so i am glad i read ur post as i thought i was going nuts.
Rachel x