every couple of months, i will get this strange when im focusing on text on computer or paper
the blur is like a semi circle which starts small and gradually gets larger and eventually moves out to the edge of my eye and dissapers
it can go on for about 15 minutes, im really worried, i went to the opticians recently for an eye examintion and everything was fine
what is this blur, is it serious?
also when focusing on the tv, if theres a particluar colour ie red, i look away to something else i will see a coloured shape which wears away
i dont know if im over reacting but help please