A year ago at a routine eye test the optician found the above at the back of my eye. Called it a birthmark although it's never been spotted before and I've been having eye tests 20 or more years. They took repeat images and scans and said it was fine, but then said I needed to go for yearly checks without saying why. I went yesterday and it was the same again, they spent ages scrutinising the scan and imaging results and I had to repeat a scan, then optician said there was nothing to worry about as the mark was flat. Should I be worried? It was Specsavers if that's relevent. Has anyone else got a mark like this?