What are flashes?
Flashes can occur for a number of reasons - if they appear to be patterned or zigzagged, it might be due to migraine.
However, most flashes occur together with floaters and are usually a result of the gel within the eye rubbing or pulling on the retina.
As with floaters, it's wise to visit your optician if they become more frequent or worsen.
You should seek professional advice if you are concerned about your eye health.Book an eye test