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What are flashes?

Answer: 

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.

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