What can i do to address the flashes of light in the corner of my eye?

See an MD eye doc: Flashes of light can be a symptom of pulling on the retina or retinal hole or detachment. Those who are very nearsighted are more prone to these problems but anyone can develop them. A thorough retinal exam with your pupils dilated should be done.

Get examined: You need a dilated retinal exam, sooner rather than later. It could be a retinal tear or detachment.