Depends: Lattice can be a site of weakness with retinal jiggling causing the light flashes. If it only happens when you cough, and not in between and you see no new floaters and the vision remains good, then you can wait it out. If the flashing is continuous or the other factors appear, then have your ophthalmologist (you are not of course seeing an optometrist for this-right?), check it out again.
Answered 9/28/2016
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