Lattice degeneration with floaters on both eyes. Reviewed a week ago-no tear/hole. Last night, I had just one flash in left eye. Need uation immediately?

Flashing lights . Mean that the retina is involved and should be evaluated for retina holes or tears.
Flashes are an . Important signal from the retina that it may be undergoing a vitreous detachment. A posterior vitreous detachment or PVD is a natural and normal process, but is occasionally accompanied by flashes. These result from pulling on the retina and in perhaps 10-20% of patients may be associated with a tear. A tear can lead to a detachment of the retina which could lead to vision loss if not repaired.