7 hrs ago I began seeing white streaks flash in my left eye. I see in dark or light. No pain or vision loss. Would pressure, cold, or heat be gd?

Vitreous detachment . Sudden onset of flashing in one eye can be a sign of the vitreous jelly pulling away from the back of the eye known as vitreous detachment. Sounds like there is no loss of vision now but on occasion there can also be associated retinal detachment which can lead to a loss of vision and requires intervention. See your eye care professional and plan on having your eyes dilated for examination. .