I see "fireworks" when I close my eyes.
Flashes of light.
Thanks for sending your query to us.
What you call as fireworks is known as flashes by us.This occurred due to some degenerative changes at the periphery of retina.So what you have to do is to get your retina, especially the periphery checked in detail by a specialist.This to rule out any changes at the periphery,if present,they are to be dealt accordingly.
In the meantime,you have to avoid exerting yourself,no lifting of weights and avoid sports with jerky movement like badminton.
Do get back to me in case of any further query in this regard