While the nuclear explosion in RON has been realistically picturized with a mammoth fireball, it is very bright and seems to dazzle the eyes everytime.
Is this something harmful in the long run when we keep seeing it game after game?
I ran with it ...
Yes it does!
You should lower the brightness on your monitor when you hear the warning "nuclear launch detected." This is why they provide this warning so you have time to do it. If you don't have a monitor that allows you to quickly adjust settings, then you may need to pause the game each time. Or buy a new monitor.
There's more detail in the manual. Or maybe the official strategy guide. I think.