Liquid can enter the tear and cause Retinal Detachment. This is quite serious. The victim sometimes sees a storm of floaters, which represents blood cells from a broken retinal vein. Fortunately, there are surgical techniques to repair a torn retina and save vision. Laser light is used to close veins and reattach the retina to the eye wall.
Eye surgeons can also remove the vitreous, and replace it with another clear liquid.
When I first noticed a floater many years ago, I hoped that it would disappear by itself, as they sometimes do. That did not happen, but because my floater only appeared in bright light, when I moved my eyes in a specific direction, I usually did not notice it. Probably weeks or even months passed in which I ignored it completely. But lately it has become larger. Outside, in bright light, it often flies in front of me.