It is entirely dependent upon the reason for them. In short, get the fuc kkers checked out.
A common reason is that sometimes the 'jelly' inside the eye, detaches in small parts and floats around like squiggles and drops of ink in fluid.
A little alarming but depending on the reason, they are just reabsorbed into the sclera blood stream.
But get yourself up to eye casualty and prepare for a long wait. far better to know its harmless than the beginnings of a detached retina - that - if it were- would need immediate attention anyway.