Sounds like "floaters." I would consult an Ophthalmologist about this. In most cases they aren't serious, but annoying and usually occur with aging, however, if you are young, this is NOT normal.
Go to your Local Eye Doctor an Octomotrist. They can do all the test about your eyes sound like you might need glasses.They can be very helpful I never knew i need glasses till I went this year!
Squiggly lines are fairly common, just talk to you eye Doctor and see if you need glassed, lot's of times this can solve the problem, it sure worked for me.
Good luck, and God bless.
Kat....
I yhink it's probaly loss of sleep. But it may not be. You might wanna call the local nurse and ask.