8 ounce bottles are easily available in the New York Area, the little coke shape glass bottles, not half cans or plastic bottles.
Anyways, it makes no sense at all that because something is in a bottle that says contact lens solution on it they just waive it through. It just proves the stupidity of the program, because nobody would ever think to bring something they shouldn't have through by putting it a contact lens solution bottle knowing it wasn't going to be checked.