Of course snakes can see well! Hence the expressions "Eyes like an eagle"... oh wait that's eagles... uh, nevermind.
Snakes see just about as well as midgets... which isn't well at all. In fact snakes use their tongue to see for the most part... just like us midgets. It's really cool actually... and if you don't believe me, the next time you see a midget, wait for him to stick his tongue out and taste what's around... then you will believe. Freak.
I remember hearing about a snake once, that could see very well. In fact, too well. It was a basilisk. It was giant and had very venomous fangs. Luckily Harry Potter saved the day, and saved my tail. That is, until voldermort rocked my world... Where the heck was he then?
So to answer your question... yes, they see well with their senses, if that's what you were implying by "see".
