If by irritating you mean your eyes hurt, you should definitely see your optometrist. Your eye sight isn't something you should mess with.
If by irritating, you mean an annoying dry feeling. You might have just dry eyes.
If you do just have dry eyes, you can use saline solution or some artificial tears that you can get at any pharmacy. If you don't feels some immediate relief then again see you optometrist.
There are also some dieases that cause people to not produce tears and there are medications to address this that can be prescribed to you by a physician.