You had better not smoke or drink within a week after a Lasik eye surgery. If you really want to smoke, I suggest you find a swimming mirror to put on, thus smoke won't smoked your eyes. And there are something others you must pay attention. First, in two days, please wear the wind glasses or the sun glasses, when sleeping, please wear patches protection in order to avoid external forces cause corneal flap shift. Second, within one week, you had better not eat excitant food, after a week, eating has no special requirements. Third, after two weeks, do not splash water into eyes when washing a face with shampoo, do not rub the eyes. Forth, do not go to swim within a mouth. Fifth, please pay attention to eye sanitation, avoid long time to read, watch TV, etc. Hope these information can help you.