Cannula dacryocystorhinostomy: a simple, innovative and cost-effective method of lacrimal surgery. 
To compare our innovative, cost-effective method of lacrimal surgery with other methods.  A prospective cohort study.  The study included 80 eyes of 80 consecutive patients who presented to our clinic between January 2009 and December 2011.  The patients underwent surgery using a new technique with a specially designed cannula and were followed according to our protocol.  Patency on irrigation.  Of the 80 cases enrolled, the procedure was successful in 52.5 % with a mean follow-up of 247.2 days.  The success rate was significantly affected by the preoperative conditions (p = 0.001) and follow-up duration (p = 0.006).  This simple innovative technique was cost-effective and the results were comparable with those of other techniques.