Characteristics and Success Rates of Same Day or Asynchronous Bilateral External Dacryocystorhinostomy

Purpose: To evaluate the characteristics of bilateral nasolacrimal duct obstruction (NLDO) carriers and success rates of same day (simultaneous) or asynchronous (different day) bilateral dacryocystorhinostomy (DCR). Methods: This retrospective study included patients with bilateral NLDO who underwent bilateral external DCR between January 2010 to August 2015 at the King Khaled Eye Specialist Hospital, Saudi Arabia. Postoperative success rate was considered as subjective perception of no tearing bilaterally or failure if unilateral or bilateral tearing persists after surgery. Data were statistically analyzed with P 

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