METHODS: Totally 92 cases(92 eyes)of chronic sinusitis with chronic dacryocystitis in our hospital from May 2016 to March 2019 were included in the prospective, single-blind study. According to Lund-Mackay score, the patients were divided into three groups: mild(22 cases), moderate(34 cases)and serious(36 cases). Each group was randomly divided into simultaneous operation group and phased operation group. We compared the operative effect and complications of simultaneous and phased operations.

RESULTS: In patients with mild and moderate chronic sinusitis combined with chronic dacryocystitis, there was no statistical difference in the efficiency and complications between simultaneous and phased operations(P>0.05). In patients with severe chronic sinusitis combined with chronic dacryocystitis, the efficiency of phased operations was higher than that of the simultaneous surgery(94% vs 61%, P<0.05), and the complications were lower than that of the simultaneous surgery(P<0.05).

CONCLUSION: According to Lund-Mackay score, patients with mild to moderate chronic sinusitis and chronic dacryocystitis are advised to undergo simultaneous surgery, while patients with severe rhinosinusitis are advised to undergo phased surgery.