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Abstract Objective：To explore the clinical effect of nasolacrimal duct open in the treatment of chronic dacryocystitis.Method：52 cases（ eyes） of chronic dacryocystitis were selected and divided into two groups，the observation group and control group，26 cases（eyes） in each group. The lacrimal sac contrast CT examination before operation were perfected. The observation group was underwent nasal endoscopic nasolacrimal duct open surgery and control group was underwent nasal endoscopic dacryocystorhinostomy.The therapeutic effect of two groups of patients were compared by preoperative and postoperative VAS score.Result：Before and after treatment， VAS score was statistically significant（P<0.05）；clinical total effective rate of observation group patients was obviously higher than that of control group， postoperative obstruction of the nasolacrimal duct and epiphora recurrence rate was lower than the control group，the differences were statistically significant （P<0.05）.Conclusion： Endoscopic nasal lacrimal duct open treatment of nasolacrimal duct obstruction type chronic dacryocystitis has good treatment effect， and the postoperative patients with nasolacrimal duct obstruction and low recurrence rate and epiphora improvement degree is high， is worth the clinical promotion.
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