RESUMEN
Objective To observe the effect of laser and intubation applied in recurrent nasolacrimal duct-blok.Methods 116 cases of recurrent nasolacrimal duct-blok patients were selected and divided into the observation group and control group by random number table.Only laser was given in the control group,and intubation added in the observation group.All the cases were followed up more than 1 year,and the effects in both group were compared. Results There were 63 effective cases in the observation group,and efficacy rate was 83.33%.And 17 effective cases in the control group,efficacy rate was 41.56%.The efficacy rate in the observation group was higher than that in the control group (χ2 =31.915,P <0.05).There was no false passage in both groups after laser given.Conclusion The effect of laser combined with intubation was better than that of laser alone in recurrent nasolacrimal duct-blok treatment.It was valuable to refractory and recurrent nasolacrimal duct-blok treating.