Abstract:  Objective Tostudytheeffectofwiretypelacrimalductdilatationcombinedwith
lacrimalductintubationoperation in treatment of children with refractory lacrimal duct
obstruction , andtoanalysizerelatedfactorsaffectingthecurerateinchildren'srefractory
lacrimalductobstruction.Methods Intreatmentofrefractorylacrimalductobstruction , 306
cases ( 426eyes ), theaveragedageof1yearsold , followed-upfor3-18monthswerecollected.
Thosepatientsweretreatedbysawtypelacrimalductexpansioncombinedwithlacrimalduct
intubationsurgeryinthedepartmentofophthalmologyofBaodingchildren'shospital.Analysis
theinfluence ofpatientageand preoperativetreatmenton curerate.Pearson correlation
coefficientwasusedforstatisticalanalysis.Results Intotalof306cases ( 426eyes ), 386eyes
werefittedwithcriterionofcure.Thetotalcureratewas90.6% ( 386 / 426 ) .Theagefactor : the
cureratein6~12monthsgroups , 12monthsto24monthsgroups , 24monthsto36months
groups , andmorethan36monthsgroups , thecureratewas96.6% (
112 / 116 ), 91.3%
(
168 /
184 ), 86.0% ( 74 / 86 ), 80.0% ( 32 / 40 )( r =-0. 960 , P =0.002 ) .Preoperativetreatmentfactors :
thecurerateinprobingoflacrimalpassageafterfailureofchildren , childrenwithpurelacrimal
ductintubationfailedafter2groupswere : 93.6% ( 322 / 344 ), 78.0% ( 64 / 82 )( P =0.004 ) . Conclusion Treatmenteffectinwiretypelacrimalductdilatationcombinedwithlacrimalduct
intubationoperationforchildrenwithrefractorylacrimalductobstructionwasobvious , andwith
highsecurity.Thecureratewasdecreased withtheincreaseofage.Sawtypelacrimalduct
dilatationcombined withlacrimalductintubationtreatmentsignificantlyimprovedtreatment
effectscomparetosimplelacrimalintubationforpostoperativeeffectofinchildren withthe
probingoflacrimalpassagefailure.

Key words: nasolacrimalduct , lacrimalductobstruction , children