Assertion: nasolacrimal duct | /r/CapableOf | probe through 36 months of age.16 robb
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text: A prospective observational study of primary nasolacrimal duct probing in infants 6 to 60 months of age by the Pediatric Eye Disease Investigator Group showed an overall success rate of 78% with no decline in the efficacy of simple nasolacrimal duct probing through 36 months of age.16 Robb has reported > 90% success rates with initial probing beyond 36 months of age.17