8 , 13 - 17 Our study showed a significant trend of decreasing success rates with increasing age: 100%, 94%, 84.4%, 83.3%, 61.5% and 33.3% at 6, 12, 18, 24, 36 and 48 months of age, respectively which is consistent with other studies. 17 , 18 Kashkouli et al 12 concluded that older children are more likely to have complicated, non-membranous obstructions that might reduce the cure rate.
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Success rate of probing for congenital nasolacrimal duct obstruction at various ages.
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