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Length of intubation does not affect nasolacrimal duct function in pediatric cases

Ophthal Plast Reconstr Surg. 2010;26(2):103-105.

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There were no significant differences in success rates of intubation for congenital nasolacrimal duct obstruction based on time of tube removal, a study found.

"Six months after tube removal, the success rate was 43 of 48 (89.6%) in group 1 and 43 of 47 (91.5%) in group 2," the study authors said.

The prospective randomized study looked at 145 eyes of children who were between 15 and 30 months of age. Subjects were treated for congenital nasolacrimal duct obstruction with silicone stents. The fluorescein dye disappearance test was used to evaluate for drainage function.

At 2 months, the tubes were removed from children in group 1 (48 eyes); at 5 months, the tubes were removed from children in group 2 (47 eyes). The study excluded 50 eyes due to incomplete follow-up.

Full resolution of symptoms occurred in 33 of 48 eyes in group 1 and 33 of 47 eyes in group 2 when the tube was removed, according to the study.

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