Is a bacterial biofilm in the lacrimal sac the cause of chronic refractory dacryocystitis?–A pilot study
Purpose: A pilot study to identify bacterial biofilm in the lacrimal sacs of patients with chronic dacryocystitis, and in patients with epiphora but without discharge, using scanning electron microscopy. Methods: Five patients: two with nasolacrimal duct obstruction without dacryocystitis, and three with dacryocystitis refractory to antibiotics, underwent external dacryocystorhinostomy. One contro
