3Bleyen I, Paridaens AD. Bicanalicular silicone in tubation in acquired partial nasolacrimal duct obstruction. Bull Soc Beige Ophthalmol 2008; 23(4) :309-310.
4Bleyen I, van den Bosch WA, Bockholts D, et al . Silicone intubation with or without balloon dacryocystopIasty in acquired partial nasolacrimal duct obstruction. Am J Ophthalmol 2007 ; 144 ( 5 ) : 776 -780.
6Kathuria SS, Howarth D, Hurwitz JJ, et al . An anatomic and histologic study of the caruncle. Ophthal Plast Reconstr Surg 1999 ; 15 (6) :407-411.
7Ostendorf M,Tost F. Imaging the lacrimal canaliculus with 20-MHz ultrasonography : a normal diagnosis ( Part 1 ). J Fr Ophthalmol 2003 ; 26 (10) : 1031-1034.