title: [Clinical diagnosis of lacrimal duct obstruction by digital subtraction dacryocystography].
abstract: OBJECTIVE
  To illustrate the value of digital subtraction dacryocystography in the diagnosis of lacrimal duct obstruction.
  
  
  METHODS
  Eighty-two normal eyes and 56 eyes with epiphora were investigated with digital subtraction dacryocystography and the dacryocystogram were studied.
  
  
  RESULTS
  Lacrimal drainage system imaging by the digital subtraction dacryocystography provided reliable and accurate demonstration of lacrimal duct obstruction.
  
  
  CONCLUSIONS
  Digital subtraction dacryocystography is a rapid, effective and noninvasive imaging technique, and it is helpful in the diagnosis, treatment and study of lacrimal duct obstruction.
authors.affiliation: Department of Ophthalmology, Second Xiangya Hospital, Central South University, Changsha 410011.
authors.forename: M Y
authors.initials: MY
authors.lastname: Xian
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Jiang
authors.forename: Z S
authors.initials: ZS
authors.lastname: Zhang
mesh_terms: D000293:Adolescent; D000328:Adult; D005260:Female; D006801:Humans; D007765:Lacrimal Apparatus / Q000000981:diagnostic imaging*; D007767:Lacrimal Duct Obstruction / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D011856:Radiographic Image Enhancement