Methods �� eigty - two normal eyes and 56 eyes with epiphora were investigated with digital subtraction dacryocystography and the dacryocystogram were studied
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Results �� lacrimal drainage system imaging by the digital subtraction dacryocystography provided reliable and accurate demonstration of lacrimal duct obstruction
3.
Conclusion �� 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