Meniscus level indicator of obstruction.
Yuen
Kenneth S C
KS
Cheng
Arthur C K
AC
Chan
Wai-Man
WM
D003941:Diagnostic Techniques, Ophthalmological; D006801:Humans; D007767:Lacrimal Duct Obstruction / Q000175:diagnosis*; D009301:Nasolacrimal Duct / Q000473:pathology*; D013666:Tears / Q000737:chemistry*