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In the presentation of this subject no reference is made to such mild cases of lachrymal stenosis as can be relieved by probing the canaliculi with small probes, followed by syringing, nor to cases dependent upon closure of the lower opening of the duct by pressure from the inferior turbinated body. The class to which I desire to call attention is that of true stenosis of the lachrymal duct, in which mild measures and nasal treatment are of no avail.
In order to pass a large probe down the lachrymal duct it is first necessary to slit a canaliculus. It is very important that the canaliculus of lesser function should be selected. The punctum and canaliculus of the lower lid unquestionably have greater function in draining the palpebral aperture of fluid than have the corresponding parts in the upper lid. Once the canaliculus is slit and its punctum destroyed, its
BLACK M. THE USE OF LARGE PROBES IN STENOSIS OF THE LACHRYMAL DUCT.. JAMA. 1898;XXXI(15):836-837. doi:10.1001/jama.1898.92450150022001j