title: New lacrimal cannula for probing and irrigation in the tearing patient.
abstract: Katena cannula K7-3016 (Katena Products, Inc, Denville, NJ) is a 23-gauge cannula that features an end-opening port for direct irrigation and a tapered tip for ease of entry into an undilated punctum. The 13-mm length makes it ideal to probe as well as irrigate the proximal lacrimal system. Katena cannula K7-3016 eliminates the need for punctal dilation and placement of Bowman probes to dilate the punctum and measure canalicular obstruction, respectively. The end-opening, direct irrigation design prevents misdiagnosis in the setting of canalicular stenosis.
authors.affiliation: Author Affiliations: Department of Ophthalmology, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA. mburnsti@earthlink.net
authors.forename: Michael A
authors.initials: MA
authors.lastname: Burnstine
mesh_terms: D002404:Catheterization / Q000295:instrumentation*; D003608:Dacryocystorhinostomy / Q000295:instrumentation*; D015352:Dry Eye Syndromes / Q000175:diagnosis / Q000378:metabolism; D006801:Humans; D009301:Nasolacrimal Duct / Q000601:surgery*; D013666:Tears / Q000378:metabolism; D007507:Therapeutic Irrigation / Q000295:instrumentation*