Anatomically, tau txais lub plawv dhia yog ib yam mob uas qhib sab nraud ntawm lub lacrimal canaliculus, nyob rau hauv qhov ntswg ntawm qhov palpebral margin, yog nqaim lossis occluded. Kev ua tiav ntawm lub cev ntawm lub punctum sab nraud yog hu ua punctal agenesis.
Canalicular obstruction yog dab tsi?
Kev cuam tshuam canalicular feem ntau ua rau rov qab los ntawm cov kua dej ntshiab los ntawm qhov sib txawv punctum. Kev rov qab los ntawm cov kua dej nrog rau qee cov mucous los ntawm lwm qhov punctum qhia tias muaj qhov ua tiav ntawm nasolacrimal duct (NLD) obstruction.
Qhov muag stenosis yog dab tsi?
Punctal stenosis yog nqaim lossis occlusion ntawm sab nraud qhib ntawm lacrimal canaliculus, lub punctum . 1. Nws tuaj yeem kuaj tau thaum lub punctum tsawg dua 0.3 hli inch.
Dab tsi yog Involutional stenosis?
Involutional stenosis yog zaum feem ntau ua rau nasolacrimal duct obstruction rau cov neeg laus. Nws cuam tshuam rau poj niam ob zaug ntau dua li txiv neej.
Txoj kev 3-snip yog dab tsi?
Cov txheej txheem duab plaub 3-snip muaj2 ntsug incisions los ntawm phab ntsa tom qab ntawmlub punctum thiab ntsug canaliculus (ib qho nruab nrab thiab ib sab) ua raws li kab rov tav incision txuas lub qhov kawg ntawm txoj kab ntsug, ua rau lub cev txiav tawm ntawm cov ntaub so ntswg.
