Hauv kev yuav khoom, nws yog ib qho tsim nyog yuav tsum tau soj ntsuam cov xim ntawm cov yeeb nkab tooj liab, thiab ua cov xim sib txawv raws li hom tooj liab yeeb nkab yuav. Zoo li tooj liab raj, liab tooj liab ntawm cov xim yog zoo tooj liab. Thiab tooj dag raj. Feem ntau cov sib dua yuav zoo dua. Qee cov tooj liab tsis zoo vim yog cov impurities sab hauv, nrog khoov ntawm tes tuaj yeem tawg ua ob daim, yog tias muaj cov impurities dub hauv tsis yuav.
Kov cov phab ntsa sab hauv ntawm cov yeeb nkab tooj liab nrog koj txhais tes kom pom tias nws du thiab huv si, thiab saib seb puas muaj cov teeb meem xws li trachoma, oxidation, thiab rupture. Yog tias koj tsis xis nyob, koj tuaj yeem siv cov khoom ntse los txhuam cov yeeb nkab tooj liab. Feem ntau, cov kav dej tooj liab zoo yog ua tiav nrog cov tooj liab ntshiab, thiab yuav muaj kev nthuav dav zoo dua, yog li cov kav dej zoo tooj liab yuav muaj kab sib sib zog nqus. Tom qab cov yeeb nkab tooj liab raug khawb sab hauv, yog tias nws zoo ib yam li cov phab ntsa sab nrauv, nws qhia tau hais tias tag nrho cov yeeb nkab tooj liab yog qhov zoo. Txawm li cas los xij, yog tias xim lossis lwm yam sib txawv, nws yuav muaj qee yam khoom xws li hlau ntxiv rau nws.
Feem ntau ua tiav cov yeeb nkab tooj liab, feem ntau muab faib ua lub xeev nyuaj, lub xeev ib nrab, lub xeev mos peb, cov ntaub ntawv sib txawv ntawm kev hloov pauv kuj txawv, feem ntau tuaj yeem txiav txim siab los ntawm kev khoov tooj liab yeeb nkab, cov yeeb nkab zoo tooj liab yog yooj yim heev rau khoov, tab sis yog tias nws yog qhov nyuaj rau khoov lossis khoov tom qab yuav muaj cov kab nrib pleb, qhia tias qhov zoo ntawm cov yeeb nkab tooj liab tsis zoo heev.
