Muaj ntau hom iav tiv thaiv kev lag luam, nrog rau cov iav pov thawj plua plav, cov iav pov thawj pov thawj, cov iav pov thawj tshuaj thiab lub teeb hluav taws xob pov thawj tsom iav. Thawj peb hom iav zoo li iav tsis muaj xim, tab sis qhov tseeb, vim muaj kev tiv thaiv sib txawv, cov yam ntxwv ntawm lo ntsiab muag yog qhov txawv.
Qee cov neeg ua haujlwm koom nrog kev tsim khoom lag luam yuav tsum hnav tsom iav. Hnav cov tsom iav zoo li no tsis yog rau kev kho kom zoo nkauj thiab zam, tab sis tiv thaiv lawv ob lub qhov muag los ntawm qhov teeb meem. Yog li ntawd, cov iav zoo li no hu ua tsom iav kev nyab xeeb.
Cov neeg ua haujlwm koom nrog hauv kev siv hluav taws xob vuam, roj vuam, hlau ua thiab iav tshuab yuav tsum hnav cov iav tiv thaiv arc hluav taws xob. Txawm li cas los xij, lub lens xim ntawm anti arc hluav taws xob tsom iav yog qhov tsaus thiab lub teeb, uas yog tsim raws li cov kev xav tau sib txawv. Kev xaiv yuav tsum raug xaiv kom raug raws li qhov siv ntawm arc thaum ua haujlwm. Muaj zog arc teeb thiab tsaus xim; Lub teeb xim lo ntsiab muag yuav tsum tau xaiv, txwv tsis pub. Yog tias lub teeb arc muaj zog, hnav cov tsom iav tiv thaiv lub teeb, qee qhov hluav taws xob infrared yuav txhawb nqa thiab ua rau lub qhov muag puas los ntawm lub lens, thiab yuav raug kev txom nyem los ntawm kev ua haujlwm cataract nyob rau lub sijhawm ntev; Ntawm qhov tsis sib xws, yog tias koj hnav tsom iav tsaus nti ntev ntev vim lub teeb pom kev tsis muaj zog, koj lub zeem muag yuav raug txo kom tsawg.
Plua plav pov thawj tsom iav yog siv nyob rau hauv ib puag ncig plua plav, thiab qhov yuav tsum tau rau qhov ceev ntawm cov lo ntsiab muag dav dav tsis siab. Seb lub qhov muag daim npog qhov muag los yog hom lo ntsiab muag tiaj tus, lawv yog ua los ntawm cov iav dav dav. Cov iav tiv thaiv kev cuam tshuam yog siv los tiv thaiv cov khoom me me los ntawm kev ya los ntawm kev tsoo lub qhov muag. Lawv cov lo ntsiab muag yuav tsum muaj kev cuam tshuam resistant. Piv txwv li, cov neeg ua haujlwm tshuab dhos, sanders thiab stonemasons yuav tsum hnav tsom iav tiv thaiv. Yog tias cov neeg ua haujlwm no hnav cov tsom iav uas muaj plua plav dav dav, cov hlau xuab zeb thiab pob zeb ya tsom iav yuav tawg, thiab qhov muag yuav raug puas tsuaj ntau dua.
Cov lo ntsiab muag ntawm chemical resistant iav yog acid-puag thiab corrosion-resistant, uas lwm yam iav tsis muaj.