Cov tsom iav tshwj xeeb yog tsim los kom tsis txhob muaj kev puas tsuaj rau lub qhov muag los ntawm lwm yam hauv qee qhov chaw ua haujlwm tshwj xeeb. Muaj qee qhov kev ncua deb ntawm lub iav tsom iav thiab lub ntsej muag. Nyob rau hauv qhov kev ncua deb no, lwm yam tsom iav tiv thaiv xws li tsom iav myopia thiab vuam tsom iav tuaj yeem hnav, lossis lawv tuaj yeem siv ib leeg. Cov khoom siv looj tsom iav uas tau xaiv yuav tsum dhau qhov kev tshuaj ntsuam xyuas hauv tebchaws thiab ua tau raws li nws cov qauv ua ntej lawv tuaj yeem siv tau. Qhov loj thiab qauv ntawm cov tsom iav yuav tsum yog qhov tsim nyog raws li qhov ua tau rau lub ntsej muag ntawm tus neeg siv.
1. Thaum siv cov tsom iav, thov xyuam xim rau kev siv cov neeg ua haujlwm tshwj xeeb. Nws yog txwv tsis pub pauv lawv los tiv thaiv kev kis kab mob ntawm qhov muag thiab kev raug mob vim qhov loj ntawm cov tsom iav.
2. Lub lens resin tuaj yeem tawg los ntawm kev cuam tshuam zoo, thiab nws yooj yim ua rau lub qhov muag thiab lub ntsej muag puas. Nws raug nquahu kom tsis txhob siv nws thaum lub sijhawm ua haujlwm hnyav.
3. Yog tias cov tsom iav siv tau ntev los yog siv tsis raug, cov lo ntsiab muag yuav ntxhib thiab puas. Cov lo ntsiab muag khawb yuav cuam tshuam rau tus neeg hnav' txoj kab pom. Yog tias lawv ua tsis tau raws li cov qauv kev nyab xeeb, lawv yuav tsum tau hloov raws sijhawm.
4. Nws yog txwv tsis pub nias lub tsom iav, thiab kom lawv nyob deb ntawm cov khoom siv ntau li ntau tau kom tsis txhob muaj kev puas tsuaj rau lub lens.
5. Thaum cov lo ntsiab muag muaj hws los yog lwm yam stains, nws raug nquahu kom yaug lawv nrog dej huv tam sim ntawd, thiab tom qab ntawd siv cov ntaub so ntswg los nqus cov dej noo, thiab tom qab ntawd qhuav lawv nrog cov ntaub iav tshwj xeeb. Thaum nws qias neeg heev, nws raug nquahu kom ntxuav nws nrog cov tshuaj pleev qis qis ua ntej, thiab tom qab ntawd yaug nrog dej thiab qhuav.
6. Thaum ntxuav cov tsom iav, koj yuav tsum tau siv cov ntaub so ntswg los ntxuav nws, thiab muab tso rau hauv lub hnab looj tsom iav lossis qhov chaw nyab xeeb.
7. Cov khoom siv tiv thaiv qhov muag yuav tsum tau siv thiab khaws cia raws li cov khoom lag luam' phau ntawv qhia. Tom qab siv rau hauv qee qhov chaw ua haujlwm tshuaj txau, yuav tsum tau tu thiab tu raws sijhawm, thiab hloov raws sijhawm yog tias tsim nyog.
8. Cov lim thiab tiv thaiv zaj duab xis ntawm lub vuam tsom iav yuav tsum raug xaiv thiab hloov raws li qhov yuav tsum tau ua ntawm kev ua haujlwm tau teev tseg. Lub tshuab lim thiab kev tiv thaiv kev ua haujlwm ntawm lub vuam tshuab tsom iav yuav tsum tau kuaj xyuas thiab hloov lub sijhawm thaum lub sijhawm ua haujlwm.
Cov saum toj no yog cov lus qhia txog kev ceev faj rau kev siv cov tsom iav. Kuv vam tias nws yuav pab tau koj kom nkag siab txog cov tsom iav. Tsis txhob saib ncaj qha rau ntawm lub hnub lossis lub teeb muaj zog nrog cov tsom iav, txwv tsis pub nws yuav ua rau koj lub qhov muag raug mob. Nws raug nquahu kom tsis txhob siv cov iav tsom iav nrog khawb, stains, tawg, thiab lwm yam, txwv tsis pub nws yuav ua rau pom tsis meej vim tawg tawg thiab ua rau tsis pom kev.
