![Dab tsi yog 3 tus lej ntawm kuv lub tsom iav? Dab tsi yog 3 tus lej ntawm kuv lub tsom iav?](https://i.answers-medical.com/preview/medical-health/14055565-what-are-the-3-numbers-on-my-glasses-j.webp)
Video: Dab tsi yog 3 tus lej ntawm kuv lub tsom iav?
![Video: Dab tsi yog 3 tus lej ntawm kuv lub tsom iav? Video: Dab tsi yog 3 tus lej ntawm kuv lub tsom iav?](https://i.ytimg.com/vi/vLuayz262c8/hqdefault.jpg)
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Cov ntawd peb tus lej txhais tau tias: thawj yog qhov dav ntawm txhua lub lens ntawm nws qhov dav tshaj plaws; qhov thib ob, qhov nrug nruab nrab ntawm cov iav (lub qhov ntswg txuas). Qhov thib peb yog qhov ntev ntawm lub tuam tsev, daim uas haum rau koj pob ntseg. Tag nrho cov kev ntsuas no yog nyob rau hauv millimeters.
Ua kom pom qhov no, 3 tus lej ntawm cov iav txhais li cas?
Txhua peb ntawm cov ntsuas no yog teev inmillimeters (mm). Piv txwv li, cia peb hais tias koj pom cov no peb tus lej Nyob rau sab hauv ntawm koj cov ncej: 48-19-140. Tus nab npawb thawj - qhov muag loj - sawv cev rau kab rov tav dav ntawm lo ntsiab muag.
Ib yam li ntawd, kuv yuav paub kuv lub iav Qhov Loj li cas? Kev ntsuas qhov tsom iav - Nrhiav Qhov Ncaj Ncees
- Lub lens txoj kab uas hla yog qhov dav ntawm lub lens (hauv mm), ntsuas los ntawm tus choj. Nws tuaj yeem yog qhov teeb meem ntawm tus kheej xaiv, tab sis nws kuj tau txiav txim siab los ntawm koj tus ncej style.
- Tus choj dav yog qhov sib txawv saum koj lub qhov ntswg ntawm lub lenses.
- Qhov ntev ntawm sab feem ntau yog ib qho ntawm peb tus qauv - 135, 140 lossis 145mm.
Tom qab ntawd, lo lus nug yog, cov lej ntawm kuv lub iav tsom iav txhais li cas?
Cov zauv hauv qab cov thav duab qhia txog SIZEMEASUREMENTS hauv millimeters (mm). LUB TSEV NUMBER (ex.54) = qhov dav ntawm lo ntsiab muag. LUB thib ob Zauv (ex.15) = qhov deb ntawm lo ntsiab muag. LUB thib peb NUMBER (ex.140) = the length of the tuam tsev caj npab suav nrog rau feem mus tom qab pob ntseg.
Puas yog koj tus PD sau rau ntawm koj lub tsom iav?
Pupillary Distance ( PD ) Tsis txhob txhawj yog koj daim ntawv yuav tshuaj tsom iav tsis suav nrog koj PD , peb tuaj yeem qhia koj li cas los ntsuas nws ntawm koj tus kheej. PD , lossis qhov kev kawm deb, hais txog cov nrug hauv millimeters nruab nrab cov nruab nrab ntawm ib tug me nyuam kawm ntawv rau cov chaw ntawm cov lwm yam. * Nco ntsoov tias cov nruab nrab PD yog nruab nrab ntawm 57 thiab 65 mm.
Pom zoo:
Kuv yuav tig kuv lub looj tsom iav ua iav li cas?
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Tsuas yog mus ntsib koj lub khw muag khoom kho mob hauv zos. Yog tias koj muaj tus ncej koj xav hloov dua siab tshiab, nqa nrog koj. Los yog cov khw feem ntau muaj ntau yam looj tsom iav los xaiv los ntawm. Thaum koj tau txiav txim siab qhia rau tus kws kho qhov muag koj xav tau cov tshuaj tsom iav tsom iav
Dab tsi yog tsom iav tsom iav?
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Kev tsom me me tshwj xeeb yog cov txheej txheem kev yees duab uas tsis nthuav dav uas tso cai rau koj kom pom kev thiab txheeb xyuas lub qhov muag qhov muag. Siv lub computer-pab morphometry, niaj hnub specular tsom tsom xam qhov loj me, cov duab thiab cov pejxeem ntawm cov endothelial cells
Kuv puas tuaj yeem muab kuv cov iav tsom iav los ua tsom iav?
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Yog, koj tuaj yeem ua tau. Koj cov tsom iav RX ib txwm tuaj yeem pleev xim rau ib qho xim uas koj xav tau thiab ua rau koj ib khub tsom iav tsom iav. Tsuas yog coj koj lub tsom iav mus rau lub khw muag khoom kho qhov muag hauv cheeb tsam thiab ua rau koj cov iav tsom iav. Nws yog qhov ua tau rau koj kom koj cov iav tsom iav tsis tu ncua
Vim li cas qhov sib txawv hauv qhov tsom iav tsom iav tseem ceeb heev?
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Qhov sib piv: Lub tshuab tsom me me yog ua kom lub ntiaj teb me me pom rau tib neeg qhov muag. Txhawm rau ua qhov no kom tiav, tib neeg lub qhov muag yuav tsum muaj peev xwm pom qhov txawv ntawm ib qho piv txwv los ntawm nws ib puag ncig. Qhov sib piv zoo dua, nws yooj yim dua yog pom qhov sib txawv hauv cov duab
Lub cev ua haujlwm ntawm lub tshuab tsom iav yog dab tsi?
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Lub cev raj (Lub taub hau): Lub cev raj txuas lub qhov muag mus rau lub hom phiaj tsom iav. Caj npab: Sab caj npab txuas lub cev lub cev mus rau lub hauv paus ntawm lub tshuab tsom iav. Kev hloov ntxhib: Nqa cov hnoos qeev mus rau qhov ua kom pom tseeb. Kev hloov kho kom raug: Ua kom zoo mloog qhov ua kom pom tseeb thiab nce qhov nthuav dav ntawm cov hnoos qeev