![Trifocal lens txhais li cas? Trifocal lens txhais li cas?](https://i.answers-medical.com/preview/medical-health/14184041-what-does-trifocal-lens-mean-j.webp)
Video: Trifocal lens txhais li cas?
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2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Trifocals yog tsom iav nrog lo ntsiab muag uas muaj peb cheeb tsam uas kho rau kev ncua deb, nruab nrab (qhov ntev ntawm caj npab), thiab ze qhov muag. John Isaac Hawkins tau tsim lub trifocal lens hauv xyoo 1827. Trifocals feem ntau yog siv los ntawm cov neeg uas muaj presbyopia siab heev uas tau muab 2 diopters lossis ntau dua ntawm kev nyeem ntawv ntxiv.
Ib yam nkaus, qhov sib txawv ntawm trifocals thiab cov tsom iav zoo li cas?
Executive bifocal lens (tseem hu ua Franklin bifocal). Bifocals muaj ob lens hwj chim; trifocals muaj peb. Kev vam meej multifocal lo ntsiab muag maj mam hloov pauv lub zog los ntawm ib nrab sab saum toj ntawm lens mus rau hauv qab, thiab yog li muaj ntau lens hwj chim.
trifocal lens zoo li cas? Dab tsi yog Trifocal Lenses . Trifocal lo ntsiab muag saib thiab ua zoo sib xws bifocal cov lo ntsiab muag , nrog thaj chaw saib ntxiv los pab kho qhov pom kev hauv thaj tsam nruab nrab, thiab ob txoj kab pom uas qhov chaw saib pom hloov pauv. Cov trifocal tus neeg hnav nyiam qhov pom kev zoo dua nyob ze, nruab nrab, thiab nyob deb.
Kuj Paub, lub hom phiaj ntawm lub lens trifocal yog dab tsi?
Trifocal lo ntsiab muag muab kev kho rau ze thiab deb tsis pom kev, tab sis kuj pab kom ib tug neeg pom kom meej nyob rau theem nrab (txog qhov ntev ntawm koj txhais caj npab). Trifocals pab kho thaj tsam nruab nrab los ntawm kev nthuav tawm qhov thib ob me me lens ntu ncaj qha rau saum thaj chaw uas siv los kho qhov pom kev ze.
Koj siv cov iav trifocal li cas?
Trifocal lo ntsiab muag suav nrog ntu ntu zoo li daim ntawv txuas ntxiv ncaj qha rau ntu ntu ze. Lub zog ntawm ntu no yog siv los saib cov khoom hauv koj thaj tsam tam sim ntawm lub zeem muag, lossis kwv yees li 18-24 ntiv deb. Tus so ntawm lub lens yog siv rau kev pom kev deb.
Pom zoo:
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Los ntawm Wikipedia, phau ntawv txhais lus pub dawb. Cov lus kho mob yog cov lus siv los piav qhia meej txog tib neeg lub cev suav nrog nws cov khoom, txheej txheem, cov xwm txheej cuam tshuam rau nws, thiab cov txheej txheem ua rau nws. Cov lus siv kho mob tau siv hauv thaj chaw tshuaj
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Lawv kuj muaj kev pheej hmoo ntau ntxiv ntawm kev txhim kho kab mob plawv thiab cuam tshuam txog teeb meem nyob rau 13 xyoos tom ntej. Qhov sib txawv loj hauv kev ntsuas ntshav siab ntawm koj txhais caj npab tuaj yeem yog ib qho cim ntawm teeb meem kev noj qab haus huv, xws li: Cov hlab ntshav txhaws hauv koj txhais caj npab (kab mob hlab ntsha hauv nruab nrog cev) Kab mob hauv lub raum
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Lub ntsiab lus & piav qhia rau Hairy Feet phau ntawv txhais lus! Yog tias muaj dab tsi tshwm sim rau ib txhais taw hauv kev npau suav, nws yuav cuam tshuam txog nws cov nyiaj txiag sawv, ua haujlwm, ua haujlwm hnyav, nws tus thawj coj lossis nws cov neeg sawv cev. Yog tias ib tus pom nws txhais taw taw rau saum ntuj hauv npau suav, nws tuaj yeem qhia txog kev tuag ntawm nws tus menyuam
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Niaj hnub no, koj tuaj yeem xaiv los ntawm ntau qhov bifocal thiab trifocal lens tsim, nyob ntawm koj lub hnub nyoog thiab kev xav tau. Muaj txawm tias tshwj xeeb bifocals thiab trifocals tsim rau tsom iav rau kev ua haujlwm hauv computer thiab lwm yam haujlwm uas tshwm sim ntawm qhov nruab nrab