Tus nqi qis ntawm tus kws kho qhov muag yog dab tsi?
Tus nqi qis ntawm tus kws kho qhov muag yog dab tsi?

Video: Tus nqi qis ntawm tus kws kho qhov muag yog dab tsi?

Video: Tus nqi qis ntawm tus kws kho qhov muag yog dab tsi?
Video: Rov hu kuv dab tsi by ntxawm thoj 2024, Lub Xya hli ntuj
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[1] Tsom iav - ib feem ntawm qhov kev kuaj mob thaum cov neeg mob raug nug kom saib los ntawm cov iav sib txawv thaum nyeem kab ntawv me me thiab tom qab ntawd nug tias lub lens twg zoo dua - yog qhov kev ntsuas siv los txiav txim seb yuav siv cov tshuaj yuav tsum tau rau tsom iav lossis tsom iav.

Hauv qhov hais txog qhov no, vim li cas thiaj tsis cuam tshuam los ntawm kev pov hwm?

A refraction yog qhov kev xeem ua los ntawm koj tus kws kho mob qhov muag txhawm rau txiav txim siab tias tsom iav puas yuav ua rau koj pom zoo dua. Piv txwv li, Medicare ua tsis npog refractions vim lawv txiav txim siab nws yog ib feem ntawm kev kuaj mob "niaj hnub" thiab Medicare tsis suav nrog feem ntau "txheej txheem" txheej txheem - tsuas yog txheej txheem cuam tshuam txog kev noj qab haus huv.

Zoo sib xws, dab tsi yog qhov cuam tshuam ntawm kws kho qhov muag? A refraction , tseem hu ua kev ntsuas qhov muag, tau muab ib txwm ua thaum lub sijhawm qhov muag xeem ntawv, thiab nws tau tsim los qhia rau koj kws kho mob yog tias koj xav tau daim iav tsom iav. Refractions txiav txim siab tias muaj ametropia, ua yuam kev hauv kev tsom mus rau lub teeb ci thaum lawv dhau los ntawm lub qhov muag thiab qhov muag ntawm qhov muag.

Qhov tseeb, tus nqi qis ntawm tus kws kho qhov muag yog dab tsi?

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Koj yuav ua qhov kev ntsuas qhov muag tsis pom kev li cas?

A refraction xeem yog yam kws kho mob siv kom tau koj daim ntawv tsom iav. Koj saib daim duab, feem ntau yog 20 feet deb, lossis hauv daim iav uas ua rau tej yam zoo li lawv nyob deb li 20 feet. Koj yuav saib los ntawm cov cuab yeej hu ua phoropter. Nws cia tus kws kho mob txav lo ntsiab muag ntawm lub zog sib txawv nyob rau ntawm koj xub ntiag qhov muag.

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