Vdt refraction yog dab tsi?

Cov txheej txheem:

Vdt refraction yog dab tsi?
Vdt refraction yog dab tsi?
Anonim

Ib qho kev ntsuas qhov cuam tshuam feem ntau yog muab los ua ib feem ntawm kev kuaj qhov muag niaj hnub. Nws kuj tseem yuav raug hu ua qhov kev ntsuam xyuas pom. Qhov kev sim no qhia rau koj tus kws kho qhov muag raws nraim li cov tshuaj koj xav tau nyob rau hauv koj lub tsom iav lossis qhov muag lo ntsiab muag. … Qhov yuam kev refractive txhais tau tias tias lub teeb tsis khoov kom zoo thaum nws hla lub qhov muag ntawm koj lub qhov muag.

Puas EyeMed them rau qhov cuam tshuam?

Ntau tus neeg them nyiaj kho mob tsis them rau qhov tsis txaus ntseeg vim tias lawv niaj hnub ua haujlwm, tab sis EyeMed ib txwm them rau cov kev cuam tshuam no raws li tus neeg mobcov txiaj ntsig kev kuaj mob ib txwm muaj thaum thov kev kho mob tau sib koom ua ke. Qhov no hloov thaum lub Kaum Ib Hlis; EyeMed tsis npog refraction nkaus xwb COBs.

Phoropter ua li cas?

A phoropter yog siv los txiav txim siab "refraction"- raws nraim li cas lub lens yuav tsum zoo li tus thiab nkhaus los kho koj lub zeem muag mus rau lub xeev ib txwm, tsis muaj dab tsi ntxiv. Phoropters yog cov ntsiab lus txawm li cas los xij, raws li koj qhov kev xav pom thiab cov lus teb rau koj tus kws kho qhov muag cov lus nug.

Kev txiav txim siab ntawm lub xeev refractive yog dab tsi?

Kev txiav txim siab ntawm lub xeev refractive. Kev txiav txim siab ntawm lub xeev refractive yog qhov tsim nyog kom tau txais cov iavthiab suav nrog cov ntsiab lus ntawm lub lens hom (monofocal, bifocal, lwm yam), lub zog lub lens, axis, prism, absorptive factor, impact resistance thiab lwm yam.

Dab tsi yog qhov txawv ntawm qhov kev kuaj qhov muag thiab qhov muag tsis pom kev?

Kev kuaj qhov muag tsis pom kev, tseem hu ua qhov kev ntsuam xyuas pom lossis ib qho yooj yimrefraction, yog qhov kev sim siv los txiav txim siab koj qhov muag tshuaj. Nws yog feem ntau ua raws li ib feem ntawm kev ntsuam xyuas qhov muag. Yog tias koj hnav tsom iav lossis tiv tauj lossis yog tias koj puas tau kuaj pom koj qhov muag, koj tau kuaj qhov muag tsis pom kev.

Pom zoo: