Cov naj npawb ntawm koj daim iav tsom iav hais txog qhov zoo ntawm koj ob lub qhov muag thiab lub zog ntawm koj lub zeem muag.Lawv tuaj yeem pab koj txheeb xyuas seb koj puas muaj nyob ze ze, farsightedness los yog astigmatism - thiab mus rau qib twg.
Yog tias koj paub tias yuav nrhiav dab tsi, koj tuaj yeem nkag siab txog cov lej thiab cov ntawv luv luv ntawm koj daim ntawv sau tshuaj.
OD vs OS: Ib qho rau txhua qhov muag
Cov kws kho qhov muag siv cov ntawv luv "OD" thiab "OS" los qhia koj qhov muag sab xis thiab sab laug.
● OD yog koj lub qhov muag sab xis.OD yog luv rau oculus dexter, lo lus Latin rau "qhov muag sab xis."
● OS yog koj qhov muag sab laug.OS luv luv rau oculus sinister, Latin rau "sab laug qhov muag."
Koj cov tshuaj tsis pom kev tuaj yeem muaj kab ntawv sau tias "OU."Qhov no yog lub abbreviation rauoculus ub, uas txhais tau tias "ob lub qhov muag" hauv Latin.Cov ntsiab lus luv luv no feem ntau ntawm cov tshuaj rau cov tsom iav, cov tshuaj tiv thaiv kab mob thiab cov tshuaj qhov muag, tab sis qee cov kws kho mob thiab cov chaw kho mob tau xaiv los kho lawv cov tshuaj kho qhov muag los ntawm kev sivRE (qhov muag sab xis)thiabLE (sab laug qhov muag)tsis yog OD thiab OS.
Sphere (SPH)
Sphere qhia tias lub hwj chim ntawm lub lens raug kho kom pom qhov ze lossis qhov pom deb.Lens zog yog ntsuas hauv diopters (D).
● Yog tias tus lej hauv qab no tuaj nrog lub cim kos (–),koj nyob ze ze.
● Yog tias tus lej hauv qab no muaj lub cim ntxiv (+),koj yog farsighted.
Lub tog raj kheej (CYL)
Lub tog raj kheej qhia txog tus nqi ntawm lub lens lub zog xav tau rauastigmatism.Nws ib txwm ua raws lub zog kheej kheej ntawm daim ntawv tshuaj tsom iav.
Tus lej nyob rau hauv kem lub tog raj kheej tej zaum yuav muaj ib tug rho tawm kos npe rau (rau kho qhov ze astigmatism) los yog ib tug ntxiv kos npe rau (rau farsighted astigmatism).
Yog tias tsis muaj dab tsi tshwm sim hauv kab ntawv no, koj tsis muaj astigmatism, lossis koj qib ntawm astigmatism tsawg heev uas nws tsis tas yuav kho.
Axis
Axis piav qhia lub lens meridian uas tsis muaj lub tog raj kheej lub zog rauyog astigmatism.
Yog hais tias lub tsom iav qhov muag muaj xws li lub tog raj kheej lub zog, nws kuj yuav tsum tau suav nrog tus nqi axis, uas ua raws li lub tog raj kheej lub zog.
Lub axis yog txhais nrog tus lej ntawm 1 txog 180.
● Tus naj npawb 90 sib raug rau qhov ntsug meridian ntawm lub qhov muag.
● Tus naj npawb 180 sib raug rau kab rov tav meridian ntawm lub qhov muag.
Ntxiv
"Ntxiv" yog qhovntxiv magnifying zogthov mus rau hauv qab ntawm multifocal lo ntsiab muag los kho presbyopia - lub ntuj farsightedness uas tshwm sim nrog hnub nyoog.
Tus lej tshwm sim hauv nqe lus no ntawm cov tshuaj yog ib txwm muaj "ntxiv" lub zog, txawm tias koj tsis pom ib qho ntxiv.Feem ntau, nws yuav nyob ntawm +0.75 txog +3.00 D thiab yuav yog tib lub zog rau ob lub qhov muag.
Prism
Qhov no yog tus nqi ntawm lub hwj chim prismatic, ntsuas nyob rau hauv prism diopters ("pd" los yog ib daim duab peb sab thaum sau freehand), sau los them nyiaj raukho qhov muagteeb meem.
Tsuas yog ib feem me me ntawm cov tshuaj tsom iav muaj xws li kev ntsuas prism.
Thaum tam sim no, tus nqi ntawm prism yog qhia nyob rau hauv metric los yog fractional English units (0.5 los yog ½, piv txwv li), thiab cov kev taw qhia ntawm lub prism yog qhia los ntawm kev ceeb toom tus txheeb ze txoj hauj lwm ntawm nws "puag" (thickest edge).
Plaub lub ntsiab lus yog siv rau kev taw qhia prism: BU = puag;BD = base down;BI = puag hauv (mus rau tus neeg hnav lub qhov ntswg);BO = puag tawm (mus rau lub pob ntseg).
Yog tias koj muaj kev txaus siab ntxiv lossis xav tau cov ntaub ntawv tshaj lij ntawm cov khoom siv kho qhov muag, thov nkag mus rau peb nplooj ntawv dhau loshttps://www.universeoptical.com/stock-lens/kom tau txais kev pab ntxiv.