SPH CYL thiab axis hauv daim ntawv tshuaj qhov muag yog dab tsi?
SPH CYL thiab axis hauv daim ntawv tshuaj qhov muag yog dab tsi?

Video: SPH CYL thiab axis hauv daim ntawv tshuaj qhov muag yog dab tsi?

Video: SPH CYL thiab axis hauv daim ntawv tshuaj qhov muag yog dab tsi?
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Common Rx Acronyms

OS = Oculus Sinister hais txog sab laug qhov muag . SPH = Sphere kho qhov ze lossis pom deb pom kev . CYL = Lub tog raj kheej ua ke nrog Axis kho astigmatism . PD = Menyuam Nyob Qhov Twg yog ntsuas qhov nrug ntawm cov tub kawm ntawv

Hauv qhov no, Cyl ntawm qhov muag tshuaj yog dab tsi?

Lub sij hawm " kheej kheej " yog qhov tseem ceeb ntawm qhov kev kho kom raug uas yuav tsum tau kho koj qhov ze lossis kev pom deb. Lub tog raj kheej ( CYL ): Tus lej qhia tias lub lens xav tau los kho qhov muag pom hauv koj lub qhov muag qhov muag.

Ib tug kuj yuav nug, SPH CYL axis yog dab tsi? OS (oculus sinistrum) yog hais txog koj qhov muag sab laug. Cov SPH (Sphere) lub thawv qhia qhov ntsuas ntawm qhov pom ntev npaum li cas (hyperopic) lossis pom luv luv (myopic) koj. Yog hais tias koj yog shortsighted, lub SPH tus nqi yuav muaj rho tawm (-) kos npe ua ntej nws yog tias koj pom ntev, tus SPH tus nqi yuav muaj qhov ntxiv (+) kos npe ua ntej nws.

Yooj yim li ntawd, Dab tsi yog Sphere thiab Lub tog raj kheej hauv qhov muag tshuaj?

Lub sij hawm " kheej kheej "txhais tau hais tias qhov kev kho rau qhov muag pom kev deb los yog qhov muag pom kev yog" kheej kheej , "los yog equalin tag nrho cov meridians ntawm lub qhov muag . Lub tog raj kheej ( CYL ) Qhov no qhia tias lub lens hwj chim rau astigmatism. Lub tog raj kheej lub zog ib txwm ua raws li kheej kheej lub zog nyob rau hauv aneeglass daim ntawv yuav tshuaj.

Puas yog cyl thiab axis hloov?

Thaum lub axis ntawm hloov pauv , nws tsuas yog txhais tau tias cov duab pem hauv ntej ntawm koj lub qhov muag muaj hloov . Asmall hloov hauv daim duab no tau feem ntau muab loj dua hloov hauv axis , yog li no tsis muaj dab tsi yuav txhawj txog, muab koj ob lub qhov muag noj qab nyob zoo.

Pom zoo: