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Yuav ua li cas koj nyeem ib daim ntawv tshuaj optometrist?
Yuav ua li cas koj nyeem ib daim ntawv tshuaj optometrist?

Video: Yuav ua li cas koj nyeem ib daim ntawv tshuaj optometrist?

Video: Yuav ua li cas koj nyeem ib daim ntawv tshuaj optometrist?
Video: XOV XWM 22/03/2022 italy nyiag xav khoom ua rog rau yukhee & suav lub dav hlau poob neeg tuag coob 2024, Lub Xya hli ntuj
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Common Rx Acronyms

  1. OD = Oculus Dexter hais txog txoj cai qhov muag .
  2. OS = Oculus Sinister hais txog sab laug qhov muag .
  3. SPH = Sphere kho qhov muag tsis pom kev los yog pom kev deb.
  4. CYL = Lub tog raj kheej ua ke nrog Axis kho astigmatism .
  5. PD = Pupillary Distance yog qhov ntsuas qhov nrug ntawm cov tub kawm ntawv.

Ib yam li ntawd, nws raug nug, ua li cas koj nyeem daim ntawv tshuaj kho qhov muag?

Thaum koj saib koj daim ntawv yuav tshuaj rau tsom iav , koj yuav pom cov lej teev tseg hauv qab cov npe ntawm OS thiab OD. Lawv yog Latin abbreviations: OS (oculus sinister) txhais tau tias sab laug qhov muag thiab OD (oculus dextrus) txhais tau tias yog lub qhov muag sab xis. Qee zaum, koj yuav pom cov cim rau OU, uas txhais tau tias qee yam cuam tshuam nrog ob lub qhov muag.

Tsis tas li ntawd, yog 1.25 qhov muag tshuaj tsis zoo? Nov yog ob qho piv txwv: Yog tias koj daim ntawv yuav tshuaj nyeem + 1.25 , koj me ntsis farsighted. Yog koj daim ntawv yuav tshuaj nyeem -5, koj yog qhov pom tseeb. Kab tom ntej no yuav yog "C" lossis "lub tog raj kheej," thiab nws tau siv los piav txog astigmatism, uas txhais tau tias koj qhov muag tsis zoo tag nrho (zoo li neeg feem coob!).

Yog li ntawd, tus lej ntawm cov tshuaj kho qhov muag txhais li cas?

Thawj tus lej yog hu ua 'spherical tus lej ', thiab qhov no yuav qhia seb koj yog qhov muag pom luv (-) lossis qhov muag pom ntev (+) hauv txhua qhov qhov muag . Ib siab dua tus lej txhais tau tias muaj zog dua daim ntawv yuav tshuaj . Qhov thib peb tus lej yog 'axis tus lej ', qho yuav nyob nruab nrab ntawm 1 thiab 180. Lub axis tus lej qhia qhov chaw ntawm lub tog raj kheej.

Daim ntawv yuav qhov muag tsis zoo yog dab tsi?

Nws yuav raug sau ua ib qho ntxiv lossis qhov rho tawm, tab sis qhov ntawd tsis ua rau muaj qhov sib txawv li cas phem cov daim ntawv yuav tshuaj yog. Tus lej siab dua tom qab ntxiv lossis rho tawm, qhov ua rau astigmatism hnyav dua. 0.00 txog 1.00: me ntsis astigmatism. 1.00 txog 3.00: astigmatism nruab nrab. siab tshaj 3.00: astigmatism hnyav.

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