DCov iav tsom iav efocus Incorporated Multiple Segments tau muab lub npe vim muaj ntau lub iav me me uas pom tau rau lub qhov muag liab qab ntawm cov ces kaum tshwj xeeb ntawm lub lens nto, uas tau faib ua ib lub duab, yog li ntawd lub npe. Defocus Incorporated Multiple Segments Lenses yog ib hom iav tsom iav tiv thaiv thiab tswj myopia, uas muaj ob thaj chaw. Ib qho yog thaj chaw kho qhov muag nruab nrab siv los kho qhov yuam kev refractive (myopia, farsightedness thiab astigmatism), thiab lwm qhov yog qhov chaw nruab nrab txuas mus rau periphery ntawm lub lens. Ntau thaj chaw myopic defocus zones. Thaum tus neeg hnav saib cov khoom ntawm qhov deb sib txawv, defocus incorporated ntau ntu iav tsom iav tuaj yeem muab kev pom tseeb thiab myopia defocus tib lub sijhawm, thiab tuaj yeem tiv thaiv thiab tswj kev loj hlob ntawm myopia thaum kho qhov muag.
Lub hauv paus ntsiab lus yog siv cov txheej txheem tawm tswv yim ntuj ntawm lub qhov muag - qhov tshwm sim ntawm emmetropization, yog li ntawd qhov muag pom, kev loj hlob ntawm qhov muag thiab daim duab retinal ntawm lub qhov muag nyob ze rau qhov pom ntawm lub qhov muag emmetropic.
Tam sim no, cov tub ntxhais hluas uas muaj teeb meem myopia feem ntau yog axial myopia, uas yog los ntawm kev loj hlob ntawm lub qhov muag axis. Vim yog qhov ntev ntawm lub qhov muag, qhov chaw ntawm daim duab raug tso tawm rau pem hauv ntej ntawm retina. Thaum kho cov iav myopia ib txwm muaj, qhov kev kho kom pom tseeb tshaj plaws tsuas yog tsom rau qhov pom kev hauv nruab nrab xwb, thiab lub lens tsim nws tus kheej maj mam nce lossis nce qib ntawm thaj chaw sab nraum qhov kaj hauv nruab nrab. Tom qab kho, tib yam khoom tuaj yeem tso tawm rau ntawm fovea ntawm macula yam tsis muaj teeb meem, ua kom pom kev meej. Txawm li cas los xij, cov khoom uas peripheral retina tau txais tsis ncaj qha rau ntawm retina, tab sis raug thaij duab rau sab tom qab ntawm retina. Qhov no kuj tseem yuav ua rau qhov peb xav tias hyperopia defocusing, uas tam sim no lees paub tias yog ib qho ntawm cov laj thawj tseem ceeb ntawm myopia tsim thiab tob zuj zus los ntawm cov kws tshawb fawb. Qhov no yog vim tias hyperopia defocusing rau sab tom qab ntawm retina txhawb nqa kev loj hlob ntawm lub qhov muag axis mus rau sab tom qab, ua rau axial loj hlob thiab tob zuj zus ntawm myopia.
Lub lens me me hauv thaj chaw defocus yog tsim tshwj xeeb kom muaj qib sib txawv ntawm lub lens ib leeg hauv thaj chaw kho, ua rau daim duab poob rau pem hauv ntej ntawm retina, ua rau myopia defocus thiab muab lub teeb liab rau lub qhov muag axis mus tom ntej, ua tiav cov txiaj ntsig ntawm kev ncua myopia tob zuj zus.
Qhov Zoo:
1. Cov nyhuv tswj myopia yog qhov pom tseeb: qhov cuam tshuam qeeb rau kev loj hlob ntawm myopia yog siab txog li 59%, thiab cov nyhuv tswj hwm ntawm kev loj hlob axial yog siab txog li 60%.
2. Yooj yim rau kev sib txuas: Cov iav tsom iav ntau lub ntsiab lus yog ib hom iav tsom iav tshwj xeeb, thiab kev sib txuas yooj yim heev.
3. Kev nplij siab siab: cov iav tsom iav uas muaj ntau lub ntsiab lus myopia tsis muaj qhov chaw astigmatism thiab tsis kov lub qhov muag tib neeg. Tsis zoo li cov iav tsom iav, uas kov lub cornea, lawv yuav tsis ua rau tsis xis nyob.
4. Kev saib xyuas yooj yim: Piv nrog rau lwm cov lenses, xws li orthokeratology lenses, uas yuav tsum tau ntxuav tes thiab tua kab mob txhua zaus lawv raug tshem tawm thiab muab tso rau, thiab kev saib xyuas lens xav tau kev saib xyuas tshwj xeeb.
5. Qhov cuam tshuam ntawm kev ncua ntawm myopia yog siab txog li 59%, thiab qhov cuam tshuam tswj hwm ntawm kev loj hlob axial yog siab txog li 60%.
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Lub sijhawm tshaj tawm: Lub Kaum Hli-16-2023