Kev laus ntawm cov pejxeem tau dhau los ua ib qho tshwm sim hauv ntiaj teb. Niaj hnub no, cov teeb meem kev noj qab haus huv ntawm cov neeg laus raug mob hnyav los ntawm txhua tus. Ntawm lawv, cov teeb meem pom kev noj qab haus huv ntawm cov neeg laus kuj tseem xav tau txhua tus neeg saib xyuas thiab kev txhawj xeeb. Ntau tus neeg xav tias presbyopia tsuas yog tsis tuaj yeem pom cov lus nyob ze kom meej, yog li tsuas yog yuav ib khub ntawm cov iav presbyopic. Qhov tseeb, kev xaiv ntawm cov tsom iav nyeem ntawv yeej tsis yog "random". Nws yog ib qho tseem ceeb heev uas yuav tau ua tib zoo xaiv ob lub tsom iav nyeem ntawv uas haum rau koj.
Yuav Ua Li Cas Xaiv Ib Cov Khaub Ncaws Nyeem Ntawv
1.SINGLE VISION
Nws yog txoj hauv kev uas feem ntau siv los kho presbyopia. Feem ntau, nyob rau hauv lub hauv paus ntawm pom kom meej nyob rau hauv qhov kev ncua deb, ib tug tej yam npaum li cas ntawm zoo iav hwj chim yog ntxiv, thiaj li hais tias pom kom meej nyob rau hauv qhov kev ncua deb yuav pom tseeb nyob rau hauv lub ze.
Qhov zoo:Yooj yim, zoo ib yam lens luminosity nyob rau hauv lub tshav pob ntawm lub zeem muag, yooj yim rau hloov; kev lag luam thiab pheej yig.
Qhov tsis zoo:Rau qee tus neeg uas yuav tsum tau hnav tsom iav kom pom deb, kev ua haujlwm yog qhov nyuaj dua. Piv txwv li, cov neeg laus uas muaj qhov nruab nrab mus rau siab myopia feem ntau yuav tsum tau hnav ob lub tsom iav nrog qhov siab myopia thaum taug kev thiab saib TV; yog lawv nyeem phau ntawv lossis xov tooj ntawm tes, lawv yuav tsum hloov lawv. Hnav ob lub tsom iav presbyopic, coj lawv mus thiab tawm, kev ua haujlwm yog qhov nyuaj. Rau qhov xwm txheej zoo li no, puas muaj ob lub iav uas tuaj yeem daws qhov teeb meem ntawm kev pom deb thiab ze tib lub sijhawm? Yog, bifocals.
2. Bifocals
Nws hais txog kev ua haujlwm ntawm ob lub zog sib txawv ntawm tib lub tsom iav kom dhau los ua lub ntsej muag tsom iav nrog ob qhov chaw kho tib lub sijhawm.
Qhov zoo:Yooj yim, ib nrab sab sauv ntawm lub lens yog qhov pom kev deb, thiab ib nrab qis yog qhov ze ze ntawm qhov pom. Ib nkawm tsom iav daws qhov teeb meem ntawm kev pom nyob deb thiab ze, thiab zam kev tshem tawm thiab hnav ob lub tsom iav rov qab.
Qhov tsis zoo:Rau cov neeg laus uas muaj qib siab ntawm presbyopia, cov khoom nyob nruab nrab ntawm qhov deb kuj tseem yuav tsis meej; Cov nyhuv prism qis ua rau cov khoom zoo li "dhia" mus rau qhov chaw sab saud.
Piv nrog rau ib lub zeem muag ib leeg, lub lens bifocal tuaj yeem pom ob qho tib si deb thiab ze, tab sis nws tsis muaj kev pab me ntsis rau cov khoom hauv nruab nrab, yog li puas muaj cov iav uas pom tau deb, nruab nrab thiab ze, thiab pom tau meej ntawm txhua qhov deb? Yog, Progressive tsom iav.
3. Cov tsom iav loj
Nws hais txog kev hloov pauv hloov pauv ntawm suav tsis txheeb ntxiv tsom iav los ntawm sab saum toj mus rau hauv qab ntawm ib daim iav, muab cov neeg hnav nrog kev pom kev tsis tu ncua thiab pom tseeb los ntawm qhov deb mus rau ze, thiab tsis muaj qhov tshwj xeeb ntawm cov tsom iav nyob rau hauv cov nqe lus ntawm lub ntsej muag lens.
Qhov zoo:Yooj yim, sab saum toj ntawm lub lens yog thaj chaw pom kev deb, thiab hauv qab yog thaj chaw ze ze. Nws muaj qhov ntev thiab nqaim gradient cheeb tsam txuas rau ob, tso cai rau koj pom cov khoom ntawm qhov nruab nrab. Ob sab ntawm lub gradient cheeb tsam yog peripheral cheeb tsam. Ib nkawm tsom iav ib txhij daws qhov pom kev xav tau ntawm qhov deb, nruab nrab thiab ze ze, ua tiav "kev hloov pauv ceev ceev".
Qhov tsis zoo:Piv nrog rau ib daim iav tsis pom kev, nws yuav siv sij hawm ntev dua los kawm thiab hloov kho.
Yog li, nws puas yog "ib zaug thiab rau tag nrho" xaiv ib nkawm tsom iav nyeem ntawv?
Tsis yog nws. Qib ntawm presbyopia yuav nce ntxiv nrog rau hnub nyoog, feem ntau nce ntawm tus nqi ntawm 50 degrees txhua 5 xyoos. Cov kev tshawb fawb tau pom tias rau cov neeg uas tsis muaj diopter, qhov degree ntawm presbyopia thaum muaj hnub nyoog 45 feem ntau yog 100 degrees, thiab nws nce mus rau 200 degrees thaum muaj hnub nyoog 55. Thaum muaj hnub nyoog 60, qhov degree yuav nce mus rau 250 degrees mus rau 300 degrees. Qhov degree ntawm presbyopia feem ntau tsis tob zuj zus. Tab sis rau qhov xwm txheej tshwj xeeb, nws raug nquahu kom mus rau lub tsev kho mob qhov muag rau kev kho mob optometry ua ntej xaj tsom iav
Yog tias koj xav paub ntau ntxiv txog tsom iav zam tiam sis thiab kev sib tham hauv kev lag luam, thov mus saib peb lub vev xaib thiab tiv tauj peb txhua lub sijhawm.
Post lub sij hawm: Lub Xya hli ntuj-28-2023