2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Lub teeb peb tuaj yeem pom, ua los ntawm cov xim ntawm tus zaj sawv, tsuas yog ib feem me me ntawm electromagnetic spectrum. Lwm hom teeb muaj xws li xov tooj cua nthwv dej, microwaves, hluav taws xob infrared, ultraviolet rays, X-rays thiab gamma rays - tag nrho cov uas yog imperceptible rau tib neeg ob lub qhov muag.
Puas gamma rays pom tsis tau?
Gamma rays yog lub siab tshaj plaws-zog daim ntawv ntawm lub teeb nyob rau hauv lub cosmos. … Ntawm daim duab qhia chaw, lub teeb gamma-duab ci ci tshaj plaws yog pom nyob rau hauv cov xim daj thiab cov teeb ci gamma-duab teeb pom kev yog xim liab, xiav, thiab dub. Cov no yog xim cuav, tab sis; gamma-rays tsis pom.
Yim hluav taws xob pom dab tsi rau tib neeg lub qhov muag?
Lub pom lub teeb spectrum yog ntu ntawm electromagnetic spectrum uas tib neeg lub qhov muag pom tau. Qhov yooj yim dua, qhov ntau ntawm wavelengths no hu ua pom lub teeb. Feem ntau, tib neeg lub qhov muag tuaj yeem ntes wavelengths ntawm 380 txog 700 nanometers.
peb ob lub qhov muag pom tau pes tsawg?
Nyob hauv lub neej nruab nrab, koj ob lub qhov muag yuav pom 24 lab cov duab sib txawv. Tib neeg lub qhov muag tsuas pom peb xim: liab, xiav thiab ntsuab. Tag nrho lwm cov xim yog ua ke ntawm cov no. Tib neeg lub qhov muag pom tau 500 ntxoov grey.
xim twg muaj zog tshaj?
Liab muaj lub zog qis tshaj plaws thiab violet siab tshaj.
Pom zoo:
Kuv puas tuaj yeem siv lub ntsej muag lub ntsej muag hauv qab qhov muag?
Yog tias koj twb tau siv cov tshuaj maj, ua haujlwm nruab hnub lossis hmo ntuj los yog cov tshuaj pleev xim, cov khoom no kuj zoo meej rau cov tawv nqaij ib ncig ntawm koj ob lub qhov muag, tsuav yog hom tawv nqaij muaj tib yam li tag nrho koj lub ntsej muag.
Yuav ua li cas txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau txhawm rau pom kev pom?
Txawm li cas los xij, corneal collagen cross-linking - cov txheej txheem qib siab tau pom zoo los ntawm US Food and Drug Administration (FDA) hauv xyoo 2016 - tuaj yeem txhim kho qhov pom kev hauv cov neeg mob txhua hnub nyoog. Corneal collagen cross-linking (CXL) tsis yog kho rau keratoconus, tab sis nws tuaj yeem pab tiv thaiv tus mob kom tsis txhob mob hnyav.
Puas yog cov tib neeg ntawm ib hom niaj hnub no txawv dua li cov tib neeg ntawm tib hom?
Puas yog cov tib neeg ntawm ib hom niaj hnub no zoo li txawv dua li cov tib neeg ntawm tib hom tau ntau tiam dhau los? … Yog, txhua tus neeg tuaj yeem hloov pauv me ntsis thiab dhau qhov kev hloov pauv rau lawv cov xeeb ntxwv. Puas muaj qhov sib txawv ntawm cov tib neeg ntawm tib hom?
Dab tsi ua rau qhov muag tsis pom kev hauv 1 lub qhov muag?
Muaj ntau qhov ua rau pom qhov muag tsis pom kev hauv ib lub qhov muag. Ntawm cov feem ntau yog refractive yuam kev, uas tuaj yeem ua rau pom ntev lossis luv. Lwm yam ua rau muaj xws li kab mob, migraine, thiab cataracts. Feem ntau ua rau pom qhov muag tsis pom kev tsis loj.
Cov tshuaj pleev qhov muag puas zoo rau qhov muag tsis pom kev?
Lub qhov muag qhuav ntev: Qhov muag qhuav tuaj yeem cuam tshuam koj ob lub qhov muag hauv ntau txoj hauv kev, suav nrog ua rau pom qhov muag tsis pom kev sib txawv. Thaum kua muag cuav (lubricating qhov muag tee) tuaj yeem pab tau, ntau qhov mob ntawm qhov muag qhuav yuav xav tau cov tshuaj noj lossis cov ntsaws ntsaws ntsaws ntsaws kom koj lub qhov muag xis nyob, noj qab haus huv thiab pom zoo.
