Khoos phib tawj refractometer yog ib qho khoom siv hluav taws xob lub hom phiaj optometry, uas yog cov khoom lag luam ntawm kev sib txuas ntawm kev soj ntsuam xyuas tshuab thiab hluav taws xob tshuab computer. Kev ntsuas tsis tas yuav tsum muaj kev txiav txim siab ntawm cov kws kho mob thiab cov kws kho mob, thiab ua tib zoo ntsuas qhov ntsuas qhov tsis pom kev los ntawm cov qauv ua ntej.
Vim yog qhov yooj yim, ceev thiab lub sijhawm kawm luv luv ntawm computerized optometry, nws yog qhov tsim nyog rau kev nrhiav tau sai thiab ua ib qho chaw pib rau kev kawm optometry lossis rau kev tshuaj xyuas qhov muag niaj hnub.
Nrog rau kev siv cov thev naus laus zis hauv computer refractometers, qhov tseeb ntawm computer refractometers tau zoo tuaj. Ntau cov twj paj nruag sib xyaw ua ke cov haujlwm ntawm keratometer lossis corneal topography, thiab qee cov tuam txhab cov cuab yeej tau txais kev txuas mus rau cov khoom siv refractometer. , cov txiaj ntsig ntsuas tau ncaj qha tuaj rau hauv cov khoom siv refractometer, uas yooj yim siv; lub khoos phis tawj portable refractometer tuaj yeem siv rau hauv cov txheej txheem phais thiab kev tshuaj ntsuam.
Niaj hnub nimno computerized refractometer tsim feem ntau muaj ob yam tseem ceeb:
1. Kev tswj xyuas
Kev tswj cov chaw nyob yog qhov tseem ceeb tshwj xeeb tshaj yog rau feem ntau txoj kev optometry. Yuav luag tag nrho cov refractometers xav kom tus neeg saib xyuas tus cursor lossis cursor duab, uas txhawb kev hloov kho thiab ua rau muaj kev kho ntau dhau ntawm myopia lossis undercorrection ntawm hyperopia. Txawm hais tias qhov ntsuas tus cursor yog tsim los nyob rau hauv infinity los ntawm txoj kev kho qhov muag, vim hais tias qhov ntsuas yog ze heev rau qhov kev kawm. Yog li ntawd, thaum lub sij hawm tsim qauv, tus cursor qhov ntsuas yog "fog-visualized", thiab ua ntej qhov kev ntsuas pib, tus neeg kuaj xyuas thawj zaug pom tus cursor "fog-visualized" cursor los so kom txias, tab sis tsis tuaj yeem tshem tawm qhov ze-sensing txias.
2. Lub teeb pom kev yog lub teeb infrared
Lub teeb pom kev ntawm lub computer refractometers tam sim no siv tag nrho cov teeb infrared nrog lub wavelength ntawm 800-950 nm. Cov laj thawj yog: ①Infrared rays yog absorbed tsawg dua los ntawm cov ntaub so ntswg nyob rau hauv lub qhov muag tshaj li pom lub teeb, thiab ntau lub teeb yog reflected los ntawm lub fundus. Yog li ntawd, nws yog ib qho tseem ceeb kom paub tias lub teeb lub zog poob ntawm lub teeb dhau los ntawm qhov nruab nrab intraocular tsawg dua, tshwj xeeb tshaj yog rau lub qhov muag nrog opacity ntawm qhov nruab nrab refractive. ② Rau lub qhov muag tshuaj xyuas, lub hom phiaj nrhiav pom thiab pom lub teeb pom kev, uas zoo dua kov yeej qhov teeb meem hloov kho los ntawm kev ntsuas lub hom phiaj.
Vim yog cov tuam txhab tsim khoom sib txawv, cov qauv tsim thiab cov qauv ntawm lub computer refractometer kuj txawv, thiab tus neeg kuaj xyuas yuav tsum tau nyeem cov lus qhia kom ntxaws ua ntej siv lub computer refractometer. Cov qauv ntawm lub computer refractometer yog:
① Tus cursor uas tus neeg soj ntsuam saib.
② Lub puab tsaig thiab lub taub hau tuaj yeem hloov kho kom tus neeg mob lub taub hau ruaj khov thaum lub sijhawm kuaj.
③ Lub joystick tuaj yeem txav mus rau sab nraud, nce thiab nqis, sab laug thiab sab xis los kho qhov ua kom pom tseeb thiab kho qhov chaw ntawm lub qhov muag.
④ Lub monitor qhia txoj haujlwm ntawm lub qhov muag yuav tsum tau kuaj thiab ntsuas qhov ntsuas.
⑤ Lub tshuab luam ntawv