Reflective instrument optometry rau lub ntsej muag hloov pauv lub ntsej muag lub ntsej muag tuaj yeem siv rau kev kuaj mob optometry, ob qho tib si tsis muaj dilation thiab tuaj yeem ntsuas qhov degree ntawm refractive. Reflective instrument optometry tau txais tag nrho cov tshuab luam ntawv tsis siv neeg, tsis muaj kev hloov pauv, feem ntau yog ob peb vib nas this mus rau ob peb feeb los txiav txim siab tus neeg mob, thiab tuaj yeem txiav txim siab qhov cuam tshuam ntawm qhov tsis zoo, rau lub lens kho kom raug ntau dua refractive hwj chim thiab kev ncua deb ntawm cov menyuam kawm ntawv. .
Qhov tseeb ntawm lub refractometer los ntawm ntau yam, xws li tus neeg mob lub taub hau thiab qhov muag nrog qhov tsis zoo, txav mus los, qhov muag refraction nyob rau hauv lub refraction meter yog tsis txaus tsom, yog li ntawd so tsis txaus, yuav inevitably cuam tshuam qhov tseeb ntawm Cov txiaj ntsig ntawm kev ntsuas refraction, Qhov degree ntawm kev kuaj rov qab yog qhov sib txawv heev. Rau cov menyuam yaus thiab cov neeg mob uas muaj qhov cuam tshuam ntawm qhov sib txawv ntawm qhov sib txawv, lub computer refractometer kuaj yuam kev yog qhov loj, txawm tias tsis tuaj yeem kuaj lub diopter. Yog li ntawd, nws tsis tsim nyog siv lub degree ntawm refraction ntawm lub computer raws li lub hauv paus ntawm lub tsom iav. Khoos phib tawj refractometer tsis tuaj yeem hloov lub retinographer optometry thiab lens kho thev naus laus zis, tsuas yog muab cov ntaub ntawv siv tau zoo rau kev kho qhov muag pom.
Qhov tseeb ntawm lub refractometer los ntawm ntau yam, xws li tus neeg mob lub taub hau thiab qhov muag nrog qhov tsis zoo, txav mus los, qhov muag refraction nyob rau hauv lub refraction meter yog tsis txaus tsom, yog li ntawd so tsis txaus, yuav inevitably cuam tshuam qhov tseeb ntawm Cov txiaj ntsig ntawm kev ntsuas refraction, Qhov degree ntawm kev kuaj rov qab yog qhov sib txawv heev. Rau cov menyuam yaus thiab cov neeg mob uas muaj qhov cuam tshuam ntawm qhov sib txawv ntawm qhov sib txawv, lub computer refractometer kuaj yuam kev yog qhov loj, txawm tias tsis tuaj yeem kuaj lub diopter. Yog li ntawd, nws tsis tsim nyog siv lub degree ntawm refraction ntawm lub computer raws li lub hauv paus ntawm lub tsom iav. Khoos phib tawj refractometer tsis tuaj yeem hloov lub retinographer optometry thiab lens kho thev naus laus zis, tsuas yog muab cov ntaub ntawv siv tau zoo rau kev kho qhov muag pom.
Tam sim no, optometry muaj ntau heev, txhua lub khw muag khoom kho qhov muag, suav nrog tsev kho mob thiab chaw kho qhov muag yog ib qho yuav tsum paub cov txuj ci. Tam sim no saib qee qhov ntawm cov ntsiab lus ntawm cov txheej txheem.
1. Kev kho qhov muag optometry tsom rau cov neeg siv khoom kom pom qhov tseeb tom qab qhov kawg, tau pom qhov pom tseeb. Lub hom phiaj ntawm kev kho qhov muag dav dav: pom pom tseeb, qhov muag xis nyob, nyeem ntawv ntev.
2. Kev npaj ntawm optometry: khoos phis tawj los ntsuas lub teeb ib leeg, kev sib xyaw refractometer tshuaj tua kab mob, qib ntawm cov khoom siv kho.
3. pos huab li: feem ntau monocular pos huab rau lub computer optometry tau rho tawm 1.50D, ua rau tus neeg mob tuaj yeem pom 0.3 ntawm daim duab pom kev pom.
Nco tseg: Raws li nyob rau hauv cov txheej txheem ntawm pos huab raws li monocular muaj peev xwm kom meej meej paub qhov txawv ntawm qhov pom kev, nws ob lub qhov muag nce los ntawm {{0}}.25D ~ 0.50D, kom tswj tau tus qauv nyob rau hauv ib tug fuzzy lub xeev.
4. Txhawm rau pos huab raws li pom: tus neeg mob tau saib li 5 feeb, thiab tom qab ntawd maj mam nce qhov tsis zoo kheej kheej. Txog thaum tus neeg mob tuaj yeem pom lub hom phiaj zoo tshaj plaws kom deb li deb. Rau cov pos huab tom qab ua tiav thawj zaug ib lub qhov muag liab thiab ntsuab tshuav, liab thiab ntsuab tshuav nyiaj li cas ua raws li lub hauv paus ntsiab lus ntawm kev txo liab thiab ntsuab. Qee zaum cov liab thiab ntsuab tshuav nyiaj li cas ntawm cov neeg mob tsis tuaj yeem lav tag nrho cov xim liab thiab ntsuab kom pom tseeb, koj tuaj yeem nce -0.25D, ntsuab li ntshiab, thiab tom qab ntawd kho lub lens txuas ntxiv rau 0 .12.
5. Yog tias tus neeg mob muaj astigmatism yuav tsum tau kho kom zoo ntawm astigmatism: los ntawm tus ntoo khaub lig cylindrical lub tog raj kheej kom pom astigmatism axial thiab astigmatism, cam khwb cia honeycomb raws li tus qauv, kho tus ntoo khaub lig cylindrical lens kov ntawm axis. Yog tias koj siv lub disc xoob los kuaj xyuas qhov astigmatism ntawm axial, qhov kev sim thawj zaug rau huab tsis tuaj yeem ua rau pom kev pom ntawm 1.0, tab sis kom ua tiav qhov 0.7 raws li tus qauv ua tau.
6. astigmatism axis ntawm kev kuaj pom: tig hla lub cylindrical lo ntsiab muag uas nug tus neeg mob sab ntawm lub lens ntshiab, yog tias ob qho tib si ntshiab, axial hloov kho qhov kawg. Ib sab ntshiab, lwm sab tsis meej, nyob rau hauv lub meej nto hloov axis, chasing liab dot. Thaum astigmatism ntau dua 1.00, caum 5, rov qab 2; thaum astigmatism axis tsawg dua los yog sib npaug rau 1.00, caum 10, rov qab 5.
7. Kev kho kom zoo astigmatism: nug tus neeg mob ntawm ob sab uas sab ntshiab, xws li ob qho tib si ntshiab thiab kawg.
Tsis zoo li qhov tseeb, nyob rau hauv qhov tseeb, qhov chaw liab ntawm qhov axial piav qhia ntawm astigmatism tsawg kho, nce ntawm -0.25D astigmatism. Yog hais tias lub ntsiab lus dawb ntawm axial piav qhia ntawm astigmatism overcorrection, txo -0.25D astigmatism.
Nce lossis txo -0.25D thiab tom qab ntawd tig, kom meej, kawg. Xws li lub ntsej muag ntshiab hloov tsis meej, ploj -0.25D kawg.
Nco tseg: nce lossis txo {{0}}.50D lub tog raj kheej, tib lub sijhawm kom txo lub pob 0.25D.
8. Tom qab kev txiav txim siab ntawm astigmatism rov liab thiab ntsuab tshuav nyiaj li cas. Tom qab qhov sib npaug ntawm kev kuaj pom liab thiab ntsuab monocular tiav, qhov muag pom sab laug saum toj no.
9. qhov sib npaug ntawm qhov muag: tsom iav tib lub sijhawm los ntawm 0.75D. Ntawm no kuv siv txoj kev sib cais prism kom pom qhov sib npaug ntawm lub ntsej muag.
Lub qhov muag sab xis pem hauv ntej 2 △ hauv qab ntawm lub prism, kom lub hom phiaj raws li lub sab saum toj ua haujlwm, sab laug qhov muag pem hauv ntej 2 △ hauv qab ntawm lub prism, kom lub hom phiaj raws li lub hauv qab hloov. Ob lub qhov muag thaum saib tib yam li tus qauv, koj tuaj yeem pom ob sab saud thiab qis dua raws li tus qauv, tom qab kev sib cais ntawm ob lub qhov muag, koj tuaj yeem sib piv tib qhov chaw ntawm qhov muag ntawm lub qhov muag ntawm kev kho cov duab zoo.
Ob lub qhov muag tib lub sij hawm saib raws li tus qauv, tus nqi synchronized ob lub qhov muag ntxiv rau {{0}}.25D kheej kheej daim iav, kom txog rau thaum lub qhov muag pom 1.0 raws li tus qauv.
