Yize ama-lens ajwayelekile angahlangana ngokuyisisekelo izidingo zokusebenzisa iso zabantu nsuku zonke, kodwa ngenani elandayo labantu abaseduze, ngokuya ngezimo ezahlukahlukene zokusebenzisa, abakhiqizi be-lens baklame ama-lens asebenzayo asetshenziswa kakhulu.
Isibonelo, ama-lens alwa namakhompyutha angomakhalekhukhwini namakhompyutha, ama-lens aqabulayo elanga elingaphandle elangeni, amalensi okushayela ebusuku wokushayela ebusuku njalo, kanye nama-lens athuthukile abantu abathile ...
Yini aI-lens ethuthukayo ye-multifocal?
Ngokweqiniso, kungaziwa ukuthi uhlobo lwamalensi akhiwa ngamaphoyinti amaningi okugxila namazinga ahlukile.
Ngokuvamile, kunezindawo ezine: indawo eseduze, eduze kwendawo, indawo eqhubekayo, indawo yesobunxele neyakwesokunxele (ebizwa ngokuthi yindawo ye-peripheral noma indawo ye-fuzzy).
I-lens inokungabonakali okungabonakali kokuphawulekile nokuboniswa okuvelele ~
Ama-lens athuthukayozilungele abantu
Emsebenzini wangempela, imibandela yokwahlulela ukuthi umuntu kufanelekile yini ukugqoka ama-lens athuthukayo adinga ukunqunywa ngokuya ngezidingo zamakhasimende. Ngemuva kokuthola ukuthi amakhasimende alungele inani labantu, abasebenzi bethu kufanele benze i-Optometry enembile kubo ukuze baqinisekise ukuthi banesiphikiso esifanele sezibuko.
Izinkomba zeAma-lens athuthukayo
1. Kunzima ukubona eduze, ngakho-ke ukufunda izibuko kuyadingeka, ngethemba lokugwema inkinga ebangelwa ukushintshwa kwezibuko ngenxa yabantu ababona kude.
2. Abagqokwa abangagculisekile ngokubonakala kwama-bifocals noma ama-triocals.
I-3. Abantu abase-40s yabo nama-50s asanda kungena esigabeni se- "Presbyopia".
4. Bhekani kude futhi eduze kwabantu abashintshana njalo: othisha, izikhulumi, abaphathi.
I-5. Oxhumana nabo (isib. Abaholi bezwe bagqoka ama-multifocal lens).
Contraindication ofAma-lens athuthukayo
1. Isikhathi eside ukubona abasebenzi abaseduze: njengekhompyutha kakhulu, abadwebi, abadwebi bezokwakha, imidwebo yokwakhiwa kwezakhiwo;
2. Umsebenzi okhethekile: Njengabadokotela bamazinyo, abakwaTobrarians, (ngenxa yobudlelwano bokusebenza, imvamisa sebenzisa phezulu kwelensi ukubona abashayeli bezindiza, amatilosi (sebenzisa phezulu kwelensi ukubona okusondelana) noma ukusebenzisa umphetho ophezulu we Ilensi ukubona inani labantu okuhlosiwe, ukuhamba okuphezulu, ukuzivocavoca;
I-3. Iziguli ezine-Anisometropia: Womabili amehlo ane-Anisometropia> 2.00D, asebenzayo degree> 2.00D, ikakhulukazi, ikakhulukazi ama-axial asymmetry;
I-4.ADD engaphezu kuka-2.50d ("eduzane nokusebenzisa + 2.50D", okubonisa ukuthi amehlo athuthukise ama-presbywopiya, udinga ukwandisa izingilazi zokufunda zama-degree angama-250.);
5. Ngaphezu kweminyaka engama-60 ubudala (kuya ngesimo sempilo);
6. Labo abavame ukugqoka ukukhanya okuphindwe kabili ngaphambi (ngenxa yendawo ebanzi eduzane nendawo yokukhanya okuphindwe kabili kanye nendawo emincane eduzane nendawo yesibuko esithuthukayo, kuzoba ne-inadaptical);
7. Ezinye iziguli ezinezifo zamehlo (i-glaucoma, cataract), strabismus, degree ziphezulu kakhulu akufanele zigqoke;
8. Ukugula Okumatasa: Kubhekiswa inhlanganisela yesiyezi kanye nesiyezi esibangelwa umsebenzi ophansi wokuzimela endaweni esheshayo yokuzimela noma ukunyakaza okunyakazayo, ukugula kokunyakaza, njll. Ngaphezu kwalokho, iziguli ezine-hypertension kanye ne-arteriosteosis, lapho isifo sazo singalawulwa ngempumelelo, zivame ukuvela ngenxa yokuthola igazi elinganele igazi elibangelwa isiyezi, kwesinye isikhathi kungadala futhi i-vasospasm, nekhanda;
9. Abantu abanobunzima bokuzivumelanisa nezibuko;
Isihluthulelo ukuzeAma-lens athuthukayo: I-Optometry enembile
Ukuvuselelwa kweseduze akujulile, futhi ubungozi bujulile.
Ngenxa ye-lens eguqukayo ye-multifocal yelensi eqhubekayo ngokuqhathaniswa nelensi elikhanyayo, amalensi we-multifocli athuthukayo akufanele anelise kuphela umbono omuhle endaweni ekhanyayo, kodwa futhi acabangele umphumela wangempela endaweni ekhanyayo ukhululekile ukugqoka.
Ngalesi sikhathi, i- "Ukunemba Okukhanyayo" kufanele isuselwe ekusetshenzisweni okuhle kwesibani esiseduze, ngakho-ke i-myopia luhlazo lokukhanya okude akufanele ibe "ekujuleni kakhulu", ngenkathi i-myopia lukhuni ilula " , ngaphandle kwalokho "okukhulu kakhulu" kokungezwa kuzokwenza ukuba induduzo yelensi yehle.
Esisekelweni sokuqinisekisa ukuthi umbono wokukhanya okulula ucacile futhi ukhululekile ngaphakathi kobubanzi bokusebenzisa, ukukhanya okukude kwamalensi athuthukayo kufanele kube bushelelezi futhi ukukhanya okujulile kufanele kube nokujulile.
Ukukhetha kanye nokulungiswa kweI-lens eqhubekayokhama
Ukugxila okuningana okuningana kubaluleke kakhulu ekukhetheni uhlaka olufanele nokulungiswa. Ukunakwa okuthile kufanele kukhokhwe emaphoyinti alandelayo:
Ukuqina kohlaka kuhle, ngokuhambisana nokwakheka kobuso bekhasimende, ngokuvamile akufanele kukhethe ukwehluka okulula kohlaka olunama-Frabler, ukuqinisekisa ukuthi i-curvature yangaphambili yohlaka kanye nebunzi lokugqokwa ingaguquguquki.
Uhlaka kufanele lube nokuphakama okuthe mpo okum mpo, okufanele kukhethwe ngokuya ngohlobo lwelensi elikhethiwe. Ngaphandle kwalokho, kulula ukusika ingxenye esondele kakhulu yombono lapho usika onqenqemeni:
Indawo ye-medial yekhala lelensi izokwanela ukwamukela indawo ye-gradient; Uhlaka lwe-ray-ban kanye nezinye izinhlaka ezinezinyawo ezinkulu ezansi kwempumulo eduze kwensimu yombono incane kunohlaka olujwayelekile, ngakho-ke alulungele isibuko esijwayelekile.
Ibanga leso lelensi yohlaka (ibanga phakathi kwe-vertex ngemuva kwelensi kanye ne-vertex ye-anterex ye-cornea, ebizwa nangokuthi i-vertex ibanga) kufanele ibe mincane ngangokunokwenzeka ngaphandle kokuthinta ama-eyelashes.
Lungisa i-angle yangaphambili yohlaka ngokuya ngezici zobuso zabagqokile (ngemuva kokuthi uhlaka luhlanganiswe, i-angle yokuhlangana phakathi kwendiza nendiza emile yendandatho ka-10-15, uma izinga likhulu kakhulu, I-angle yangaphambili ingashintshwa ibe nkulu), ukuze ifane nohlaka nobuso ngangokunokwenzeka, ukuze usize ukugcina insimu yokubuka eyanele.
Isikhathi Sokuthumela: Dec-05-2022