Nakuba amalensi avamile akwazi ukuhlangabezana nezidingo ze-People's Daily zokusetshenziswa kwamehlo, kodwa ngokwanda kwenani labantu ababona eduze, ngokwezimo ezihlukene zokusetshenziswa, abakhiqizi bamalensi baklame amalensi asebenzayo asetshenziswa kakhulu.
Isibonelo, amalensi aluhlaza okwesibhakabhaka omakhalekhukhwini namakhompuyutha, amalensi ashintsha umbala okukhanya kwelanga ngaphandle ehlobo, amalensi okushayela ebusuku okushayela njalo ebusuku, namalensi aqhubekayo kubantu abathile...
Yini ailensi ye-multifocal eqhubekayo?
Ngokwezwi nezwi, kungaziwa ukuthi iwuhlobo lwamalensi olwakhiwe amaphuzu agxile amaningi kanye namadigri ahlukene.
Ngokuvamile, kunezindawo ezine: indawo ekude, indawo eseduze, indawo eqhubekayo, indawo yokuguquguquka yesokunxele nesokudla (ebuye ibizwe nge-peripheral noma indawo engaqondakali).
Ilensi inombhalo ongabonakali kanye nokubhala okuvelele ~
Amalensi aqhubekayozilungele abantu
Emsebenzini wangempela, indlela yokwahlulela ukuthi umuntu ukulungele yini ukugqoka amalensi aqhubekayo idinga ukunqunywa ngokuya ngezidingo zamakhasimende.Ngemva kokunquma ukuthi amakhasimende afanele yini inani labantu, abasebenzi bethu kufanele bawahlole ngokunembile ukuze baqinisekise ukuthi banencwadi kadokotela efanelekile yezingilazi.
Izinkomba zeamalensi aqhubekayo
1. Kunzima ukubona eduze, ngakho kudingeka izibuko zokufunda, ngethemba lokugwema inkathazo ebangelwa ukushintshwa kwezibuko ngenxa yabantu ababona kude.
2. Abagqoki abanganelisekile ngokubukeka kwama-bifocal noma ama-triocal.
3. Abantu abaneminyaka engu-40 no-50 abasanda kungena esigabeni "se-presbyopia".
4. Bheka kude naseduze nabantu abashintshashintsha njalo: othisha, izikhulumi, abalawuli.
5. Abaxhumanisa nomphakathi (isb., abaholi bombuso bafaka amalensi agxile ezintweni eziningi).
Contraindications ofamalensi aqhubekayo
1. Isikhathi eside sokubona izisebenzi eziseduze: ezifana nekhompiyutha ngokweqile, abadwebi, abaklami bemidwebo, imidwebo yemiklamo yezakhiwo;
2. Umsebenzi okhethekile: njengodokotela bamazinyo, izisebenzi zasemtatsheni wezincwadi, (ngenxa yobudlelwano bokusebenza, ngokuvamile basebenzisa indawo engaphezulu yelensi ukuze babone abaseduze) abashayeli bezindiza, amatilosi (sebenzisa indawo engaphezulu yelensi ukuze ubone okuseduze) noma usebenzise unqenqema olungaphezulu lwelensi. i-lens ukubona inani labantu okuhlosiwe, ukuhamba okuphezulu, ukuzivocavoca;
3. Iziguli ezine-anisometropia: womabili amehlo ane-anisometropia >2.00D, ikholomu degree esebenzayo>2.00D, ikakhulukazi i-axial asymmetry;
4.ADD ngaphezu kwe-2.50D (" eduze nokusetshenziswa +2.50d ", okubonisa ukuthi amehlo athuthukile i-presbyopia, udinga ukwandisa izibuko zokufunda ze-250 degrees.);
5. Ngaphezu kweminyaka engama-60 ubudala (kuya ngesimo sempilo);
6. Labo abavame ukugqoka ukukhanya okuphindwe kabili ngaphambili (ngenxa yendawo ebanzi eseduze yokusetshenziswa yokukhanya okuphindwe kabili kanye nendawo encane yokusetshenziswa kwesibuko esiqhubekayo, kuyoba nokungakwazi ukuguquguquka);
7. Ezinye iziguli ezinezifo zamehlo (i-glaucoma, i-cataract), i-strabismus, i-degree iphezulu kakhulu akufanele igqoke;
8. Isifo sokunyakaza: kusho inhlanganisela yesiyezi kanye nesiyezi esibangelwa ukungasebenzi kahle kwebhalansi ekuzilawuleni okusheshayo noma ukunyakaza okwenziwayo, okufana nesifo sokunyakaza, ukuguliswa kolwandle, njll.;Ngaphezu kwalokho, iziguli ezinomfutho wegazi ophakeme kanye ne-arteriosclerosis, lapho isifo sazo singalawulwa ngokuphumelelayo, ngokuvamile zivela ngenxa yokuntuleka kwegazi kwe-cerebrovascular okubangelwa isiyezi, ngezinye izikhathi kungabangela i-vasospasm, nekhanda;
9. Abantu abanobunzima bokujwayela izibuko;
Isihluthulelo sokuamalensi aqhubekayo: I-Optometry enembile
Ukubona eduze akujulile, nokubona kude kujulile.
Ngenxa yemininingwane yelensi eqhubekayo ye-multifocal uma kuqhathaniswa nelensi yokukhanya okukodwa, ilensi eqhubekayo ye-multifocal akufanele nje yanelise umbono omuhle endaweni yokukhanya ekude, kodwa futhi icabangele umphumela wangempela endaweni yokukhanya eseduze ukuze yenze yonke lens eqhubekayo. ukhululekile ukugqoka.
Ngalesi sikhathi, "ukunemba kokukhanya okude" kufanele kusekelwe ekusetshenzisweni kahle kokukhanya okuseduze, ngakho ukukhanya kwe-myopia yokukhanya okude akufanele kube "kujule kakhulu", kuyilapho ukukhanya kwe-myopia yokukhanya okude akufanele "kungashoni kakhulu" , ngaphandle kwalokho "inkulu kakhulu" ye-ADD izobangela ukunethezeka kwelensi kwehle.
Ngokwesisekelo sokuqinisekisa ukuthi umbono wokukhanya okukude ucacile futhi unethezekile phakathi kwebanga langempela lokusetshenziswa, ukukhanya okukude kwelensi eqhubekayo kufanele kungabi mnyama futhi ukukhanya kokubona kude kufanele kujule futhi kujule nje.
Ukukhethwa nokulungiswa kweilensi eqhubekayoamafreyimu
I-multi-focus eqhubekayo ibaluleke kakhulu ekukhetheni uhlaka olulungile nokulungisa.Kufanele kuqashelwe ngokukhethekile la maphuzu alandelayo:
Ukuzinza kohlaka kuhle, ngokuhambisana nokuma kobuso bekhasimende, ngokuvamile akufanele kukhethwe ukuwohloka okulula kohlaka olungenafreyimu, ukuze kuqinisekiswe ukuthi ijika eligobile langaphambili lohlaka kanye nokugoba kwesiphongo somuntu ogqokile kuyahambisana.
Uhlaka kufanele lube nobude obanele obuqondile, okufanele bukhethwe ngokuya ngohlobo lwamalensi akhethiwe.Uma kungenjalo, kulula ukusika ingxenye eseduze yokubuka lapho usika unqenqema:
Indawo emaphakathi yekhala le-lens izokwanela ukwamukela indawo ye-gradient;Uhlaka lwe-Ray-ban namanye amafreyimu anokuthambekela okukhulu ngaphansi kwekhala eliseduze nendawo yokubona luncane kunohlaka olujwayelekile, ngakho alufaneleki isibuko esihamba kancane.
Ibanga leso le-lens yefreyimu (ibanga phakathi kwe-vertex yangemuva ye-lens kanye ne-vertex yangaphambili ye-cornea, ebizwa nangokuthi ibanga le-vertex) kufanele libe lincane ngangokunokwenzeka ngaphandle kokuthinta i-eyelashes.
Lungisa i-Angle yangaphambili yohlaka ngokwezici zobuso zomuntu ogqokile (ngemuva kokufakwa kohlaka, i-engeli yokuhlangana phakathi kwendiza kanye nendiza eqondile yendandatho yesibuko ngokuvamile ingu-10-15 degrees, uma idigri inkulu kakhulu, i-Engeli yangaphambili ingalungiswa ibe nkulu), ukuze ihambisane nohlaka nobuso ngangokunokwenzeka, ukuze kusize ukugcina inkambu yokubuka eyanele kancane kancane.
Isikhathi sokuthumela: Dec-05-2022