Izindaba ezidinga ukunakwa
①Uma ufanisa izibuko, usayizi wohlaka udingeka ngokuqinile uma kukhethwa uhlaka.Ububanzi nobude befreyimu kufanele kukhethwe ngokuya ngebanga lomfundi.
②Ngemva kokugqoka izibuko, lapho ubheka izinto ezinhlangothini zombili, ungathola ukuthi incazelo iyancipha futhi into ebonakalayo ikhubazekile, okuyinto evamile kakhulu.Ngalesi sikhathi, udinga ukuguqula ikhanda lakho kancane bese uzama ukubona kusukela phakathi nendawo ye-lens, futhi ukungahambi kahle kuzonyamalala.
③Uma ushona phansi, izibuko kufanele zehliswe kude ngangokunokwenzeka ukusuka endaweni engaphezulu ukuze ubone ngaphandle.
④I-glaucoma, ukuhlukumezeka kwamehlo, isifo samehlo esibi kakhulu, umfutho wegazi ophakeme, i-spondylosis yomlomo wesibeletho nabanye abantu akunconywa ukuthi kusetshenziswe.
Uke wezwa ngezibuko zokusondeza?Kusuka kumalensi agxile ngakunye, amalensi e-bifocal kanye namalensi e-multifocus aqhubekayo,
Amalensi e-multifocus aqhubekayo asetshenziswe kabanzi kumalensi okulawula i-myopia entsheni, amalensi alwa nokukhathala kubantu abadala kanye namalensi aqhubekayo kubantu abaneminyaka ephakathi kanye nasebekhulile.Ingabe uyawazi ngempela amalensi e-multifocus aqhubekayo?
01Izindawo ezintathu zokusebenza zamalensi e-multifocus aqhubekayo
Indawo yokuqala yokusebenza itholakala engxenyeni engenhla yendawo ekude yelensi.Indawo ekude iyidigri edingekayo ukuze ubone kude, esetshenziselwa ukubona izinto ezikude.
Indawo yesibili yokusebenza itholakala eduze konqenqema olungezansi lwelensi.I-proximity zone yizinga elidingekayo ukuze ubone eduze, elisetshenziselwa ukubona izinto zivalekile.
Indawo yesithathu yokusebenza ingxenye ephakathi ehlanganisa lezi ezimbili, ebizwa ngokuthi indawo ye-gradient, eshintsha kancane kancane futhi ngokuqhubekayo isuka ebangeni iye eduze, ukuze ukwazi ukuyisebenzisela ukubona izinto ezikude.
Kusukela ngaphandle, amalensi e-multifocus aqhubekayo awahlukile kumalensi avamile.
02Umthelela wamalensi e-multifocus aqhubekayo
① Amalensi e-multifocus aqhubekayo aklanyelwe ukuhlinzeka iziguli nge-presbyopia ngendlela yemvelo, elula nenethezekile yokulungisa.Ukugqoka amalensi aqhubekayo kufana nokusebenzisa ikhamera yevidiyo.Ipheya lezibuko liyakwazi ukubona kokubili kude naseduze, kanye nezinto ezikude.Ngakho sichaza amalensi aqhubekayo njengokuthi "zoom lens", ipheya eyodwa yezibuko ilingana namapheya amaningi ezingilazi.
② Ukuze wehlise ijubane ukukhathala okubukwayo futhi ulawule izinga lokukhula kwe-myopia, kodwa akuyona yonke intsha efanelekile ukugqoka izibuko ze-multi-focus eziqhubekayo, isixuku silinganiselwe kakhulu, i-lens inomthelela othize kuphela ekulungiseni i-lag nge-implicit oblique myopia izingane. .
Qaphela: Njengoba iziguli eziningi ze-myopia zine-oblique yangaphandle kune-oblique yangaphakathi, inani labantu abafanele ukugqoka izibuko ezigxilile eziningi eziqhubekayo ukulawula i-myopia lilinganiselwe kakhulu, libalwa kuphela u-10% wezingane kanye nentsha eyi-myopia.
③ Amalensi aqhubekayo angasetshenziswa futhi ukukhulula ukukhathala okubonakalayo kubantu abasha naphakathi kweminyaka.Njengomgogodla womphakathi, ukukhathala kwamehlo kwabancane nabaneminyaka ephakathi kuyafaneleka ukunakwa.Amalensi aqhubekayo angafana namalensi alwa nokukhathala ukuze akhulule ukukhathala okubonakalayo kubasebenzisi bekhompyutha, futhi angasetshenziswa njengamalensi oshintsho ukuze kuqinisekiswe umbono omude, ophakathi nendawo futhi oseduze wokugxila okuningi esikhathini esizayo.
03Ukukhetha izibuko ze-multifocal eziqhubekayo
Izidingo zomumo
Gwema ukukhetha ozimele abane-nasal bevel enkulu ngoba indawo eseduze yamafreyimu anjalo incane uma kuqhathaniswa.
Izidingo zezinto ezibonakalayo
Kungcono ukuthi ungakhethi amapuleti namafreyimu we-TR ngaphandle kwamapayipi ekhala.Lokhu kungenxa yokuthi ibanga eliseduze neso lamafreyimu anjalo ngokuvamile lincane kakhulu (kufanele ligcinwe cishe ku-12mm ngokujwayelekile), iso eliseduze alikwazi ukufinyelela indawo eseduze ukusetshenziswa ngokuvamile, futhi kunzima ukulungisa ukutsheka. I-engeli yezibuko.
Usayizi wesicelo
Ubude obuqondile obuhambisana nokuma komfundi wohlaka kufanele ngokuvamile buhlangabezane nezimfuneko ezicaciswe umkhiqizo, ngokuvamile omkhulu noma olingana nezimfuneko zobude besiteshi obungu-16MM+.Uma kunezidingo ezikhethekile, kufanele ubheke izidingo zelensi ukuze ukhethe usayizi ofanele wohlaka.
Izidingo zokusebenza
Amafreyimu anokuqina okuhle kufanele akhethwe ukuze agweme ukuguquguquka njalo kwezibuko ezithinta izidingo zokusetshenziswa.Izibuko zingagcinwa ku-engeli engu-10 kuya ku-15 degrees.Ubuso obugobile befreyimu kufanele buhambisane namakhontosi obuso bomuntu ogqokile.Ubude, i-radian kanye nokuqina kwesibuko kufanelekile ukugqoka okuvamile.
Isikhathi sokuthumela: Jul-20-2022