Okokuqala, Iyini ilensi ye-multifocal eqhubekayo?
Ngaphezu koku-1, ukugxila kancane kancane i-lens ikulensi efanayo kuphela kude phakathi kokukhanya futhi icishe iphele, ngendlela ye-dioptre yokushintsha kancane kancane, ukusuka lapho kusondela kancane kancane ukufundwa kokufundwa kuphele ukude futhi kucishe kuphele i-organic ndawonye, ngokunjalo Ilensi ngesikhathi esifanayo bheka ibanga, ibanga eliphakathi futhi uvale ukukhanya okudingekayo okuhlukile.
Amalensi aqhubekayo anezindawo ezintathu zokusebenza
Indawo yokuqala yokusebenza indawo ekude etholakala phezulu kwelensi.Ibanga lendawo inombolo yamadigri adingekayo ukuze ubone kude, asetshenziselwa ukubona izinto ezikude.
Indawo yesibili yokusebenza indawo eseduze etholakala emaphethelweni aphansi elensi.I-Proximity inombolo yamadigri adingekayo ukuze ubone izinto eziseduze.
Indawo yesithathu yindawo ephakathi nendawo ehlanganisa lezi ezimbili.Ibizwa ngokuthi i-gradient area, kancane kancane ishintsha izinga lokubuka kude ifike ezingeni lokubuka eduze, ukuze ukwazi ukuyisebenzisela ukubona izinto ezisebangeni eliphakathi nendawo.Ngokubukeka, amalensi e-multifocal aqhubekayo awahlukaniseki kumalensi avamile.
Okwesibili, yiziphi izinhlobo zamalensi amaningi asebenza ngokuqhubekayo?
Eminyakeni yamuva nje, i-lens eqhubekayo ye-multifocal ibilokhu ikhula futhi yanda ngokushesha e-China.Njengamanje, ngokuya ngemodi yokusebenzisa iso nezici zomzimba zabantu beminyaka eyahlukene, ucwaningo oluhambisanayo lwamalensi agxile kakhulu lungahlukaniswa izigaba ezintathu:
1. Ilensi yokulawula i-myopia yentsha.Isetshenziselwa ukunciphisa ukukhathala okubukwayo nokulawula ukuthuthukiswa kwe-myopia.
2. Ama-lens anti-ukukhathala kubantu abadala.Isetshenziselwa abantu abaningi abasebenza kude ukuze banciphise ukukhathala okubukwayo okubangelwa umsebenzi.
3. Amalensi aqhubekayo kubantu abaneminyaka ephakathi kanye nasebekhulile.Ipheya lezibuko zabantu abaneminyaka ephakathi nasebekhulile bangabona kalula kude naseduze, ukuze amehlo akho athole umuzwa wobusha.
Okwesithathu, Uyini umsebenzi welensi ye-multifocal eqhubekayo?
(1) Yehlisa ukukhathala okubukwayo futhi ulawule isivinini sokukhula kwe-myopia, kodwa akuyona yonke intsha efanelekile ukugqoka izibuko ze-multifocal eziqhubekayo, inani labantu lilinganiselwe kakhulu, i-lens inomphumela othize kuphela ekulungiseni i-lag kanye ne-myopia engacacile yezingane.
Qaphela: Ngenxa yokuthi iziguli eziningi ezine-myopia zinokusebenza kwangaphandle kunokusebenza ngokusobala, inani labantu abafanele ukugqoka izibuko ze-multifocal eziqhubekayo ukulawula i-myopia lilinganiselwe, elibalela cishe u-10% wezingane nentsha ene-myopia.
(2) Othisha, odokotela, ibanga eliseduze nabantu abaningi kakhulu abasebenzisa amakhompiyutha, ukuze kuncishiswe ukukhathala okubonakalayo okulethwa umsebenzi.
Kubantu abaneminyaka ephakathi kanye nasebekhulile abaphethe izibuko ukuze babone kalula ababona kude eduze.Ilensi ye-multifocal eqhubekayo yakhelwe ukuhlinzeka ngendlela yemvelo, elula nenethezekile ukuze iziguli ze-presbyopia zilungiswe.Ukugqoka ilensi eqhubekayo kufana nokusebenzisa ikhamera yevidiyo.Ipheya lezibuko liyakwazi ukubona izinto ezikude, eziseduze nezikude ngokucacile.Ngakho-ke, sichaza amalensi aqhubekayo njengokuthi "amalensi asondeza", bese sifaka ipheya yezibuko elilingana nokukhokhela izibuko eziningi.
Okwesine,Yini okufanele ngiyinake lapho ngigqoke amalensi e-multifocal aqhubekayo?
(1)Uma ukhetha uhlaka lwesibuko, ubukhulu bohlaka buqinile.Kuyadingeka ukukhetha ububanzi befreyimu efanele kanye nobude ngokuya ngebanga lomfundi.
(2) Ngemva kokugqoka izibuko, lapho ubheka izinto ezinhlangothini zombili, ungathola ukuthi ukucaca kuyancipha futhi into ikhubazekile, okuyinto evamile kakhulu.Ngalesi sikhathi, udinga ukuguqula ikhanda lakho kancane bese uzama ukubona kusukela phakathi nendawo ye-lens, futhi ukungahambi kahle kuzonyamalala.
(3)Lapho ushona phansi, izibuko kufanele zibe ngaphansi ngangokunokwenzeka ukusuka phezulu ukuze zibone ngaphandle kwendawo.
(4) I-glaucoma, ukuhlukumezeka kwamehlo, isifo samehlo esibi, umfutho wegazi ophakeme, i-spondylosis yomlomo wesibeletho nabanye abantu akunconywa ukuthi basebenzise.
Isikhathi sokuthumela: Sep-17-2022