Inkcazo yoMqondiso weDefocus
"I-Defocus" ngumqondiso obalulekileyo obonakalayo onokuthi utshintshe indlela yokukhula ye-eyeball ekhulayo. Ukuba uvuselelo lwe-defocus lunikezelwa ngokunxiba iilensi ngexesha lophuhliso lwamehlo, iliso liya kukhula libhekiselele kwindawo yophawu lwe-defocus ukufikelela kwi-emmetropia.
Ngokomzekelo, ukuba i-lens ye-concave ifakwe kwiliso elikhulayo ukunyanzelisa i-defocus engalunganga (oko kukuthi, ugxininiso lusemva kwe-retina), ukwenzela ukuba ugxininiso luwele kwi-retina, i-eyeball iya kukhula ngokukhawuleza, eya kukhuthaza. ukuphuhliswa kwe-myopia. Ukuba i-lens ye-convex igugile, iliso liya kufumana i-defocus enhle, izinga lokukhula kwe-eyeball liya kuncipha, kwaye liya kukhula libhekiselele kwi-hyperopia.
Indima yeMiqondiso ye-Defocus
Kufunyaniswa ukuba izibonakaliso ze-defocus ze-peripheral retina zidlala indima ebalulekileyo ekulawuleni ukukhula nokuphuhliswa kwe-eyeball, ngakumbi xa iimpawu ezibonakalayo eziphambili kunye ne-peripheral zingahambelani, izibonakaliso ze-peripheral ziya kulawula. Ngamanye amazwi, izibonakaliso ze-peripheral defocus zinempembelelo enkulu kulawulo lwe-emmetropization kune-central defocus state!
Abaphandi bakholelwa ukuba xa unxibe iiglasi zombono omnye eziqhelekileyo, ugxininiso olusembindini luboniswa kwiretina, kodwa ujoliso lweperipheral lubonakaliswa ngasemva kweretina. I-retina ye-peripheral ifumana isignali ye-hyperopic defocus, ebangela ukuba i-axis yamehlo ikhule kwaye i-myopia ibe nzulu.
Uyilo lweeglasi ze-defocus
Iiglasi ze-defocus ze-multi-point micro-transmission zenzelwe kwaye zenziwe ngokomgaqo we-peripheral myopia defocus, ukwenzela ukuba umfanekiso we-peripheral ungawela phambi kwe-retina. Ngeli xesha, ulwazi oludluliselwe kwi-eyeball luya kunciphisa ukukhula kwe-axis yamehlo. Izifundo ezahlukeneyo zibonise ukuba impembelelo yayo yokulawula i-myopia ihambelana kakuhle nexesha lokunxiba, kwaye kuyacetyiswa ukuba uyinxibe ngaphezu kweeyure ezili-12 ngosuku.
Uphando kumlinganiselo omkhulu we-optical defocus myopia lubonisa ukuba i-defocus ebona kude yemifanekiso ye-retinal ikhawuleza ukukhula kwe-eyeball, ekhokelela ekwandiseni i-eyeball kunye nokuphuhliswa kwe-myopia. Ngokwahlukileyo, i-defocus esondeleyo yemifanekiso ye-retinal inciphisa ukukhula kwe-eyeball. Indawo ekugxilwe kuyo ewela phambi kwe-retina ngenxa ye-defocus yokubona kufutshane inokucothisa ukukhula kwe-eyeball kodwa ayinakucutha ubude be-axial.
Kulutsha olune-axis yamehlo ubude obungadluli kwi-24mm, i-myopic defocus efanelekileyo edibeneyo yokuthintela kunye nokulawula imilinganiselo inokuqinisekisa ubude obuqhelekileyo be-axis yamehlo ekukhuleni. Nangona kunjalo, kubantu abanobude be-axis yamehlo ngaphezu kwe-24mm, ubude be-axial abunakucuthwa.
Imitha yokukhanya yelensi encinci kwiilensi zeglasi yenza imiqondiso ye-myopic defocus ngaphakathi kwiliso, ezingundoqo ekunciphiseni ukukhula kwe-myopia. Nangona kunjalo, ubukho beelensi ezincinci kwiilensi abuqinisekisi ukusebenza kakuhle; iilensi ezincinci kufuneka ziqale zisebenze ngokufanelekileyo. Ke ngoko, itekhnoloji yokuvelisa kunye nokucubungula iilensi ezincinci kwiilensi zikwavavanya ubugcisa kunye netekhnoloji yeenkampani zokuvelisa.
Uyilo lweMulti-Focus Micro-Lens
Ngokuvela "kwethiyori ye-defocus," abavelisi abakhulu beelensi bavelise iintlobo ezahlukeneyo zeelensi ze-defocus. Kwiminyaka emibini edlulileyo, iilensi ze-micro-lens defocus ezigxininisiweyo ezininzi ziye zasungulwa enye emva kwenye. Nangona zonke ziyi-multi-focus defocus lens, kukho umahluko omkhulu kuyilo kunye nenani leengongoma ekugxilwe kuzo.
1. Ukuqonda iMicro-Lens
Xa unxibe iindondo zamehlo zombono omnye, ukukhanya okuvela ngqo kude kunokuwela kwifovea, umbindi weretina. Nangona kunjalo, ukukhanya okuvela kwi-periphery, emva kokudlula kwi-lens enye, akufikeleli kwinqwelo efanayo ye-retina. Ekubeni i<em>retina inegophe, imifanekiso evela kumda weliso iwela ngasemva kweretina. Kweli nqanaba, ingqondo ikrelekrele kakhulu. Emva kokufumana le vuselelo, i-retina iya kuhamba ngethuku ukuya kumfanekiso wento, ibangele ukuba i-eyeball ikhule ngasemva, ibangela ukuba iqondo le-myopia likhule ngokuqhubekayo.
Kubalulekile ukuqaphela:
1. Iretina inomsebenzi wokukhulela emfanekisweni.
2. Ukuba umfanekiso we-cornea esembindini uwela kwindawo yeretina, ngelixa umfanekiso we-peripheral uwe emva kweretina, uya kubangela ukungaboni kakuhle.
Umsebenzi we-micro-lens kukusebenzisa umgaqo wokuguqula ukukhanya kunye ne-lens eyongeziweyo echanekileyo kwi-periphery ukutsala imifanekiso ye-peripheral phambi kwe-retina. Oku kuqinisekisa umbono ocacileyo ophakathi ngelixa uvumela imifanekiso ye-peripheral ukuba iwe kwindawo engaphambili ye-retina, idala i-traction kwi-retina ngeenjongo zokukhusela kunye nokulawula.
Kubalulekile ukuqaphela:
1. Ingaba i-peripheral defocus lens okanye i-multi-focus micro-lens, bobabini badonsa imifanekiso ye-peripheral phambi kwe-retina ukudala i-peripheral myopic defocus ngelixa igcina umbono ocacileyo ophakathi.
2. Isiphumo siyahluka ngokuxhomekeka kwisixa se-defocus yemifanekiso ye-peripheral ewela phambi kwe-retina.
2. Uyilo lweeLensi zeMicro-Concave
Kwimbonakalo yeelensi ze-micro-defocus ezininzi ezigxininisekileyo, sinokubona amanqaku amaninzi e-micro-defocus, aqulunqwe ngamalensi e-concave ngamnye. Ukuqwalasela iinkqubo zangoku zokuyila, iilensi ze-concave zinokwahlulwa zibe: iilensi ze-spherical zamandla enye, iilensi ezisezantsi ezingenayo i-micro-defocus, kunye ne-non-micro-defocus ephezulu (kunye nomehluko omkhulu kumandla phakathi kweziko kunye ne-periphery).
1. Umphumo wokucinga we-lens ephezulu ye-non-micro-defocus ihlangabezana nokulindela, ukubonelela ngolawulo olungcono lwe-myopia.
2. Ukufiphala kwe "image" engagxininisiyo: Iilensi eziphezulu ezingezizo-micro-defocus zidala imisebe yokukhanya engagxininisi kwaye ijike. Ukuba uphawu oluphambi kweretina lucace kakhulu, lunokukhethwa njengophawu oluphambili olubonakalayo lokujongwa kufutshane, okubangela ukuba imifanekiso elandelayo ingaboni kakuhle.
Izinto eziluncedo zokusebenzisa iilensi eziphezulu ezingezizo i-micro-defocus:
1. Ukudala ubunzima bokucinga ngengqondo ngokungenzi ingqwalasela, abantwana abayi kugxila ekusebenziseni i-micro-lens, kodwa baya kukhetha ngokuzimeleyo ukugxila kwiindawo ezicacileyo phakathi kwendawo ephakathi kunye ne-periphery.
2. Ukudala i-myopic defocus kunye nobubanzi kunye nobukhulu, okukhokelela ekutsaleni okunamandla kunye nokuphucula ukusebenza kokulawula i-myopia.
3. Iingozi zokuJonga ngeeLensi zeMicro-Concave
Eyona nto ixhalabisa kakhulu ngeelensi zokulawula i-myopia ezineelensi ezincinci kukuba abantwana banokugxila kwizinto ezisebenzisa iilensi ezincinci, ezinokuba neziphumo ezibi zilandelayo:
1. Ukukhethwa kokujonga kufutshane njengophawu oluphambili olubonakalayo
2. Ukungaboni kakuhle kwezinto
3. Ukunxiba ixesha elide kuchaphazela uhlengahlengiso
4. Okukhokelela kuhlengahlengiso olungaqhelekanga kunye nokudibanisa ukuhambelana
5. Ukulawulwa kwe-myopia engasebenziyo xa ujonga izinto ezikufutshane
Ukuququmbela
Ngeentlobo ezahlukeneyo zokugxila kwi-micro-defocus lens ezininzi, ukukhetha okulungileyo kuba ngumngeni. Kungakhathaliseki ukuba uyilo lwe-lens, injongo kukwenza umfanekiso ocacileyo kwi-retina ngelixa ugcina isignali ye-myopic defocus ezinzileyo kunye nezinzile phambi kwe-retina ukucotha ukuqhubela phambili kwe-myopia kunye ne-eye axial elongation. Ubuchwephesha, itekhnoloji, kunye nokuqinisekiswa komgangatho weelensi ze-micro-defocus ezigxile kwizinto ezininzi zibalulekile. Iilensi ezikumgangatho ophantsi azipheleli nje ekusileleni ukucothisa ukuqhubeka kwe-myopia kunye nobude be-axial kodwa ukunxiba ixesha elide kunokuchaphazela uhlengahlengiso, okukhokelela kungqamaniso olungaqhelekanga lokuhlangana.
Ixesha lokuposa: Jun-21-2024