Incazelo Yesiginali ye-Defocus
I-"Defocus" isignali yempendulo ebalulekile ebonakalayo engashintsha iphethini yokukhula yenhlamvu yeso ekhulayo.Uma ukukhuthazwa kwe-defocus kunikezwa ngokugqoka amalensi ngesikhathi sokuthuthukiswa kweso, iso lizothuthukela endaweni yesignali ye-defocus ukuze kuzuzwe i-emmetropia.
![Susa ukugxila](http://www.borislens.com/uploads/Defocus.jpg)
Isibonelo, uma i-concave lens igqokwa esweni elikhulayo ukuze ifake i-defocus engalungile (okungukuthi, ukugxila kungemuva kwe-retina), ukuze ukugxila kuwele ku-retina, inhlamvu yeso izokhula ngokushesha, okuzothuthukisa ukuthuthukiswa kwe-myopia.Uma i-lens ye-convex igqokwe, iso lizothola i-defocus enhle, izinga lokukhula kwe-eyeball lizohamba kancane, futhi lizothuthukela ku-hyperopia.
![I-Defocus1](http://www.borislens.com/uploads/Defocus1.jpg)
Iqhaza Lezimpawu Ze-Defocus
Kutholakala ukuthi amasignali e-defocus we-peripheral retina adlala indima ebalulekile ekulawuleni ukukhula nokuthuthukiswa kwe-eyeball, ikakhulukazi lapho amasignali okubukwayo aphakathi nendawo kanye ne-peripheral angahambisani, amasignali e-peripheral azobusa.Ngamanye amazwi, amasiginali we-peripheral defocus anomthelela omkhulu ekulawuleni i-emmetropization kunesimo esimaphakathi se-defocus!
Abacwaningi bakholelwa ukuthi uma ugqoke izibuko ezivamile zokubona okukodwa, ukugxila okumaphakathi kuthathwa ku-retina, kodwa ukugxila kwe-peripheral kuthathwa ngemuva kwe-retina.I-peripheral retina ithola isignali ye-hyperopic defocus, eyenza i-eksisi yamehlo ikhule futhi i-myopia ijule.
Umklamo wezibuko ze-defocus
Izingilazi ze-multi-point micro-transmission defocus ziklanywa futhi zenziwa ngokuvumelana nesimiso se-peripheral myopia defocus, ukuze isithombe se-peripheral siwele phambi kwe-retina.Ngalesi sikhathi, ulwazi oludluliselwa ku-eyeball luzonciphisa ukukhula kwe-axis yamehlo.Ucwaningo oluhlukene lubonise ukuthi umphumela wayo wokulawula i-myopia uhlotshaniswa kahle nesikhathi sokugqoka, futhi kunconywa ukuthi uyigqoke amahora angaphezu kwangu-12 ngosuku.
![izibuko ze-defocus](http://www.borislens.com/uploads/defocus-glasses.jpg)
Ucwaningo ngesilinganiso esikhulu se-optical defocus myopia lubonisa ukuthi i-defocus ebona kude yezithombe ze-retina isheshisa ukukhula kwebhola leso, okuholela ekwelulweni kwebhola leso kanye nokukhula kwe-myopia.Ngokuphambene, i-defocus yokubona eduze kwezithombe ze-retina ibambezela ukukhula kwenhlamvu yeso.Indawo okugxilwe kuyo ewela phambi kwe-retina ngenxa yokungaboni kahle eduze ingabambezela ukukhula kwenhlamvu yeso kodwa ayikwazi ukufinyeza ubude be-axial.
Entsha enobude be-eksisi yeso obungeqi ku-24mm, i-myopic defocus ehlanganisiwe yokuvimbela nokulawula ingaqinisekisa ubude be-eksisi yeso lapho umuntu esekhulile.Kodwa-ke, kubantu abanobude be-eksisi yeso obudlula u-24mm, ubude be-axial abukwazi ukufinyezwa.
Imishayo yokukhanya yamalensi amancanyana kumalensi engilazi yamehlo yenza amasignali e-myopic defocus ngaphakathi kweso, okuwukhiye ekudambiseni ukukhula kwe-myopia.Nokho, ukuba khona kwamalensi amancane kumalensi akuqinisekisi ukusebenza kahle;ama-micro-lens kumele aqale asebenze ngempumelelo.Ngakho-ke, ubuchwepheshe bokukhiqiza nokucubungula amalensi amancane kumalensi nawo avivinya ubuciko nobuchwepheshe bezinkampani ezikhiqizayo.
![izibuko ze-defocus1](http://www.borislens.com/uploads/defocus-glasses1.jpg)
Idizayini yama-Multi-Focus Micro-Lens
Ngokuvela "kwethiyori ye-defocus," abakhiqizi bamalensi abakhulu bakhiqize izinhlobo ezahlukahlukene zamalensi e-defocus.Eminyakeni emibili eyedlule, amalensi e-multi-focus micro-lens defocus nawo aqalisiwe ngokulandelana kwawo.Nakuba wonke engamalensi e-multi-focus defocus, kunomehluko omkhulu ekwakhiweni kanye nenani lamaphoyinti okugxilwa kuwo.
![I-Multi-Focus Micro-Lens](http://www.borislens.com/uploads/Multi-Focus-Micro-Lenses.jpg)
1. Ukuqonda ama-Micro-Lens
Lapho ugqoke izibuko zamehlo ezibona kanye, ukukhanya okuvela kude kungawela ku-fovea, ingxenye emaphakathi ye-retina.Nokho, ukukhanya okuvela endaweni ezungezile, ngemva kokudlula ilensi eyodwa, akufinyeleli endizeni efanayo ye-retina.Njengoba i-retina ine-curvature, izithombe ezisuka endaweni ezungezile ziwela ngemva kwe-retina.Kuleli qophelo, ubuchopho buhlakaniphe kakhulu.Lapho ithola lesi sikhuthazi, i-retina izohamba ngokuzenzakalelayo iye emfanekisweni wento, ibangele ukuthi inhlamvu yeso ikhule ihlehle, okubangele izinga le-myopia ukuthi likhule ngokuqhubekayo.
Kubalulekile ukuqaphela:
1. I-retina inomsebenzi wokukhulela esithombeni.
2. Uma isithombe se-cornea emaphakathi siwela endaweni ye-retina, kuyilapho isithombe se-peripheral siwela ngemva kwe-retina, siyobangela ukungaboni kahle kokubona kude.
![Amalensi amancane](http://www.borislens.com/uploads/Micro-Lenses.jpg)
Umsebenzi wamalensi amancanyana ukusebenzisa umgomo wokuguqula ukukhanya ngelensi ephozithivu eyengeziwe endaweni ukudonsa izithombe eziwumngcele ukuya ngaphambili kweretina.Lokhu kuqinisekisa ukubona okumaphakathi okucacile kuyilapho kuvumela izithombe eziseceleni ukuba ziwe engxenyeni engaphambili ye-retina, okudala ukudonsa ku-retina ngezinjongo zokuvimbela nokulawula.
Kubalulekile ukuqaphela:
1. Kungakhathaliseki ukuthi i-peripheral defocus lens noma i-multi-focus micro-lens, zombili zidonsa izithombe ze-peripheral ngaphambi kwe-retina ukuze zenze i-peripheral myopic defocus kuyilapho igcina ukubona okucacile okumaphakathi.
2. Umthelela uyahlukahluka kuye ngenani le-defocus yezithombe ezizungezile eziwela ngaphambili kwe-retina.
2. Idizayini yamalensi ama-Micro-Concave
Ekubukeni kwamalensi e-micro-defocus agxile kakhulu, singabona amaphuzu amaningi e-micro-defocus, akhiwe ngamalensi angama-concave angawodwana.Uma kucatshangelwa izinqubo zamanje zokuklama, amalensi e-concave angahlukaniswa abe: amalensi ayindilinga amandla angawodwa, amalensi aphansi angewona ama-micro-defocus, namalensi aphezulu angewona ama-micro-defocus (nomehluko omkhulu wamandla phakathi kwesikhungo nendawo ezungezile).
1. Umthelela wokuthwebula amalensi aphezulu angewona ama-micro-defocus uhlangabezana nokulindelwe, uhlinzeka ngokulawula okungcono kwe-myopia.
2. Ukufiphazwa "kwezithombe" ezingagxilile: Amalensi aphezulu angewona ama-micro-defocus adala imisebe yokukhanya engagxili futhi ephambukayo.Uma isignali ephambi kwe-retina icace kakhulu, ingase ikhethwe njengesignali yokubuka eyinhloko ukuze ibukwe eduze, okubangele ukuthi izithombe ezilandelayo zingagxili ekuboneni kude.
Izinzuzo zokusebenzisa amalensi aphezulu angewona ama-micro-defocus:
1. Ukudala ubunzima be-imaging for the brain by not make focus, izingane ngeke zigxile ekusebenziseni ama-micro-lens, kodwa zizokhetha ngokuzenzakalelayo ukugxila ezingxenyeni ezicacile phakathi kwendawo emaphakathi nendawo ezungezile.
2. Ukudala i-myopic defocus enobubanzi nogqinsi, okuholela ekudonsekeni okuqinile kanye nokusebenza okuthuthukisiwe kokulawula i-myopia.
3. Izingozi Zokubuka Ngama-Micro-Concave Lens
Ukukhathazeka okukhulu ngamalensi okulawula i-myopia anama-micro-lens ukuthi izingane zingase zigxile ezintweni ezisebenzisa amalensi amancane, angaba nemiphumela emibi elandelayo:
1. Ukukhethwa kokubuka eduze njengesignali ebonakalayo eyinhloko
2. Ukungaboni kahle kwezinto
3. Ukugqoka isikhathi eside kuthinta ukulungiswa
4. Okuholela ekulungiseni okungavamile nasekufaniseni ukuhlangana
5. Ukulawulwa kwe-myopia okungasebenzi lapho ubuka izinto eziseduze
Ekuphetheni
Ngezinhlobonhlobo ezikhulayo zamalensi e-multi-focus micro-defocus, ukukhetha efanele kuba inselele.Kungakhathalekile idizayini yelensi, umgomo uwukwenza isithombe esicacile ku-retina kuyilapho ugcina isignali ye-myopic defocus eqhubekayo futhi ezinzile phambi kwe-retina ukuze kwehliswe ukuqhubekela phambili kwe-myopia kanye ne-eye axial elongation.Ubuciko, ubuchwepheshe, kanye nokuqinisekiswa kwekhwalithi yamalensi e-multi-focus micro-defocus kubalulekile.Amalensi ekhwalithi engeyinhle awehluleki nje kuphela ukwehlisa isivinini se-myopia nokunwebeka kwe-axial kodwa ukugqoka isikhathi eside kungase kuthinte ukulungiswa, okuholela ekufaniseni ukuhlangana okungavamile.
![amalensi e-micro-defocus agxile kakhulu](http://www.borislens.com/uploads/multi-focus-micro-defocus-lenses.jpg)
Isikhathi sokuthumela: Jun-21-2024