Tsanangudzo yeDefocus Signal
"Defocus" chiratidzo chakakosha chekuona chinogona kuchinja maitiro ekukura kwemboni yeziso iri kukura. Kana kukurudzira defocus kukaitwa nekupfeka malenzi panguva yekukura kwemaziso, ziso richakura rakananga kunzvimbo yechiratidzo che defocus kuti riwane emmetropia.
Semuenzaniso, kana lenzi ine concave ikapfekwa paziso riri kukura kuti iite kuti pave negative defocus (ndiko kuti, focus iri kuseri kwe retina), kuti focus iwire pa retina, ziso richakura nekukurumidza, izvo zvichakurudzira kukura kwe myopia. Kana lenzi ine convex ikapfekwa, ziso richawana positive defocus, mwero wekukura kweziso uchaderera, uye richakura kusvika pa hyperopia.
Basa reZviratidzo zveDefocus
Zvakaonekwa kuti zviratidzo zve defocus zve peripheral retina zvine basa guru mukudzora kukura nekukura kwemboni yeziso, kunyanya kana zviratidzo zvepakati nepamativi zvisingawirirane, zviratidzo zve peripheral zvinotonga. Nemamwe mashoko, zviratidzo zve peripheral defocus zvine simba guru pakudzora emmetropization kupfuura mamiriro e central defocus!
Vaongorori vanotenda kuti kana vakapfeka magirazi ekuona kamwe chete, chinhu chikuru chinoratidzwa pa retina, asi chinhu chiri kuseri kwe retina chinoonekwa seri kwe retina. Retina yekunze inogamuchira chiratidzo che hyperopic defocus, chinoita kuti eye axis ikure uye myopia iwedzere kudzika.
Dhizaini yemagirazi e defocus
Magirazi ekubvisa magirazi e "multi-point micro-transmission defocus" akagadzirwa uye anogadzirwa zvichienderana nepfungwa ye "peripheral myopia defocus", kuitira kuti mufananidzo we "peripheral" ugone kuwira pamberi pe retina. Panguva ino, ruzivo rwunotumirwa kubhora reziso ruchaderedza kukura kwe "eye axis". Zvidzidzo zvakasiyana zvakaratidza kuti mhedzisiro yaro yekudzora ma "myopia" inoenderana nenguva yekupfeka, uye zvinokurudzirwa kuipfeka kwemaawa anopfuura gumi nemaviri pazuva.
Ongororo yakawanda ye optical defocus myopia inoratidza kuti defocus yemifananidzo ye retina inokurumidza kukura kwemaziso, zvichikonzera kureba kwemaziso uye kukura kwe myopia. Kusiyana neizvi, defocus yemifananidzo ye retina inoderedza kukura kwemaziso. Nzvimbo yekutarisa inowira pamberi pe retina nekuda kwe defocus yekuona pedyo inogona kunonotsa kukura kwemaziso asi haigone kupfupisa kureba kwe axial.
Kune vechidiki vane kureba kwe axis yeziso isingapfuure 24mm, nzira dzakakodzera dzekudzivirira nekudzivirira myopic defocus dzinogona kuve nechokwadi chekuti axis yeziso inoreba zvakanaka kana munhu akura. Zvisinei, kune vanhu vane kureba kwe axis yeziso inodarika 24mm, kureba kwe axis hakugone kupfupikiswa.
Mwenje we micro-lens pamagirazi emaziso unoumba zviratidzo zve myopic defocus mukati meziso, izvo zvinokosha pakuderedza kukura kwe myopia. Zvisinei, kuvapo kwema micro-lens pamalenzi hazvirevi kuti zvinobudirira; ma micro-lens anofanira kutanga ashanda zvakanaka. Nokudaro, tekinoroji yekugadzira nekugadzirisa ma micro-lens pamalenzi inoedzawo hunyanzvi netekinoroji yemakambani ekugadzira.
Dhizaini yeMagirazi Madiki Akawanda Anotarisa Zvikuru
Nekubuda kwe "defocus theory," vagadziri vakuru vemalenzi vakagadzira marudzi akasiyana-siyana emalenzi edefocus. Mumakore maviri apfuura, malenzi edefocus e multi-focus micro-lens akatangwawo rimwe mushure merimwe. Kunyangwe ese ari malenzi e defocus e multi-focus, pane musiyano mukuru mukugadzirwa uye huwandu hwenzvimbo dzekutarisa.
1. Kunzwisisa Magirazi Madiki
Kana wakapfeka magirazi ekuona kamwe chete, chiedza chinobva kure chinogona kuwira pa fovea, chikamu chepakati che retina. Zvisinei, chiedza chinobva kumativi ose, mushure mekupfuura nepa lenzi imwe chete, hachisviki panzvimbo imwechete ye retina. Sezvo retina ine curvature, mifananidzo inobva kumativi ose inowira kumashure kwe retina. Panguva ino, uropi hwakangwara zvikuru. Paunenge uchigamuchira simba iri, retina inongoerekana yaenda kumufananidzo wechinhu, zvichiita kuti ziso rikure kumashure, zvichiita kuti myopia irambe ichikwira.
Zvakakosha kucherechedza:
1. Retina ine basa rekukura ichienda kumufananidzo.
2. Kana mufananidzo we central cornea ukawira panzvimbo ye retina, nepo mufananidzo we peripheral ukawira kumashure kwe retina, zvichaita kuti munhu aone kure.
Basa rema micro-lenses nderekushandisa musimboti wekubatanidza chiedza ne lenzi yakawedzerwa iri mumucheto kuti ikweve mifananidzo yepakati kumberi kwe retina. Izvi zvinoita kuti mifananidzo yepakati ionekwe zvakanaka ukuwo zvichibvumira mifananidzo yepakati kuti iwire kumberi kwe retina, zvichiita kuti retina ikwanise kubatwa nekudzivirira uye kudzora.
Zvakakosha kucherechedza:
1. Ingava lenzi ye peripheral defocus kana kuti lenzi ye multi-focus micro-lens, ese ari maviri anodhonza mifananidzo ye peripheral kumberi kwe retina kuti agadzire peripheral myopic defocus ukuwo achichengetedza kuona kwakajeka pakati.
2. Mhedzisiro yacho inosiyana zvichienderana nehuwandu hwekubviswa kwekutarisa kwemifananidzo yekunze inowira pamberi pe retina.
2. Dhizaini yeMagirazi Madiki Akakombama
Muchitarisiko chemalenzi e-micro-defocus akawanda, tinogona kuona mapoinzi akawanda e-micro-defocus, ayo anoumbwa nemalenzi ega ega akakombama. Tichifunga nezvemaitiro ekugadzira aripo iye zvino, malenzi e-concave anogona kukamurwa kuita: malenzi e-single power spherical, malenzi e-non-micro-defocus akaderera, uye malenzi e-non-micro-defocus akakwirira (ane musiyano mukuru wesimba pakati pepakati nepamucheto).
1. Kuonekwa kwemagirazi asina kusimba zvakanyanya (non-micro-defocus lenses) kunosangana nezvinodiwa, zvichiita kuti pave nekudzora kuri nani myopia.
2. Kusanyatsojeka kwemifananidzo isina kutarisika: Magirazi akakwirira asina kutarisika anogadzira chiedza chisingatarise uye chinopatsanurwa. Kana chiratidzo chiri pamberi pe retina chakajeka zvakanyanya, chinogona kusarudzwa sechiratidzo chikuru chekuona chiri pedyo, zvichiita kuti mifananidzo inotevera ive isina kutarisika zviri kure.
Zvakanakira kushandisa malenzi asingashandisi micro-defocus zvakanyanya:
1. Zvichikonzera matambudziko ekuona mifananidzo yeuropi nekusaita kuti pfungwa dzitarise, vana havazotarise vachishandisa ma micro-lenses, asi vanozosarudza vega kutarisa zvikamu zvakajeka zviri pakati penzvimbo yepakati nekunze.
2. Kugadzira myopic defocus ine upamhi uye ukobvu, zvichiita kuti munhu akwanise kubata myopia zvakasimba uye kuti akwanise kudzora myopia zvakanaka.
3. Njodzi dzekuona uchishandisa Micro-Concave Lenses
Dambudziko guru rine magirazi ekudzivirira myopia ane magirazi madiki nderekuti vana vanogona kutarisa pazvinhu vachishandisa magirazi madiki, izvo zvinogona kuva nemigumisiro yakaipa inotevera:
1. Kusarudzwa kwekuona pedyo sechiratidzo chikuru chekuona
2. Kuona zvinhu zvisina kujeka
3. Kupfeka kwenguva refu kunokanganisa kugadziriswa
4. Zvinoita kuti pave nekugadziriswa kusingawanzoitiki uye kuenzaniswa kwekubatana
5. Kusashanda zvakanaka kwekutonga myopia pakutarisa zvinhu zviri pedyo
Mukupedzisa
Nekuwedzera kuri kuita malenzi e-micro-defocus akawanda, kusarudza rakakodzera kunova dambudziko. Pasinei nekugadzirwa kwelenzi, chinangwa ndechekugadzira mufananidzo wakajeka paretina uku uchichengetedza chiratidzo che-myopic defocus chakasimba pamberi peretina kuti kuderedze kufambira mberi kwe-myopia uye elongation yemaziso. Unyanzvi, tekinoroji, uye kuvimbiswa kwemhando yemalenzi e-micro-defocus akawanda zvakakosha. Malenzi asina kunaka haangogumiri pakunonoka kufambira mberi kwe-myopia uye elongation yemaziso asi kupfeka kwenguva refu kunogona kukanganisa kugadziriswa, zvichikonzera kusangana kusina kujairika.
Nguva yekutumira: Chikumi-21-2024