Rudzi rumwe norumwe pasi pano rine ruvara rukuru rwebvudzi, ganda uye meso. Semuenzaniso: pakati pevagari veLatin America, 80-85% yevanhu, Ukraine neRussia - 50% ne30% - inogona kuwanikwa maronda meso. Iyo yakajeka ganda revabereki, iyo yakawanda mukana wekuonekwa kwebhuruvara uye mavara machena.
Mikana yevara reziso mumwana
Kazhinji kacho ruvara rwemaziso evabereki nevana runobatana, asi kune zvisizvo. Zvinhu zvakadaro zvinotsanangurwa nezvakasiyana-siyana zviri mu melanin - iyo pigment inokonzera kuisa ganda, vhudzi uye iris. Muvanhu vane meso uye maziso, iyo pigment yakanyanya kuduku, hapana albinos zvachose. Rudzi ruvara rwemaziso ndiwo mutezo weropa, izvo zvisingafukidzwi ne pigment. Sei chivara chine rima chinowanikwa kakawanda? Genetics inoratidza kuti maziso ane mavara ane mavara makuru, bhuruu uye gris zvinoderedza. Saka, muvabereki vane mavara-mavara, maziso omwana anotaridzika mavara ane ruvara, uye mumamu-maziso mumas and daddies, mwana ane maziso akasviba haagoni kuberekwa.
Munhu angatsanangurira sei kuti ruvara rwemaziso emwana achangoberekwa nguva dzose rinowanzofanana? Izvi zvinokonzerwa nebasa remasero melanocyte. Vashandi vaduku havaiti kuti vatange kubudisa melanin. Zvishoma nezvishoma zvinowedzera, iyo pigment inoita kuti iris yemaziso muine mavara ane mavara. Kune vamwe vana hutu hunotanga kuwedzera kuwedzera, uye nehafu yegore mwana anotarisa pasi rose ane mavara machena machena. Mune vamwe, pane zvinopesana, zvinosviba. Yeuka kuti maziso echeche anogona kusviba nenguva. Asi shandura ruvara rune ruvara rwebhuruu kusvika kune grey kana bhuruu - kwete. Chimwe chinhu chisina kukodzera mubasa re-melanocytes.
Kukanganisa kwakadaro kwekugadzira pigment hakushamisi, uye inofanira kuchenjerera vabereki. Heterochromia - kana rimwe ziso rakatsvuka zvakanyanya kupfuura rechipiri, rinogona kuzadza (ziso rose) kana kuti chikamu (chikamu kana chikamu cheIris). Dzimwe nguva munhu anogara ane rumwe ruvara rwemaziso muupenyu hwake hwose, achifunga zvakanaka, asi zviitiko apo kukanganisa kwakadaro kunoguma nehutachiona hazvisi zvisizvo. Nokudaro, vabereki avo vakacherechedza kubviswa kwemaziso emwana wavo vanofanira kunge vachichiratidzira pakarepo kune ophthalmologist.
Vana vanochinja rini maziso avo?
Mumazuva matatu ekutanga mushure mokuberekwa, kuchinja kwemuvara we iris hakufaniri kutarisirwa. Kazhinji kazhinji, kuchinja kwekupedzisira kunoitika mugore rekutanga rehupenyu. Mune vamwe vana - mumwedzi kubva pamwedzi 3 kusvikira kumwedzi 6, mune vamwe-kubva pamwedzi 9 kusvika ku12. Mhuka yemaziso inogona kuchinja kusina maturo, kuwana ruvara rwekupedzisira nemakore matatu kana mana.
Unoziva sei ruvara rwemaziso emwana?
Kuti aone ruvara rwemaziso emwana wacho, masayendisiti masayendisiti akagadzira tafura chaiye, iyo inoratidza chiyero chezvakaitika mumamiriro ezvinhu akapiwa.
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Zvisinei, hapana nyanzvi inokwanisa kutaura ne 99% chechokwadi chaiyo chaiyo iyo iris ichave iri muchechecheche. Uyezve, kana zviitiko zvekuchinja kana kuvhiringidzwa kwebasa re-melanocyte, genetics haina simba.