Munyori: Virginia Floyd
Zuva Rekusika: 6 Nyamavhuvhu 2021
Gadziridza Zuva: 10 Zvita 2024
Anonim
Ndava Kuona
Vhidhiyo: Ndava Kuona

Zvemukati

Tamba vhidhiyo yehutano: //medlineplus.gov/ency/videos/mov/200013_eng.mp4Chii ichi? Tamba vhidhiyo yehutano nerondedzero yekuteerera: //medlineplus.gov/ency/videos/mov/200013_eng_ad.mp4

Mhedziso

Chiratidzo ndiyo pfungwa yakanyanya kune vakawanda vanhu vane maziso.

Nhengo yekuona iziso. Funga nezvazvo sechinhu chisina kujairika, chine mhango chinotora muchiedza ndokuchishandurira mumifananidzo.Kana tikakudza ziso uye totarisa mukati maro, tinogona kuona kuti zvinoitwa sei.

Mukati meziso pane akasiyana masisitimu ari kushanda pamwechete kugadzira mufananidzo uropi hunogona kunzwisisa. Pakati peiyi pane cornea, yakajeka dome-senge chimiro chinovhara iris kana chikamu chine ruvara cheziso, lens yakananga pasi payo, uye iyo retina, iyo inotenderera kumashure kweziso. Iyo retina ine matete matete ezvinyoro zvisinganzwisisike.

Iyi kenduru inogona kutibatsira kuti tinzwisise kuti ziso rinotora sei mifananidzo uye wozoitumira kuuropi, Chekutanga, mwenje wemwenje unopfuura nepakona. Sezvazvinoita, yakakotama, kana kuburitswa, pane iyo lens. Sezvo mwenje unopfuura nepakati pe lens, yakakombama kechipiri. Chekupedzisira, inosvika patestina panogadzirwa mufananidzo.


Uku kukombama zvakapetwa, zvakadaro, kwakadzosera chifananidzo uye kuchichinjisa kumusoro. Kana ndiko kwaive kupera kwenyaya, nyika yaizogara ichionekwa yakapesana pasi. Neraki, mufananidzo wacho wakashandurwa kurudyi kumusoro muuropi.

Izvi zvisati zvaitika, chifananidzo chinoda kufamba senge zvishuwo padhuze neiyo optic nerve uye wopinda muuropi hwe occipital lobe Kana chifananidzo chikaumbika ipapo, chinozowona maonero acho chaiwo.

Iye zvino ngatitarisei mamiriro maviri akajairika anokonzeresa kuona. Chimiro cheziso chakakosha kuchengetedza zvinhu mukutarisa. Nemaonero akajairwa, mwenje unotarisisa chaizvo pane iro retina panzvimbo inonzi nzvimbo yekutarisa.

Asi chii chinoitika kana ziso rakareba kupfuura zvakajairwa? Iyo yakareba iyo ziso, iyo yakareba chinhambwe iripo pakati pe lens uye retina. Asi iyo cornea uye lens zvichiri kukombama mwenje nenzira imwechete. Izvi zvinoreva kuti iyo yekutarisisa ichave kumwe kunhu pamberi pe retina kwete pairi.

Izvi zvinoita kuti zvinetse kuona zvinhu zviri kure. Munhu ane ziso refu anonzi ari kuona pedyo. Magirazi ane concave lenses anogona kugadzirisa padyo kuona.


Iyo lens inowedzera bani rechiedza rinouya kuburikidza necnea. Izvo zvinosundira iyo yakatarisana nzvimbo kudzoka kuretina.

Kufanoona zviri kure kungori kwakapesana. Kureba kweziso kupfupika. Kana izvozvo zvikaitika, iyo yekutarisa iri kumashure kweiyo retina. Saka zvinonetsa kuona zvinhu zviri padhuze.

Magirazi ane convex lenses anotetepa bani rechiedza. Kuderedza mwenje uchipfuura nepakona kunofambisa nzvimbo yekudzokera pa retina uye kunogona kugadzirisa kuona.

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