The Manyiminya hurongwa ziso muvanhu

Maumbirwe kwevanhu ziso rinenge riri idenderedzwa. Avhareji dhayamita pamusoro nomuviri anenge maviri nehafu masendimita.

Anatomy womunhu ziso

Kunze muviri wakakomberedzwa membranes matatu.

Chokutanga, simba uye vanachandagwinyira (kwokunze) inonzi sclera (kana mapuroteni deko). It anodzivirira pamusoro zvokuimba kukuvara. Pamberi nzvimbo sclera yatovapo yakajeka uye anonzi ari cornea (cornea). Musi yakasarira pemvura ziso opaque uye akashevedza mapuroteni (a chena ruvara).

Pakazosvika sclera mukati adjoins ari choroid. It achiumbwa ane panzvimbo kunzwisisa plexus midziyo vachigovera ropa ziso. goko ichi anova Iris, kuti yechitema yakasiyana vanhu nenzira yakasiyana ruvara uye kuva buri pakati. inonzi mboni. Iris anokwanisa deform uye kushandura dhayamita ari mudzidzi. Changes akaita pachiyero hunenge uye vakarondedzera chitsama chiedza kupinda ziso. In sechiedza mboni nhete kuti millimeters maviri, pamwechete shoma nhau kuwedzerwa dzimwe nguva kusvika millimeters masere.

Mune choroid womukati the retina ndiye chikamu (the the retina). Rinotaura zvose zviri ocular fundus, kunze kwenzvimbo mberi. The optic tsinga, chinopa kubatana tambo ane ziso, chikamu the retina kurutivi rwemberi. The goko ine chaizvoizvo kuti mapazi tsinga fibers, uye tsinga harinzwi. Saka kuumbwa hypersensitive pechiso ziso.

Pakati cornea uye iris Anterior kamuri yakazara ine mwando kamuri.

Zvakananga shure mboni ndiye izvo. Iye inomiririrwa segirazi kwakavharwa nenyama muviri une chimiro biconvex izvo. Pemvura izvo angava akasiyana curvature zvichienderana dzokupisa tsandanyama zvakakodzera kumativi ose.

Ukatora curvature kuti chinoratidza rinoitwa kuunza mufananidzo zvinhu zvakasiyana marefu, zvakajeka inonyatsoziva pemvura rukoko of the retina. The pamusoro muitiro unonzi pokugara. Ocular mhango seri izvo yakazara ine segirazi gelatinous zvokunwa. Anoumba ari vitreous.

The Manyiminya hurongwa ziso hwakafanana runoenzanirana nemamiriro kamera. The gogorosi anoita somunhu izvo pavanoparidza Anterior kamuri uye vitreous muviri, ane refractive ehupfumi.

Chifananidzo chacho projected padenga photosensitive pechiso the retina. Hasha kunoitwa pachishandiswa pokugara.

The Manyiminya Hurongwa kunosanganisira maziso (uyewo kamera hurongwa) diaphragm anokwanisa kuchinja dhayamita. Basa reDare mboni aperture.

Kugona kuti pekugara pamusoro the retina unobereka unopinza mifananidzo zvinhu riri pana siyana akareba.

Kana vakazorora, ari Manyiminya gadziriro ziso unokubvumira effortlessly pekugara kunzwisisa zvinhu kure (nyeredzi, somuenzaniso). With tsandanyama simba, kuita kuti Zvakawanikwa izvo curvature uye vasanyanye kwayo pakureba zvatichiri optic muviri anoita arodzwe pamusoro achida chinhu.

The Manyiminya Tsika ziso nezera kuchinja. Nekuchembera kuti kwakaderedza kugona akkommodasie. Zviduku kure uko Manyiminya hurongwa ziso anogona kupa zvakajeka mufananidzo neeSultan kubva gumi (pasi pemakore makumi maviri) kusvika makumi maviri masendimita (kusvika makumi mana). With zera pfupi daro inowedzerawo namakumi masendimita uye zvakawanda - vakava zera Kuona zviri mberi.

The Manyiminya Tsika ziso rine pfungwa, kupfuura uhwo nemwaranzi anenge asina refracted. Pfungwa iyi riri mukati izvo, pedyo rwemberi ndege yayo.