Ta yaya eyeball.

Eyeball, ko da sashen gani, duk da gajeren size, yana da matukar hadaddun kwayoyin tsarin. Kuna aikin, wannan jiki yana cikin siffar wani Sphere, wanda ba quite cikakku, kamar yadda ta bayyane gaban rabo ne mafi curvature fiye da boye daga raya surface. Wannan hujja kayyade size da kuma bambancin da idanu a cikin daban-daban kwatance. Saboda da convexity na cornea agara-na baya jiki na most size. A kan talakawan, da lafiya adult mutum, sai ya kusa zuwa 24 mm. Mai gangara kuma a tsaye axis kamar m: da talakawan size na mai gangara axis na ido ne 23,6 mm da 23,3 mm a tsaye.

A tsarin da eyeball

Gabar da hangen nesa, akwai uku da manyan harsashi cewa yin jinsin ayyuka.

1. External ko fibrous daina kai hare hare. Yana gano sassa biyu, waxanda suke da quite jũna anatomically. The most ɓangare na fibrous zilaikar nasa sclera, ko Tunica albuginea, da kuma sauran - da cornea. A sclera shi ne cikakken maras m masana'anta, wanda yana da whitish ya dafa. Daidai saboda su launi, eyeball, musamman da opaque rabo daga furotin da aka kira. A asibiti yi, a matsayin sclera iya gane daban-daban pathological yanayin da faruwa a cikin ido da kuma a cikin jiki a matsayin dukan. Saboda haka, redness na eyeball iya nuna m kumburi a cikin sashen hangen nesa: conjunctivitis, keratitis, uveitis, da dai sauransu A yellowing Tunica albuginea tsaye ba da shaida na cutar hanta - Hepatitis. Eyeball, wanda ya nuna da gaba da kuma cornea bayyana a cikin wannan wuri fentin a launin ruwan kasa, kore ko blue. Duk da haka, wannan ba cornea da Iris ne a bayyane ta hanyar da shi. A cornea shi ne cikakken colorless kuma m, akwai wani jini, kawai tari na jijiya endings, kyale shi ya zama mafi m sashi na jiki. Idan eyeball aka wakilta a matsayin mai yawan sassa na ta daina kai hare hare fibrous, sa'an nan da cornea lissafinsu kasa da 16%.
2. Average, ko choroid. Shi ne m zuwa fibrous, amma ba a gaba ɗayansa, amma kawai a cikin scleral part. Ina sclera da ke shiga cikin cornea, jijiyoyin bugun gini hanya an rabu da shi, kuma an spaced daga cornea. A tsakiyar harsashi rarrabe sassa uku: da Iris, ciliary (ciliary) jiki , da kuma choroid. Iris hidima a matsayin diaphragm, wanda shirya luminous juyi kai zurfi a cikin idanunsa, ya svetovosprinimayuschim Tsarin. kayyadewa aiki daukan da almajiri, wanda zai iya fadada a lokacin da haske rashi kuma kunkuntar - a wuce haddi. A ciliary jiki zama dole domin samar da akai intraocular ruwa ake bukata domin ciyar da ido, na rike da shi sautin. A choroid, ko choroidal, wakilta jijiyoyin bugun gini cibiyar sadarwa samar da da ciki Tsarin da ido.
3. Ciki ko akan tantanin ido. Wannan shi ne mafi muhimmanci na sashen hangen nesa da amsa ga haske da kuma watsa ta samu gani bayanai a kan su kwakwalwa cortical Tsarin. Akan tantanin ido - bakin ciki sosai, kuma m nama, wanda mafi yawa ana gano biyu main yankunan: da ciliary wanda yana da matuƙar bambancin Kwayoyin, kuma Tantancewar aiki a cikin abin da wadannan Kwayoyin ne. Su rabuwa (jagged line) za a iya gani a cikin shakka daga wani bincike kamar tsikloskopiya lokacin da yayi nazari fundus.

A eyeball baya bawo a ciki a vitreous, wanda ya ba shi wani halayyar taso siffar da aka hannu a cikin refraction da ruwan tabarau, wanda aka hannu a rungumar matakai da refraction haske bim.