Dareemaha iftiinka, qaab-dhismeedkooda iyo shaqada

dareemaha iftiinka iska leh dareemayaasha takhasus sare leh iyo qaab-dhismeedka ekaan kiliyaha cerebral. Hawlaha dareemaha iftiinka waa in gudbinta falalkooda dareemayaasha, helay markii loo feydo ku meersan iftiinka kala duwan ka ileyska xarunta muuqaal of kiliyaha maskaxda.

Neerfayaasha Optic-DHISMEEDKA.

Dunta dareemayaasha ee ileyska isku jira waxaa hal dareemayaasha optic. Waxay ka kooban tahay afar waaxaha: intraocular, vnutrikanaltsevoy, intraorbital iyo intracranial. intraocular ka soo soocay waa disc a ballaciisu yahay ee ku saabsan 1.5 mm. qaybta orbital leeyahay dherer ah oo ku saabsan 3 cm. dareemayaasha The optic leeyahay dherer of 5-6 mm ee canal lafta iyo 4-17 mm in channel intracranial.

dhammaato dareemayaasha Location in meelo kala duwan oo ileyska lagu dhisay qaab gaar ah. Sidaas darteed, marka ay u dhawaanayaan disc ah, lakabka fiber dareemaha ayaa dhumucda ballaaran, fiiloyin dareemayaasha ee disc ah waxay ku tashadeen at xaglo xaq u leedahay, la xirrira ah dareemaha optic intraocular cidina wehelin.

dareemaha iftiinka bilaabo ka disk, oo waxaa lagu soo gabagabeeyay in chiasm ah. dareemaha iftiinka in qofka weyn uu leeyahay dherer of 35 ilaa 55 mm. Waxaa la daboolay by saddex xuubka: adag, jilicsan iyo arachnoid. bannaan oo u dhaxeeya qolofka waxaa ka buuxsamay dareere gaar ah oo la Halabuurka kiimikada adag.

Dunta Optic labada indhoodba ka yaalaan saabka cranial, taas oo ku xiran yihiin in Sella. iyagii ku soo wada rid waxaa lagu magacaabaa chiasm. Waxaa qayb ahaan midaysan optic fiber ah. Dunta Intersecting ku xiran yihiin kuwa soo jeedaan qaybaha gudaha ee ileyska xasaasiga ku ah. isgoysyada Kuwani waa mid aad muhiim u ah cudurka saxda ah ee cudurada qaarkood. Ka dib markii gudbaya wadooyin optic loo sameeyay taas oo salka stem maskaxda maraya iyo dhamaadka mariyey meydadka crankshaft ku quadrigemina hore iyo gobolka danbe ee thalamus ah. meydadka Geniculate waa waxa ugu muhiimsan ee la isugu gudbiyo ee falalkooda in kiliyaha muuqaal ah. macdantaa kuwa joojiso in thalamus ah, ku qaadeen xeerka reflex ee hummaag visceral iyo degaaankaaga. A meydadka quadrigeminal hore loo isticmaalo kala iibsiga ee hummaag ardayda. Dunta Optic mari u nuclei ee dareemayaasha oculomotor ah, sida qeyb ka mid ah oo ay galaan isha, taasoo keentay in muruqyada iris ah.

Hababka dabeecadeed oo bahal ah, kaas oo in dareemaha iftiinka, waxay leeyihiin xiriir dhow la dhismeedkooda. Sabab u tahay tirada badan ee qalintaanka in ku jira maqaal qoruhu iyo hareerayn dareemaha iftiinka, iyo sidoo kale dareenka korodhay in sunta, shuruudaha saameynta sunta on dareemayaasha optic, iyo cudurrada faafa. Iyada oo la kordhiyo cadaadiska intraocular dhibic ugu nugul noqdo disc ah, ku dheehan yahay ee glaucoma waxaa u riixriixan oo la aasaasay fossa. cadaadiska intracranial High xajisto dheecaanka dareere ah ee-meel dhexeeya, taasoo keentay in riixo dareemayaasha iyo barar ku jira walax interstitial dhexdeeda.

CD ayaa sidoo kale saamayn dhaawici xun ee isbedel hydrodynamic iyo hemodynamic oo keeni in hoos u dhac in cadaadis intraocular. Isbeddel kasta oo dareemaha iftiinka mar walba ay cillad aragtida durugsan ama dhexe, halka waxaa laga yaabaa inay sii xumaato ah aragtida fiidkii iyo khilaafaadka midabka. Cudurada la xiriira dareemaha iftiinka, waa side, bararka ama xasaasiyad ee dabiiciga ah. Mararka qaar waxaa jira burooyinka iyo cilladaha ee horumarinta iyo dhismaha dareemaha iftiinka.