The optic tsinga, nechivako kwayo uye mashandiro

The optic tsinga ndohwaJehovha zvikuru kushandiswa tsinga uye mamiriro afanane cerebral cortex. Mashandiro anoita mashoko optic etsinga vari nokupfuuridzirwa etsinga nomunhu, vakawana kana pachena kuti akasiyana chiedza kuitika kubva the retina kusvika kutarisana muzinda uropi cortex.

Optic tsinga: Structure.

Tsinga fibers of the retina ikashandiswa kupinda imwe optic tsinga. Inoitwa madhipatimendi zvina: intraocular, vnutrikanaltsevoy, intraorbital uye intracranial. The intraocular vakaparadzana ndiye Disc ane dhayamita vanenge 1.5 mm. The orbital mugove ane kureba vanenge 3 cm. The optic tsinga ine kureba 5-6 mm ari pfupa Canal uye 4-17 mm mune intracranial gwara.

Location tsinga harinzwi munzvimbo dzakasiyana-siyana the retina inovakwa rimwe marongerwo. Saka, kana kuda Disc, etsinga internet rukoko ane ukobvu guru, etsinga fibers ari Disc vakatsunga kurudyi pamakona, pova kumwedzi intraocular optic tsinga.

The optic tsinga rinotanga kubva dhisiki, uye ari kupedza ari chiasm. The optic tsinga iri mukuru ane kureba 35 kusvika 55 mm. It rinosanganisira meninges matatu: zvakaoma, nyoro uye arachnoid. The nzvimbo pakati anoshongwa yakazara chinokosha chinowanika ane kunzwisisa makemikari anoumba.

Optic fibers pamaziso vose dziri mune cranial mhango, izvo zvakabatanidzwa mu sella. Kuaisa pamwe chete inonzi chiasm. It zvishomanana piringisha ari internet optic. Intersecting fibers inozviisa avo kuti kubva mupfungwa zvikamu the retina zvinobva. panosangana izvi zvinokosha kwazvo zvakarurama zvokuongorora vamwe zvirwere. Pashure pokuyambuka optic maturakiti vari akaumba iri mujinga uropi hunde anopfuura kumativi magumo panguva crankshaft miviri quadrigemina mberi neshure munzvimbo thalamus. Geniculate miviri zvinokosha nokubata nomunhu kuti kutarisana cortex. fibers idzo vanodimbura vari thalamus, vakatakura dzepanguva mutemo visceral uye somatic hunenge. A pamberi quadrigeminal miviri akashandiswa kuchinjwa vevaanodzidzisa hunenge. Optic fibers zvakaitika kuti nuclei ari oculomotor etsinga, sechikamu iyo vachipinda ziso, zvichiguma tsandanyama pakati Iris.

Dzinotsanagura pathological hunhu, iyo munguva optic etsinga, kuva noukama hwepedyo ayo mamiriro. Nokuda vakawanda capillaries kuti huri partitions uye vakombe optic etsinga, uyewo yakawedzera aikanganiswa muchetura, mamiriro ezvinhu kuti chepfu migumisiro pamusoro optic tsinga, uye zvirwere zvinotapuriranwa. With kuwedzera mune intraocular kumanikidzwa pangozi kupfuura nguva anova Disc, apo mune yemaziso zviri akavanyengetedza uye kuumbwa fossa. High intracranial kumanikidzwa anoramba nemvura water drainage iri Inter-nzvimbo, zvichiguma tsinga compression uye kuzvimba zviri mukati interstitial fuma.

The CD vanewo nezvakwakaipira inokanganisa pamusoro hydrodynamic uye hemodynamic kuchinja kutungamirira vasanyanye intraocular kumanikidzwa. Chero kuchinja optic etsinga nguva dzose kuita kuti dysfunction ari peripheral kana nechepakati chiono, apo pangava Kuipa mambakwedza chiratidzo uye ruvara kusiyana. Zvirwere chokuita optic etsinga, muri chinopedza, anogumbura kana sema zvakasikwa. Dzimwe nguva pane namamota uye abnormalities kukura uye nemamiriro optic etsinga.