Kugwirizana molumikiza tomography (OCT) ndi teknoloji yosaganizira zojambulazo zomwe zimagwiritsidwa ntchito kuti zipeze zithunzi zapamwamba za retina . OCT ndi ofanana ndi kuyesa kwa ultrasound, kupatula kuti kujambula kumachitika poyerekeza kuwala osati kumveka. OCT imapanga makina a retinal nerve fiber ku glaucoma ndi matenda ena a mitsempha ya optic.
OCT Pa Nthawi Yoyesera
Makhalidwe Othandizira Tomography amatchedwanso OCT, ndi njira ya optometrists ndi ophthalmologists kufotokoza kumbuyo kwa maso kuphatikizapo macula, mitsempha ya optic, retina, ndi choroid. Pakati pa kafukufuku wa diso, optometrists ndi ophthalmologist angayang'ane kumbuyo kwa diso ndi matupi ake. Komabe, nthawizina madokotala amafunikira mwatsatanetsatane kapena amafunika kufufuza mwatsatanetsatane pansipa zomwe ziri zovuta kuziwona ndi njira zoyenera. Mu njira zina, zikhoza kuyerekezedwa ndi "MRI ya retina." Ena amafotokoza kuti ndiwotchi yotchedwa ultrasound chifukwa chojambula zithunzi pakati pamatenda kuti apereke madokotala ndi zithunzi zosiyana.
Tsatanetsatane yomwe ingathe kuwonetsedwa ndi OCT ndiyipamwamba kwambiri kuti madokotala akuwona zinthu zomwe sichinaonekepo kale mu diso la umunthu wamoyo. Zowonongeka zithunzithunzi zoposa ma microns 10, zomwe ziri bwino kuposa MRI kapena ultrasound.
Chotsatira chake, mmalo moyang'anitsitsa diso ndi kuganiza kuti akhoza kukhala ndi kutupa kwa retina pokhapokha momwe akuwonekera, OCT idzatipatsa tsatanetsatane wazomwe timapanga ndikuwonetsa ndondomeko yomwe retina imasonkhanitsira madzi akumwa kapena kutupa. Ikhoza kugwiritsidwa ntchito kufufuza machiritso kapena kuthetsa kwa kutupa kumeneko.
Kugwirizana molumikiza tomography kumagwiritsa ntchito interferometry. Interferometry amathandiza akatswiri a maso kuti azijambula minofu ndi kuwala m'malo mwa X-rays, phokoso kapena maulendo a wailesi. Zimagwira ntchito powala kuwala kwa diso. Chimodzi mwa kuwala kumeneku chikuwonetsedwa ndi matenda osiyanasiyana. Zithunzi zimamangidwa malinga ndi kusiyana kwa mkati kumeneku. OCT imagwiritsa pafupifupi 2-3 mm pansi pa minofu. Zithunzi zimapezeka bwino kudzera muwindo lowonetsetsa, monga cornea. Kuwala kumene kumalowa m'diso kumakhala kotetezeka. Zotsatira zake ziri pafupi ndi kuwala kofiira kuti palibe diso lomwe lidzawonongeke.
Kodi N'chiyani Chimachitika Pakati pa OCT?
OCT ikhoza kukhala njira yosavuta yojambula yachipatala yomwe mungatenge. Mayesowa amatenga mphindi zisanu zokha kuti achite. Ndi makina ambiri a OCT, mumangoika mutu wanu pamutu. Wogwira ntchitoyo amatha kugwiritsa ntchito chida. Mudzauzidwa kuti muwone kuwala komwe kuli mkati mwa makina. Wogwira ntchitoyo adzalandira fano. Ngati ophunzira anu ali aang'ono kwambiri kapena ngati dokotala akufuna fano malo enieni, ophunzira anu adzasungunuka ndi madontho a maso. Anthu ambiri samasowa kuchepetsa.
OCT makamaka amagwiritsidwa ntchito poyesa maonekedwe ambiri a diso, kuphatikizapo:
- Central serous retinopathy
- Kuchepetsa matenda a shuga
- Glaucoma
- Kusokonezeka kwa macular
- Maenje a macular
- Pre-retinal macular fibrosis (cellophane maculopathy)
OCT imaphatikizapo chitukuko chatsopano cha zamakono mu chisamaliro cha diso chomwe chingakhoze kuperekedwa pa mtengo wotsika kwa wodwala.