Optical coherence tomography (OCT) inofanirwa nekodhidhi yekuongorora imaginha inoshandiswa kuwana mazano ekugadzirisa zvikamu zvakasiyana-siyana zve retina . OCT yakafanana nekuedzwa kwe ultrasound, kunze kwekuti kufungidzira kunoitwa nekuyera chiedza pane kurira. OCT inotarisa retinal nerve fiber kuve yakasimba mu glaucoma uye nezvimwe zvirwere zveptic nerve.
IOCT Panguva yeEyes Exam
Optical Coherence Tomography inonziwo OCT, ndiyo nzira yevanhu vanoongorora maitiro uye ophthalmologists kufananidzira kumashure kweziso rinosanganisira macula, optic nerve, retina, uye choroid. Munguva yekuongorora kweziso, optometrists uye ophthalmologist vanogona kutarisa kumashure kweziso uye maitiro ayo. Zvisinei, dzimwe nguva vanachiremba vanoda mamwe tsanangudzo kana kuti vanoda kuongorora tsanangudzo pasi pedenga iyo yakaoma kutarisa nehutano hwakanaka. Mune dzimwe nzira, inogona kuenzaniswa nekuita "MRI ye retina." Vamwe vanorondedzera iyo se optical ultrasound nokuti iyo mifananidzo inofungidzirwa pakati pemasukisi kuti ipe vanachiremba zvidhori zvemukati.
Tsanangudzo inogona kuonekwa neOCT ndeyekugadzirisa kwakadaro kwakadai kuti vanachiremba vari kuona zvinhu zvisati zvamboonekwa mumaziso evanhu. Iko chaizvoizvo zvidhori zvakajeka zvinopfuura 10 microns, zviri nani kupfuura MRI kana ultrasound.
Somugumisiro, panzvimbo yekutarisa muziso uye kufungidzira kuti vangave vanoita retinal kuzvimba zvishoma nenzira iyo inotaridzika, OCT ichapa ruzivo rwakanyatsonyatsoratidzwa uye inonyatsonyatsoonesa kuti denga re retina iri kuunganidza sei mvura inokonzera edema kana kuvhara. Inogona kushandiswa kutarisa kuporesa kana kugadzirisa kwekudzimba.
Maonero ekubatanidza tomography anoshanda nekushandisa interferometry. Interferometry inobatsira vashandi vekuchera maziso kuti vaone mavara nemucherechedzo pane chiedza che-X-rays, inzwi kana mafirimu. Inoshanda kuburikidza nekupenya danda rechiedza muziso. Chikamu chechiedza ichi chinoratidzwa nemaviri akasiyana. Mifananidzo yakavakwa zvichienderana nekusiyana kwekufungisisa kwemukati. IOCT inonyorera kusvika inenge 2-3 mm pasi pepamusoro pezvisikwa. Mifananidzo inowanika zvakajeka kuburikidza newindo rekunze, rakadai se-cornea. Chiedza chinopinza muziso chiri chakachengeteka. Izvo zvinowanikwa zviri pedyo nechiedza chechiedza saka hapana kuora kweziso kuchaitika.
Chii Chinoitika Munguva yeOCT?
IOCT inogona kunge yakanyanya kuve yakajeka yekutengesa mifananidzo yekurapa yaunenge watora. Muedzo unotora maminitsi mashanu chete kuti uite. Neine makemikari akawanda eOCT, iwe unongogadza musoro wako mumusoro. Iyo nyanzvi ichagadzirisa chiridzwa chacho. Iwe uchadzidziswa kurongedza chiedza chinenge chiri mukati memashini. Iyo nyanzvi ichazogamuchira mufananidzo. Kana vadzidzi vako vari vaduku kana kana chiremba achida mufananidzo nzvimbo chaiyo, vadzidzi vako vachabvongodzwa nemadonhwe emaziso. Vanhu vazhinji havadi kuderedzwa.
IOCT inonyanya kushandiswa pakuongorora mamiriro ezvinhu akawanda, kusanganisira:
- Central serous retinopathy
- Diabetes retinopathy
- Glaucoma
- Macular degeneration
- Macular holes
- Pre-retinal macular fibrosis (cellophane maculopathy)
OCT inomiririra zvimwe zvekufambira mberi kwekemikari mukutarisa kwemaziso zvinogona kuendeswa pamutengo wakaderera kumurwere.