Kumvetsetsa momwe Zowonjezera Zingathandizire Kulimbitsa Masomphenya
Mutha kumva mawu akuti "kusuntha maso" ogwiritsidwa ntchito ndi odwala, koma opaleshoni yokonzanso diso sizingatheke. Diso lonse silingakhoze kutengedwa kuchokera kwa munthu mmodzi ndikulowetsedwa kukhala munthu wina kuti apititse patsogolo masomphenya. Izi zimagwira ntchito ndi ziwalo zomangira thupi ndi zina, koma sizingakhoze kuchitidwa ndi diso lonse ndi zodziwa zamankhwala zamakono komanso zamakono.
Pakalipano, njira yokha yojambula maso yomwe ilipo ndiyo yowunikira , yomwe imalowetsa cornea yodwala ndi cornea yoperekedwa ndi wopereka wakufayo. Kukonzekera kwa cornea kungabweretse kusintha kwakukulu m'masomphenya. Ndipotu, anthu ena amatha kukhala opusa mwalamulo asanayambe opaleshoni ndikupeza masomphenya awo ndi 20/20 mutatha kuika khunyu.
Mosiyana ndi ziwalo zomangira thupi, anthu omwe amalandira khunyu sizimafuna mankhwala otsutsa kuti asunge khungu lawo.
The Cornea
The cornea ndi minofu yapaderadera komanso yowonekera pamaso pa diso lomwe limathandiza kuthandizira zithunzi zoyang'ana maso. Kuwala kuyenera kudutsa mu cornea kuti ubongo ukwaniritse malingaliro, kotero cornea imawonekera pamene ili yathanzi. Zapangidwa ndi zigawo zisanu ndi chimodzi. Magawo, kuchokera kunja kwa diso mpaka mkati, ndiwo: epithelium, wosanjikiza wa Bowman, stoma, wosanjikiza wa Dua, membrane ya Descemet, endothelium.
Zigawozi zimagwirira ntchito limodzi kuti ziwone masomphenya, koma ngati zikhale mdima kapena zosavuta, masomphenya akuchepa kwambiri ndipo akhoza kuwoneka kuti akhungu.
Kornea ili ndi khalidwe lapadera kwambiri: ilibe magazi enieni. Mitundu ya thupi imadyetsedwa mpweya ndi zakudya zomwe amafunikira ndi mwazi umene umapulidwa ndi mtima.
Zosowa za cornea zimapezeka pakukhudzana ndi vitreous kuseketsa, madzi omwe amadzaza diso. Ndikusowa kwa magazi kumene kumathandiza kuti cornea ikhale yosavuta, komanso kuti palibe mitsempha yaing'ono yomwe imayenera kubwereranso ku cornea pambuyo pa kuchotsedwa kwa cornea ndipo wina amaika pamalo ake.
Kupereka Cornea
Uthenga wabwino ndi wakuti kwa anthu ambiri, kuika khunyu kumatha kutanthauza kusintha kwakukulu kwa masomphenya. Mosiyana ndi ziwalo, zomwe anthu ambiri sangathe kupereka pamene amwalira, anthu ambiri amatha kupereka zopereka zawo kuti apereke. Matenda ndi matenda ambiri omwe amachititsa kuti zikhale zosatheka kupereka ziwalo kapena ziwalo zina, monga khansara, sizitetezera zopereka za corneas.
Tsogolo la Maso Onse Opaleshoni
Asayansi ndi ochita kafukufuku wa zachipatala sayembekezera kuti opaleshoni yokonzetsa diso yonse ikhale yotheka posachedwapa. Kuloledwa kwenikweni kwa diso kungafunike kubwezeretsa ndi kubwezeretsanso mitsempha ya optic, yomwe ilibe mphamvu zamakono za opaleshoni.
Zitha kukhala zaka makumi angapo kapena mazana ambiri asanamapange opaleshoni yopanga opaleshoni yomwe imakhala yovuta komanso yochita opaleshoni yotereyi, ndipo mpaka nthawi imeneyo mitundu ina yothandizira masomphenya idzagwiritsidwa ntchito pochiza maso.
Zotsatira:
Zoona za Cornea ndi Cornea Matenda. National Eye Institute. January 2011. http://www.nei.nih.gov/health/cornealdisease/#4