I-astigmatism edibeneyo yintsilelo ebonakalayo eyinkimbinkimbi, apho i- hyperopia kunye ne-myopia zigcinwa ngokufanayo ngeso linye, Iintlobo ezimbini zokuphulwa komthetho zihlanganisiwe. Kule nkalo, akukho ngqalelo enye yeemitha kwi-retina, kunye nomfanekiso kwiso lijoliswe kabini: phambi kwe-retina kunye nangemva kwe-retina. Ngoko ke, umbono ubonakele kakhulu. Kubantu abajongene nalesi sifo, i-cornea yeso ilungelelaniswe okanye, ngokuchaseneyo, i-concave. I-astigmatism edibeneyo ingaba kwimiba mibini, kwaye yodwa kwenye yazo.
Iimbangela ze-astigmatism edibeneyo
Uninzi lweziganeko ze-astigmatism ezidibeneyo zidibaniswa nokuzalwa. Kwakhona, ukukhubazeka kungenzeka ngenxa yokuhlinzwa kwamehlo okanye emva kokulimala kwamehlo okukhathazayo, okubangelwa ukutshabalalisa i-cornea. Ezinye izizathu zeso siphene siyakwazi ukutshintshwa kweendlela ezahlukeneyo ezibangelwa zizifo (umzekelo, i-keratonus).
Iimpawu ze-astigmatism edibeneyo
Ngefom yefa, ukubonakaliswa kwayo sele kubonakaliswe ebuntwaneni. Ubunzima bokubukeka kunye ne-astigmatism exubeneyo buphantsi, zonke izinto eziphawulweyo ziphosakekile: zilahlekelwa ukucaca kwazo, ziguqulwa, kunye nobukhulu bazo kwaye umgama kubo ziyinkimbinkimbi. Ukongezelela, izigulane ezinokuxhatshazwa kwe-astigmatism ezixutywe ngokukhawuleza kwamehlo, ngokukodwa xa zisetyenzayo, ezifuna ukunakekelwa rhoqo kunye nombono wombono. Ngokuqhelekileyo banentloko ye-paroxysmal nature.
Indlela yokuphatha i-astigmatism edibeneyo?
Ukuxilongwa, uvavanyo lwe-ophthalmologic usebenzisa ietafile kunye neelenti zamagqabha kufuneka zichane umahluko kwi-curnea. Ukuxilongwa kwekhompyutheni kwenziwa kwakhona. Emva koko, amaqhinga enyango akhethwa.
Ngethamsanqa, i-astigmatism edibeneyo namhlanje iyakwazi ukulungiswa nokulungiswa ngempumelelo. Isibheno esikhatywayo ngokukhawuleza kumgqirha ngeempawu zentsholongwane zivumela ukuphepha iingxaki ( ukuxubha , ukuhla okubonakalayo kumbono).
Izindlela zokongamela ukwelashwa kwe-astigmatism edibeneyo iquka ukukhethwa kwendlela yokulungiswa kombono: iilazi ezibonakalayo okanye ii-lens zokudibanisa, eziya kuvumela ukulungisa ulwahlulo kumandla okubonakalayo angama-meridians angundoqo. Kwiiglasi kunye ne-astigmatism edibeneyo, kuhlanganiswa iiglasi ezijikelezayo kunye neengqungquthela. I-lens zoqhagamshelwano, ezinokuba nzima okanye zincinci, zibe nesimo sothutho. Iilensi zamathambo zanamhlanje zivumela ukuba uzinxibe ixesha elide ngaphandle kokufumana nantoni na.
Nangona kunjalo, iilensi okanye iiglasi azikuvumeli ukuba ugqibe ngokupheleleyo ingxaki, kodwa ikuvumela ukuba uphuculise amehlo akho xa uwagqoke. Ukulungisa imeko iyakwenzeka kuphela ngophando lotyando. Inokumiselwa kwiimeko apho isigulane singenayo i-retinal pathologies, akukho zikhonkwane ebusweni bamehlo okanye ezinye izifo ze-ophthalmic.
Okwangoku, kukho ezimbini iindlela eziphambili zokurhoxiswa kwe-astigmatism ehlanganisiweyo:
- I-keratotomy ye-Astigmatic - le ndlela iquka ukubonwa kwezinto ezincinci kwi-cornea yeso kwezinye iindawo. Oku kwenza ukuba kunokwenzeka ukutshintsha i-curne ye-cornea kwi-plane efunwayo (kunye ne-axis yezinto ezichaziweyo). Kodwa lo msebenzi uninzi
ukungaphumeleli, eyona nto yintloko - ixesha elide kunye nelilibuhlungu, emva kokusebenza kakuhle. - Ukwelashwa kwe-Laser (i-laser keratomileus) yindlela ekhoyo yanamhlanje. Iquka impembelelo ye-laser bram kwiindawo ezithile zezicubu kumqolo ophakathi kwe-cornea emva kokunqunyulwa okhethekileyo ngaphambili kweso sixhobo esikhethekileyo. Ngaloo ndlela, i-cornea inikezwa ngendlela ehlelelekileyo rhoqo kunye neeparitha ezithile, ezivumela umntu ukuba akhulise amandla okukhanya kweso kwelinye i-meridian kwaye alinciphise kwelinye.