Ininzi yexesha, ukulahlekelwa kombono wendlela yokubhekiselele kubhekiselwa kuyo njengento ebonwayo yintsimi, oku kuthetha ukuba awukwazi ukubona elinye icala lombono kwelinye lamehlo akho okanye awukwazi ukubona elinye icala lombono kwimbini yamehlo akho. Insimu ebonakalayo yinqununu ibizwa ngokuba yi-hemianopsia okanye i-hemianopia. Xa zombini amehlo enomngano ohambelana nombono wendlela, ubizwa ngokuba yi-hommian hemianopsia.
I-Stroke Yenza Njani I-Field Field Visual?
Akuqhelekanga ukuba kuqhutywe umonakalo ukuze kubonwe intsimi ebonakalayo ngenxa yokuba umendo phakathi kwamehlo kunye nommandla wengqondo echazayo into esiyibonayo yindlela enokude eyonakaliswe ngengozi.
Icala lasekhohlo lobuchopho lunoxanduva lokubona uhlangothi olufanelekileyo lomboniso kwimiba yomibini ngelixa ihlangothi elifanelekileyo leengqondo lijongene nokubona uhlangothi lwesobunxele lombono emehlweni abo bobabini.
Izibetho ezibandakanya i-lobe ye-parietal okanye i- lobe yama - occipital yile nto inokubangela i-hemianopsia.
Ngamanye amaxesha i-hemianopsia iyichaphazela lonke icala langakwesokudla okanye kwicala lonke lasekhohlo linye okanye zombini amehlo, kwaye ngamanye amaxesha kuthinta kuphela ilungelo elingezansi okanye elingaphantsi kwelinye icala okanye ngasecaleni elingasentla okanye langasentla. Olu hlobo lwenkcazo ebonakalayo lubizwa ngokuba yi-quadrantanopia ephezulu okanye i-quadrantanopia engaphantsi kuba ichaphazela malunga ne-ΒΌ yendawo ebonwayo endaweni ye-1/2 yendawo ebonwayo.
Ukwahluke phakathi kweSiqendu seMiboniso kunye neNkcazo yokuTyekisa
Ukwahlukana okunokwenene okungenakuyenza nayiphi na into eyahlukileyo kwimpilo yakho yemihla ngemihla.
Umntu onesi-hemianopsia 'uyimpumputhe' kumbono wombono wembambano. Ngomnye umntu onomfanekiso we-hemiagnosia, ngakwelinye icala, unokwazi ukubona uhlangothi olufanelekileyo, kodwa uyayigatya ngokupheleleyo.
Oku kufana ne- hemiagnosia yeendawo eziqhelekileyo, okanye ukungahoywa kwendawo, i-syndrome apho abasindileyo bexhwabalala lonke icala lehlabathi ngenxa yokuba abaqondi ukuba linye icala emva kokuphazamiseka.
Ngaba Ukulahlekelwa Kombono Wemiphophu Kuye Kungcono?
Njengokuba uninzi lwezibetho, ukubetha okubangela ukulahlekelwa kombono wembonakalo kunokuphucula ngexesha elidlulileyo njengoko isilonda siphulukisa kwaye sizinzile .
Ubomi Ngombono wePeripheral Loss
Kukho iiprism ezikhethekileyo kunye nezixhobo ezibonakalayo ezinokuncedisa ekulungiseni nasekuhlawuleleni isambulelo esiqingqiweyo.
Into ebaluleke kakhulu ukuba ulahlekelwe yombono wakho wembambano kukuhlawula ingqalelo ekhethekileyo kwicala lendawo ongayiboniyo. Ngelishwa, abantu abaninzi abahluphekayo kwintsimi yokulahlekelwa kwintsimi abakwazi ukuhlawula ingqalelo engakumbi kwimpumpo ukuba i-stroke iyinkulu. Abanye abantu abanomsebenzi wokunqunyulwa kwintsimi engaboniyo ingxaki ukuba i-stroke ithintele inxalenye enkulu ye-lobe ye-parietal, ebangela ukunganyaniseki kwendawo.
Inkxalabo ebalulekileyo emva kokulahlekelwa kombono kwinqanaba lokukhuseleka, ikakhulukazi xa kuthethwa ukuqhuba.
Ukuba ungumlondolozi womntu onalo nawuphi na uhlobo lokulahlekelwa kwintsimi ebonakalayo, ingaba i-hemianopsia okanye i-quadrantanopia, kubalulekile ukuba ukhangele kwaye uyilumkise into endiyithandayo kwintsimi engaboniyo.
Izizathu
Kukho ezinye iimbangela ezimbalwa ze-hemianopsia. Ezinye iindidi ze-migraine intloko zingabangela ukulahlekelwa kweso sithuba sombono ophambili.
Kubalulekile ukuxelela ugqirha wakho ukuba unenkinga ngombono wakho wendlela yokuqinisekisa ukuba ayikho uphawu lweengxaki ezinzulu, ezifana nesifo, isifo sengqondo esineengqondo okanye isisu somzimba.
Umthombo
Umbono we-Agnosic ugcwele, uMartelli M, iStrappini F, i-Di Pace E, i-Pelli D, i-Journal of Vision, Septemba 2015