Inkcazo: Ugqirha amancinci amhlophe okanye asemhlophe afake kwi- retina okanye kwi-head optic head.
Unokuva itekisi lakho yamehlo ukubonakala kwidrafti ngexesha lokuhlolwa kwakho kwamehlo alandelayo. UDrus uqokelele izinto ezingaphezulu kwe-extracellular ezakhayo kwiso. Ukufunyanwa kwezinto ezimbalwa eziqhelekileyo eziqhelekileyo ngokugqithiseleyo ziqhelekile ngamehlo asebegugile, baninzi abantu abangaphezu kweminyaka engama-40 ubuncinane babedlala.
Nangona kunjalo, ubuninzi beedrafti kwi- macula ngenye yezona zibonakaliso eziqhelekileyo zokuqala kwe- macular degeneration (AMD) ezindala . Oogqirha bamazi banokubona ukutyhutyha ngexesha lovavanyo olujonge kakhulu lweziliso.
Yintoni i-Macular Degeneration?
Ukuchithwa kweMicrosoft iyona nto ibangela ukulahleka kombono kubantu abangaphezu kweminyaka engama-60. Ukulahleka kombono kwiimeko zakuqala zokuhlaselwa kwe-macular kufutshane, kwaye uninzi lwabantu aluqapheli. Ubuhlungu abuqhelekanga. Njengoko eso sifo siyaqhubeka, umboniso ungabonakala kwaye izinto zibonakala ziphosakele. Izigulana zinokukhalaza ngamagama alahlekileyo ngamazwi okanye ubunzima bokubona ukuprinta okuncinci. Kwiimeko ezinzima kakhulu ze-AMD, kunokuthi kubekho ukulahlekelwa okukhulu okanye ukumbalwa kombono ophakathi, ngelixa umbono we-peripheral ungatshintshi. Ngaphezu koko, umbala wombala ungaguquleka.
Yintoni eDlwengulwayo?
Ukuhlaselwa kweMicala kwenzeka xa i-macula, inxalenye ye-retina, iqala ukuhla. I-retina yinqanaba elisezantsi liso elithintekayo.
Kwi-macular degeneration, utshintsho oluphawulekayo lwenzeka kwiiseli ezinemibala e-macula. Iingqungquthela zamathambo ziqala ukwakha, ukuvelisa i-particle ephuzi okanye emhlophe. Ezi ngqungquthela, ezibizwa ngokuba ngumdaka, zingaqala ukugqithisa ukuthuthwa kwe-oksijini kwiiseli ze-photoreceptor. Iiseli ze-photoreceptor, okanye iintonga kunye neebhondi, zidinga i-oksijini eninzi.
Xa bengenakufumana oksijini okwaneleyo, baqala ukuhlakala. I-macula, ejongene nombono onobukhali, umbono obonakalayo, yenziwe ngamaseli amaninzi. Njengoko iiseli ze-cones ziyafa, imbonakalo ecacileyo okanye ebukhali iya kuba yinto ecacileyo kwaye ingacacile.
Iintlobo zeDrusen
Ukuba ugqirha lakho kwamehlo libona udlalwa ngexesha lokuhlolwa kwamehlo alandelayo, kubalulekile ukwazi uhlobo olunalo. Kukho iintlobo ezimbini ezahlukileyo, ezilukhuni kunye eziluhlaza. Umdaka okhuni uncinci kwaye unemizila ebukhali. Ziqhelana kwaye zibhekwa zingenakonakalisa. Ukunyuka kunzima ukunyuka kunye nobudala kwaye kunokuthi okanye kungabonakali ukuphuhliswa kwexesha elidala lokuxhatshazwa kwe-macular.
Ngesinye icala, idlwengula, inkulu kunye nemingcele engaphantsi. Ukutya okunyanzelekileyo kuboniswe ngobukhulu obuhlukeneyo kunye nobunzima. Ugqirha lakho kwamehlo liya kukhathazeka ngakumbi ngombono wakho ukuba ubona i-drusen. Zibhekwa njengenobungozi kunokuba zixakeke kanzima kuba zivame ukuvimba i-oksijeni ukuya kwi-macula. Abantu ababethambileyo badla ngokutshintsha ngakumbi embonweni kunabo baxakeke nzima. Kwakhona, indawo epholileyo ingavela phakathi kwembono yabo.
Iimpazamo eziqhelekileyo: I- Droosen