Ukuhlolwa kwesimo sokubukwa kwesimo kuyindlela elula futhi elula yokukala insimu yakho yonke yombono. Ukuvivinywa kwenkundla yokuphikisana kuyisimo sokuqala sokuhlolwa okwenziwa udokotela noma isochwepheshe wakho njengethuluzi lokuhlola lokuyisisekelo. Ukuvivinywa kwenkundla yokuphikisa kuyadingeka imishini encane noma engekho futhi ingenziwa cishe cishe noma yikuphi isimo. Loluhlolo lokuhlola luyaziwa nangokuthi "ukubalwa komunwe" ngoba umhloli angasebenzisa iminwe yakhe ngesikhathi sokuhlolwa.
Iminwe iyabonakala noma ibalwa, kuye ngokuthi izinga lokuhlolwa lilingani. Okokuqala, bobabili amehlo azohlolwa (binocular) bese iso ngalinye lihlolwe ngokwehlukana. Iphutha embonweni izotholakala uma isiguli singaphumeleli ukubona iminwe.
Indlela Esebenza ngayo
Ukuze uqale ukuhlolwa, uzocelwa ukuthi umboze iso elilodwa, ulungise amehlo akho emehlweni omhloli. Umhloli uzobe eseqhuba ukunyakaza komunwe, ehambisa izandla zakhe ensimini yakho ebonakalayo evela ezinhlangothini. Ngenxa yokuthi umbono wakho uhlukaniswe ngama-four quadrants ebuchosheni bakho, umhloli uzobambelela iminwe emgqeni ngamunye. Uzosho ukuthi yimiphi iminwe oyibona ngaphandle kokubheka, ngakho-ke uhlola i-peripheral yakho, noma uhlangothi, umbono.
Ukusebenzisa imiphumela yokuhlolwa, udokotela wakho uzokwazi ukunquma ukuthi unenkinga yokubona ezindaweni ezithile zendawo yakho yokubukwa, kanye nezimbangela ezikhona. Ukuhlolwa kwesimo sokubukwa kwesibindi kuyasiza futhi ekutholeni izindawo eziyimpumputhe nezifo zamehlo , kanye nezinye izinkinga zempilo.
Izinkinga ezibonakalayo zasensimini zinezimbangela eziningi ezingaveli ngaso sonke isikhathi. Udokotela wakho angasebenzisa ulwazi kusuka ekuhlolweni kwendawo yokubukwa ukuze ahlolwe izinkinga noma izimo ezilandelayo:
- i-glaucoma
- i-macular degeneration
- i-optic glioma
- isisu sobuchopho
- multiple sclerosis
- ukushaya
- i-arteritis yesikhashana
- ukukhathazeka kwesistimu ephakathi
- ukucindezeleka kwe-pituitary gland
- umfutho wegazi ophezulu
Ukuhlolwa kwe-Visual Field Computing
Imishini yemishini ebonakalayo yekhompuyutha inikeza imibiko ephelele futhi enembile kunendlela yokuhlola iminwe. Ngesikhathi sokuhlolwa, amaphuzu amancane okukhanya avela esibukweni futhi isiguli kumele sibheke phambili futhi uchofoze inkinobho lapho sibona ukukhanya kokukhanya. Ukukhanya kukhanya kuyohlukahluka ekukhanyeni. Umshini uzothatha inani elincane lokukhanya elidingekayo ukuze isiguli sibone ukukhanya kulelo phuzu noma kumbundu ngamunye.
Ukuhlola okuMbukiso okuBonakalayo njengeThuluzi Lokuxilonga
Ukuhlolwa kwensimu ebonakalayo kuvame ukusetshenziswa ukuhlola noma ukuqapha i-glaucoma. (I-glaucoma yisifo esibhekene nokucindezeleka kweso eliphakeme.) Iningi le-glaucoma liqala ngokulahlekelwa kombono wendawo. Ayikho ikhambi ye-glaucoma, ukuyeka ukuqhubeka kwesifo kuzosiza ukugcina umbono. Ukuqhubekela phambili kwesifo kufanele kuhlolwe eduze ngokubukela insimu ebonakalayo kanye nokucindezela kwangaphakathi.
Umthombo:
I-Choplin, uNeil T noRussel P. Edwards. I-Humphrey Field Analyzer. I-SLACK Incorporated, ngo-1995.