Ake sifunde ngokuhlolwa kwe-VEP (Visual Evoked Potential Test), okuhlola ukuxhumana phakathi kokubona kwakho nobuchopho bakho.

Kungenzeka ukuthi utshelwe udokotela ukuthi, 'Singahlola i -`(VEP)`?' Uma esho lokho, kufika umbuzo omncane engqondweni, akunjalo, 'Kuyini lokhu `(VEP)`?' Namuhla sizokhuluma ngalokho okubizwa ngokuthi ukuhlolwa okubonakalayo okubangelwa amandla, noma njengoba sonke sazi, ukuhlolwa `(Visual Evoked Potential)` noma `(VEP)` . Empeleni lokhu ukuhlolwa okukhethekile okubheka umsebenzi wobuchopho bakho ohlobene nokubona. Ungesabi, lokhu akuyona into enkulu njengoba ucabanga.

Yini ngempela efunwa yilolu hlolo lwe-VEP?

Kulungile, manje ake sibone ukuthi lokhu kuhlolwa kwe-`(VEP)` kwenzani ngempela . Kalula nje, uma ubheka okuthile, kulinganisa ukuthi i-cortex ebonakalayo ebuchosheni bakho isabela kanjani kulowo mfutho wokubona, okungukuthi, ukuthi ngabe ikhipha isignali kagesi nokuthi yenza ngokushesha kangakanani. Lokhu kubizwa nangokuthi `(Visual Evoked Response)` noma `(VER)`.

Cabanga ngakho njokuthi iso lakho liyikhamera. Uma uthatha isithombe ngaleyo khamera, udinga ukudlulisa ulwazi oluvela kuleso sithombe luye ebuchosheni bakho, akunjalo? Indlela ephethe lowo myalezo ibizwa ngokuthi 'iNdlela Ebonakalayo' . I-`(VEP)` ihlola kakhulu ukuthi le ndlela isebenza kahle yini. Le ndlela ebonakalayo ihlanganisa:

• Amehlo akho ('Amehlo')
• Imizwa Yokubona - Lezi zifana nezintambo ezithwala imiyalezo esuka esweni iya ebuchosheni. Ziyingxenye ebaluleke kakhulu.
• I-Optic Chiasm - Lena indawo engavamile ngaphakathi kobuchopho bakho. Yilapho eminye yemicu yezinzwa ye-optic evela kwelinye iso ihlangana khona nemicu yezinzwa evela kwelinye iso.
• I-Optic Tract - Indlela ethwala ulwazi oluvela ku-retina oluya ebuchosheni.
• Imisebe Ye-Optic - Lena yindlela ulwazi olubonakalayo oluvela ku-retina yakho, i-optic nerve, kanye ne-optic disc oludluliselwa ngayo ebuchosheni.
• I-Cerebral Cortex - Isikhungo esiyinhloko sokucubungula nokuqonda ulwazi lobuchopho .

Ngakho-ke, uma kukhona ukungahambi kahle noma inkinga endleleni yokubona noma i-cortex yokubona yobuchopho bakho, singayibona ngemiphumela yokuhlolwa kwe-`(VEP)`.

Yiziphi izifo ezingatholakala ngokuhlolwa kwe-VEP?

Manje ungase ucabange, 'Kulungile, lokhu kumayelana nokubuka izinto ezihlobene nombono, ngakho-ke hlobo luni lwezifo olungaluthola?' Empeleni, ukuhlolwa kwe-`(VEP)` kuvame ukusetshenziselwa ukusiza ekuxilongeni izimo ezithile zezokwelapha.Noma njengecebiso lokukhomba kuleyo ndlela.

Isizathu esiyinhloko sokuthi odokotela bayale lokhu kuhlolwa ukuthi abantu abanesimo esibizwa ngokuthi i-Multiple Sclerosis (MS) bangaba nesimo esibizwa ngokuthi i-Optic Neuritis. Yilapho lokhu kuhlolwa kubaluleke kakhulu.

Akukhona lokho kuphela, kodwa lokhu kusiza ekuboneni ezinye izimo eziningi:

• Isimila esakheka emthanjeni wakho wokubona, esibizwa ngokuthi i-glioma . Lokhu kuvame ukuhlotshaniswa nesimo esibizwa ngokuthi i-Neurofibromatosis uhlobo 1.
• Ukuvinjelwa kwezindlela zakho zokubona, isibonelo, ngenxa ye -hydrocephalus noma i-pituitary adenoma .
• Ukulimala kwendlela yokubona ngenxa yokulimala ekhanda noma ebuchosheni .
• I-Toxic Optic Neuropathy, engabangelwa imithi ethile noma izinto ezinobuthi njenge- carbon monoxide .
• Ezinye izinhlobo ze-optic neuropathy, isibonelo , i-Anterior Ischemic Optic Neuropathy .
• Izinkinga ngensimu yokubona ebangelwa ukutheleleka. Isibonelo, isifo sofuba se-meningeal .

Lokhu kuhlolwa kungahlola nobukhulu bezinye izimo ze-neurodegenerative esezivele ziqashelwe . Ezinye izibonelo yilezi:

• I-Multiple Sclerosis ( MS )
• I-Leber Optic Neuropathy (LON)
• I-Kjer-type Dominant Optic Neuritis (DON)
• I-Friedrich's Ataxia

Lolu vivinyo lwe-VEP lusebenza kanjani?

Kulungile, manje ake sibone ukuthi kwenziwa kanjani ngempela lokhu kuhlolwa kwe-`(VEP)`, nokuthi kwenzekani . Lokhu akukukhulu noma akukwesabisi njengoba ungase ucabange, kuyinqubo elula kakhulu.

Banamathisela ama-electrode amancane ambalwa ezindaweni ezithile zekhanda lakho, noma ugebhezi. Lawa afana nezitikha ezincane. Bese uboniswa isikhuthazo esibonakalayo. Ngokuvamile lokhu kuyiphethini yebhodi lokuhlola elikhanyayo .

Ama-electrode anamathele ekhanda lakho adala izimpawu zikagesi (imiyalezo) ezihamba phakathi kwamangqamuzana obuchopho bakho.Ukulinganisa. Uma leso sibonelo sebhodi le-chess sikhanya, i-cortex yakho ebonakalayo iyasabela kuyo futhi izama ukuqonda lolo lwazi. Ngaleso sikhathi, umsebenzi kagesi ebuchosheni bakho uqoshwa yilawo ma-electrode. Odokotela benza lokhu kuhlolwa kwe-``(VEP)`` kanye ne -``Electroencephalogram`` (``EEG```) . Lokho kusho ukuthi babheka nomsebenzi kagesi ojwayelekile wobuchopho bakho.

Lokho okwenziwa yilo mshini we-`(VEP)` ukukukhombisa leso sikhuthazo esibonakalayo izikhathi eziningana bese uthatha inani elimaphakathi lezibonakaliso ezivela ku-`(EEG)` isikhathi ngasinye. Yilapho-ke ungahlola ngokunembile ukusebenza kwendlela yakho yokubona. Lo mshini uqopha izimpendulo zikagesi ezivela ebuchosheni bakho ngezindlela eziningana, noma 'imikhondo'. Uyazi, kune -'waveforms' ethile ebuchosheni bakho (i-cortex ebonakalayo), eyenzeka ngezikhathi ezithile kakhulu ekuphenduleni isikhuthazo esibonakalayo.

Uchwepheshe ube esehlaziya la maphethini amagagasi ukuze abone ukuthi kukhona yini umsebenzi ongavamile, okungamsiza aqonde ukuthi hlobo luni lwenkinga olungase lube khona ensimini yakho yokubona.

Kufanele uzilungiselele kanjani ngaphambi kokuhlolwa?

Akukho lutho okudingeka ulwenze ukuze ulungiselele kakhulu lolu vivinyo lwe-`(VEP)`. Kodwa kunezinto ezimbalwa okufanele uzikhumbule.

Udokotela wakho uzokutshela konke okudingeka ukwazi mayelana nokuhlolwa nokuthi yini okufanele uyenze ngaphambi kwako. Uma unemibuzo noma ukukhathazeka, qiniseka ukuthi uyabuza . Into ebaluleke kakhulu ukulungiselela njengoba besho.

Udinga ukugcina izinwele zakho zihlanzekile ngosuku olungaphambi kokuhlolwa, noma ekuseni kokuhlolwa. Kungcono uma ungageza izinwele zakho. Ungafaki noma yiziphi izifutho zezinwele, amafutha, noma ama-gel ezinweleni zakho. Ngoba, uma unezinye zalezo zinto, zingaphazamisa ama-electrode anamathele ekhanda lakho asebenze kahle. Yilokho kuphela okufanele ukwenze. Kulula kakhulu, akunjalo?

Kwenzekani ngesikhathi sokuhlolwa?

Njengoba kunezinhlobo eziningana zokuhlolwa kwe-`(VEP)`, indlela ezenziwa ngayo ingahluka kancane. Kodwa ngokuvamile kuhamba kanje:

• Ilungu labasebenzi bezokwelapha lizonamathisela ama-electrode amaningana, abukeka njengamapuleti amancane ensimbi, ezindaweni ezithile zekhanda lakho . Lawa anamathiselwe ngohlobo olukhethekile lwe-glue olungasuswa kalula. Lawa ma-electrode axhunywe emshinini. Umshini yiwona onikeza udokotela ulwazi mayelana nomsebenzi wobuchopho bakho.
• Ngemuva kwalokho, uzocelwa ukuthi umboze iso elilodwa nge-patch bese ubheka i-monitor ngelinye iso. I-monitor izobonisa isikhuthazo esibonakalayo esikhanyayo (ngokuvamile iphethini yebhodi lokuhlola). Uma usuqedile ukuhlola iso elilodwa, elinye iso lizohlolwa ngendlela efanayo.

Ngeke uzwe ubuhlungu ngenkathi wenza lokhu. Ungase uzizwe ungakhululekile ngoba kufanele uhlale endaweni efanayo isikhashana. Kodwa akukho okufanele ukhathazeke ngakho. Ungahlala uzolile.

Kuthatha isikhathi esingakanani ukuhlolwa?

Lonke lolu vivinyo lungathatha cishe imizuzu engama-60, noma cishe ihora, ukuqeda. Ngezinye izikhathi kungaba ngaphansi noma ngaphezulu kwalokho. Ngakho-ke lungela lokho bese ubeka eceleni isikhathi.

Ithini imiphumela yokuhlolwa?

Uma ukuhlolwa kwe-`(VEP)` sekuqediwe, uchwepheshe uzofunda imiphumela ngokucophelela. Ngemuva kwalokho uzolungisa 'umbiko' bese ewuthumela kudokotela wakho. Kulapho-ke udokotela wakho azochaza khona imiphumela.

Lokhu kuhlolwa kwe-`(VEP)` kungakhomba izinkinga eziningana ezahlukene ensimini yakho yokubona. Kuye ngenkinga, ukuma kwamagagasi kanye nesikhathi esithathayo ukuze ubuchopho buphendule kusukela ngesikhathi isikhuthazo sinikezwa kuzohluka. Isibonelo, ezimweni 'zokususa i-myelin' ezilimaza i-myelin sheath ye-optic nerve (njenge-`(MS)`), ukuhlolwa kwe-`(VEP)` kuzobonisa ukuthi ubuchopho bakho bubambezelekile ekuphenduleni. Lokhu kusho ukuthi umlayezo uthatha isikhathi eside ukudlula.

Khumbula, noma ngabe imiphumela yalolu vivinyo ikhombisa okuthile, udokotela wakho angase akucele ukuthi wenze ezinye izivivinyo ukuze akuqinisekise. Ngakho-ke ungesabi ngokushesha. Khuluma nodokotela wakho umchazele konke.

Udokotela wakho uzokuchazela ngemiphumela ngokuningiliziwe. Uzokutshela nokuthi uma kudingeka ezinye izivivinyo. Uzokunikeza nesiqondiso salokho okufanele ukwenze ngokulandelayo.

Ekugcineni, kufanele ngikutshele lokhu.

Ukuhlolwa kwe-Visual Evoked Potential (VEP) kuyindlela elula, engadingi ukungenelela engasiza ekuxilongeni izimo ezithile ezithinta indlela amehlo akho nobuchopho bakho obucubungula ngayo izinto ezivusa amehlo. Ngeke uzwe ubuhlungu ngesikhathi sokuhlolwa.

Udokotela wakho uzokuchazela konke ngaphambi nangemva kokuhlolwa. Uma unemibuzo noma ukukhathazeka, ungesabi ukubuza . Ithimba lakho lezokwelapha likhona ukukusiza. Ngakho-ke, uma udokotela wakho ekutshela ukuthi wenze ukuhlolwa okufana nalokhu, ungesabi ngokungadingekile, kulungile? Lokhu kumane nje kuzokusiza ukuthola ulwazi olubalulekile mayelana nempilo yakho.

Ukuhlolwa okungenzeka okubangelwa ukubona , ukuhlolwa kwe-VEP, ukubona, ukusebenza kobuchopho, indlela yokubona, izifo zemizwa, i-Multiple Sclerosis (MS)