I-Corneal topography (i-keratoscopy): yintoni kwaye yenziwa njani

Umxholo

• Yenzelwe ntoni
• Kwenziwa njani

I-Keratoscopy, ekwabizwa ngokuba yi-corneal topography okanye i-corneal topography, luvavanyo lwe-ophthalmological olusetyenziswa kakhulu ekufumaniseni i-keratoconus, esisifo esiqhekezayo esibonakaliswa kukuchaphazeleka kwe-corneal, esigcina sifumana ubume bekhowuni, ngobunzima ekuboneni kunye novakalelo olukhulu ekukhanyeni.

Olu viwo lulula, lwenziwa kwiofisi ye-ophthalmology kwaye lubandakanya ukwenza imephu ye-cornea, ezizihlunu eziselubala eziphambi kwamehlo, ezichonga naluphi na utshintsho kolu lwakhiwo. Iziphumo zobume be-corneal zingaboniswa ngugqirha kanye emva koviwo.

Ngaphandle kokuba isetyenziswe ngakumbi ekuchongeni i-keratoconus, i-keratoscopy yenziwa ngokubanzi kwixesha langaphambi nangemva kokuhlinzwa kotyando lwamehlo, lubonisa ukuba umntu uyakwazi ukwenza inkqubo kwaye ingaba inkqubo ineziphumo ezilindelekileyo.

Yenzelwe ntoni

I-Corneal topography yenziwa ukufumanisa utshintsho kumphezulu womhlaba, owenziwa ikakhulu ukulungiselela:

• Linganisa ubukhulu kunye nokugoba kwe-cornea;
• Ukuxilongwa kwe-keratoconus;
• Ukuchongwa kwe-astigmatism kunye ne-myopia;
• Vavanya ukulungelelaniswa kweliso kwiilensi zonxibelelwano;
• Jonga ukonakala kwe-corneal.

Ukongeza, i-keratoscopy yinkqubo eyenziwa ngokubanzi kwisithuba sangaphambi kokuhlinzwa kotyando olwenziwe ngokutsha, olo luqhaqho olujolise ekulungiseni utshintsho ekuhambeni kokukhanya, kodwa ayingabo bonke abantu abaneenguqu kwi-cornea abakwaziyo ukwenza inkqubo., njengokuba kunjalo ngabantu abane-keratoconus, kuba ngenxa yobume be-cornea, abakwazi ukwenza olu hlobo lotyando.

Ke, kwimeko yekeratoconus, ugqirha wamehlo unokucebisa ngokusetyenziswa kweiglasi zokumisela kunye neelensi ezithile zonxibelelwano kwaye, ngokuxhomekeke kwinqanaba lotshintsho kwi-cornea, inokubonisa ukusebenza kwezinye iinkqubo zotyando. Qonda ukuba unyango lwekeratoconus lwenziwa njani.

I-Corneal topography inokwenziwa kwakhona emva kwexesha lokusebenza, kubalulekile ukuqinisekisa ukuba utshintsho luye lwalungiswa kunye nesizathu sokungaboni kakuhle emva kotyando lokuphinda wenze oko.

Kwenziwa njani

I-Keratoscopy yinkqubo elula, eyenziwa kwi-ophthalmologic office kwaye ihlala phakathi kwemizuzu emi-5 ukuya kweli-15. Ukwenza olu vavanyo akukho mfuneko yokuba ukwanda komfundi, kuba ayizukuvavanywa, kwaye kunokucetyiswa ukuba umntu anganxibi iilensi zonxibelelwano kwiintsuku ezi-2 ukuya kwezi-7 phambi koviwo, kodwa le ngcebiso ixhomekeke ukuqhelaniswa nogqirha kunye nohlobo lwelensi esetyenzisiweyo.

Ukwenza uviwo, umntu ubekwe kwisixhobo esibonisa amakhonkco okukhanya aliqela, aziwa njengeeringi zePlacido. I-cornea sisakhiwo seliso esinoxanduva lokungena kokukhanya kwaye, ke, ngokobungakanani bokukhanya okubonisiweyo, kunokwenzeka ukukhangela ukugoba kwe-cornea kunye nokuchonga utshintsho.

Umgama phakathi kwamakhonkco okukhanya abonisiweyo ulinganisiwe kwaye wahlalutywa yisoftware kwikhompyuter edibene nezixhobo. Lonke ulwazi olufunyenwe ekukhupheni kwamakhonkco okukhanya lufakwa kwinkqubo kwaye lujikwe lwayimephu yemibala, ekufuneka itolikwe ngugqirha. Ukusuka kwimibala ekhoyo, ugqirha unokujonga utshintsho:

• Ubomvu kunye neorenji zibonisa ukugoba okukhulu;
• Umbala oluhlaza okwesibhakabhaka, o-violet noluhlaza ubonakalisa ukujika okuthe tyaba.

Yiyo ke loo nto, imephu ebomvu ngakumbi kunye noorenji, kokukhona utshintsho kwi-cornea, lubonisa ukuba kunyanzelekile ukuba kwenziwe olunye uvavanyo ukugqibezela isifo kunye nokuqala unyango olufanelekileyo.