I-Tonometry

I-Tonometry isivivinyo ukukala ingcindezi ngaphakathi kwamehlo akho. Ukuhlolwa kusetshenziselwa ukuhlola i-glaucoma. Ibuye isetshenziselwe ukukala ukuthi ukwelashwa kwe-glaucoma kusebenza kanjani.

Kunezindlela ezintathu eziyinhloko zokulinganisa umfutho wamehlo.

Indlela enembile kunazo zonke ilinganisa amandla adingekayo ukwenza indawo ye-cornea ibhebhe.

• Ingxenye yeso iboshwe ngamaconsi wamehlo. Umucu wephepha onamabala ombala owolintshi ubanjelwe eceleni kweso. Idayi ibala ngaphambili kweso ukusiza ekuhlolweni. Kwesinye isikhathi idayi isemaconsi endikindiki.
• Uzobeka isilevu nesiphongo sakho ekusekelweni kwesibani esinqunyiwe ukuze ikhanda lakho lizinze. Uzocelwa ukuthi ugcine amehlo akho evulekile futhi ubheke phambili ngqo. Isibani sihanjiswa phambili kuze kube yilapho ichopho le-tonometer lithinta nje i-cornea.
• Kusetshenziswa ukukhanya okuluhlaza okwesibhakabhaka ukuze udayi osawolintshi ukhanye uluhlaza. Umhlinzeki wezokunakekelwa kwempilo ubheka isiqeshana seso esikulayini yesibani bese elungisa ukudayela emshinini ukuze kufundwe ingcindezi.
• Akukho ukungaphatheki kahle ngokuhlolwa.

Indlela yesibili isebenzisa into ephethwe ngesandla efana nepensela. Unikezwa amaconsi wamehlo abuthaka ukuvimbela noma yikuphi ukungaphatheki kahle. Umshini uthinta ubuso be-cornea bese uqopha ngaso leso sikhathi ingcindezi yamehlo.

Indlela yokugcina indlela engathintani (i-air puff). Ngale ndlela, isilevu sakho sihlala kudivayisi efana nesibani esinqunyiwe.

• Ugqolozela ngqo ocwaningweni. Uma ukude nebanga elifanele kulelo thuluzi, umsebe omncane wokukhanya ukhanyisela i-cornea yakho kumtshina.
• Lapho isivivinyo senziwa, ukuqhuma komoya kuyothambisa kancane i-cornea; ukuthi iflattens kungakanani kuncike ekucindezelweni kweso.
• Lokhu kubangela ukuthi umsebe omncane wokukhanya uthuthele endaweni ehlukile kumtshina. Insimbi ibala umfutho wamehlo ngokubheka ukuthi ugesi wokukhanya ususwe kangakanani.

Susa amalensi wokuxhumana ngaphambi kokuhlolwa. Idayi ingabala ama-lens wokuxhumana unomphela.

Tshela umhlinzeki wakho uma unomlando wezilonda ze-corneal noma izifo zamehlo, noma umlando we-glaucoma emndenini wakho. Njalo utshele umhlinzeki wakho ukuthi yimiphi imithi oyiphuzayo.

Uma kusetshenziswe amathonsi wamehlo abilayo, akufanele ube nobuhlungu. Ngendlela engathintani, ungazizwa ukucindezelwa okuncane esweni lakho kusuka ekukhunjeni komoya.

I-Tonometry isivivinyo ukukala ingcindezi ngaphakathi kwamehlo akho. Ukuhlola kusetshenziselwa ukuhlola i-glaucoma nokukala ukuthi ukwelashwa kwe-glaucoma kusebenza kanjani.

Abantu abangaphezu kweminyaka engama-40, ikakhulukazi abase-Afrika baseMelika, basengozini enkulu yokuthola i-glaucoma. Ukuhlolwa kwamehlo njalo kungasiza ukuthola i-glaucoma kusenesikhathi. Uma itholwe kusenesikhathi, i-glaucoma ingelashwa ngaphambi kokuba kwenziwe umonakalo omkhulu.

Ukuhlolwa kungenziwa futhi ngaphambi nangemva kokuhlinzwa kwamehlo.

Umphumela ojwayelekile usho ukuthi ukucindezelwa kwamehlo kwakho kungaphakathi kwebanga elijwayelekile. Ibanga lokucindezela iso elijwayelekile liyi-10 kuye ku-21 mm Hg.

Ubukhulu be-cornea yakho bungathinta ukukalwa. Amehlo ajwayelekile anama-corneas aminyene anokufundwa okuphezulu, futhi amehlo ajwayelekile anama-corneas amancane anokufundwa okuphansi. I-cornea ezacile enokufunda okuphezulu ingahle ingajwayelekile (ingcindezi yamehlo yangempela izoba phezulu kunokukhonjiswa ku-tonometer).

Isilinganiso sobukhulu be-corneal (pachymetry) siyadingeka ukuthola isilinganiso esifanelekile sengcindezi.

Khuluma nodokotela wakho mayelana nencazelo yemiphumela yakho ethile yokuhlolwa.

Imiphumela engajwayelekile ingabangelwa:

• I-Glaucoma
• I-Hyphema (igazi egumbini langaphambili leso)
• Ukuvuvukala esweni
• Ukulimala esweni noma ekhanda

Uma kusetshenziswa indlela yokuqokwa, kunamathuba amancane okuthi i-cornea ingaklwebheka (i-corneal abrasion). Ukuklwebheka kuzophola kungakapheli izinsuku ezimbalwa.

Isilinganiso se-Intraocular pressure (IOP); Ukuhlolwa kwe-glaucoma; I-Goldmann applanation tonometry (GAT)

• Iso

I-Bowling B. I-Glaucoma. Ku: Bowling B, ed. IKanski’s Clinical Ophthalmology. Umhlaka 8. IPhiladelphia, PA: Elsevier; 2016: isahluko 10.

UKnoop KJ, uDennis WR. Izinqubo ze-ophthalmologic. Ku: Roberts JR, Custalow CB, Thomsen TW, ama-eds. Izinqubo Zomtholampilo zikaRoberts noHedges ku-Emergency Medicine kanye ne-Acute Care. Umhla wesi-7. IPhiladelphia, PA: Elsevier; 2019: isahluko 62.

U-Lee D, Yung ES, Katz LJ. Ukuhlolwa komtholampilo kwe-glaucoma. Ku: Yanoff M, Duker JS, ama-eds. I-Ophthalmology. Umhlaka 5. IPhiladelphia, PA: Elsevier; 2019: isahluko 10.4.