Ithemetri

I-Tonometry luvavanyo lokulinganisa uxinzelelo ngaphakathi kwamehlo akho. Uvavanyo lusetyenziselwa ukukrola kwi-glaucoma. Isetyenziselwa ukulinganisa ukuba unyango lwe-glaucoma lusebenza njani.

Zintathu iindlela eziphambili zokulinganisa uxinzelelo lwamehlo.

Eyona ndlela ichanekileyo yokulinganisa amandla afunekayo ukucaba indawo ye-cornea.

• Umphezulu wamehlo anqabile ngamathontsi wamehlo. Isiqwenga sephepha esiqatywe idayi yeorenji sibanjwa ecaleni kweliso. Idayi ibala ngaphambili kwamehlo ukunceda kuvavanyo. Ngamanye amaxesha idayi ikumachaphaza amdaka.
• Uya kuphumla isilevu sakho kunye nebunzi ngenkxaso yesibane esityunjiweyo ukuze intloko yakho izinze. Uya kucelwa ukuba ugcine amehlo akho evulekile kwaye ujonge ngqo phambili. Isibane sihanjiselwa phambili de incam yetonometer ichukumise nje i-cornea.
• Ukukhanya okuluhlaza okwesibhakabhaka kusetyenziswa ukuze idayi yeorenji ikhanye ngokuluhlaza. Umboneleli wezempilo ujonga kwiliso elikwisibane esikrelekrele kwaye ahlengahlengise ukucofa kumatshini ukunika uxinzelelo lokufunda.
• Akukho buhlungu kuvavanyo.

Indlela yesibini isebenzisa isixhobo esiphathwayo esenziwe njengepensile. Unikwa amathontsi wamehlo abindayo ukukhusela nakuphi na ukungahambi kakuhle. Isixhobo sichukumisa umphezulu we-cornea kwaye ubhala kwangoko uxinzelelo lwamehlo.

Indlela yokugqibela yindlela engadibaniyo (ukukhupha umoya). Ngale ndlela, isilevu sakho sihlala kwisixhobo esifana nesibane sokukroba.

• Ujonge ngqo kwisixhobo sokuvavanya. Xa ukude kumgama ochanekileyo ukusuka kwisixhobo, ukukhanya okuncinci kukhanya kukhanyise inwebu yakho kumtshina.
• Xa uvavanyo lwenziwe, ukukhukhuma komoya kuya kuyicaba kancinci i-cornea; Ingakanani i-flattens exhomekeke kwingcinezelo yamehlo.
• Oku kubangela ukuba umqadi omncinci wokukhanya uhambele kwindawo eyahlukileyo kumtshini. Isixhobo sibala uxinzelelo lwamehlo ngokujonga ukuba umgama wokukhanya ushukume kangakanani.

Susa iilensi zonxibelelwano ngaphambi koviwo. Idayi inokucoca ngokusisigxina iilensi zonxibelelwano.

Xelela umboneleli wakho ukuba unembali yezilonda ze-corneal okanye usulelo lwamehlo, okanye imbali ye-glaucoma kusapho lwakho. Soloko uxelela umboneleli wakho ukuba ngawaphi amayeza owasebenzisayo.

Ukuba kusetyenziswe amathontsi wamehlo abindayo, akufuneki ube nazintlungu. Kwindlela engadibaniyo, unokuziva uxinzelelo oluncinci kwiliso lakho ukusuka kumoya womoya.

I-Tonometry luvavanyo lokulinganisa uxinzelelo ngaphakathi kwamehlo akho. Uvavanyo lusetyenziselwa ukukrola i-glaucoma kunye nokulinganisa ukuba unyango lwe-glaucoma lusebenza njani.

Abantu abangaphezu kweminyaka engama-40, ngakumbi ama-Afrika aseMelika, banomngcipheko omkhulu wokuphuhlisa i-glaucoma. Ukuvavanywa kwamehlo rhoqo kunokunceda ukufumanisa i-glaucoma kwangoko. Ukuba ifunyenwe kwangethuba, i-glaucoma inokunyangwa ngaphambi kokuba kwenziwe umonakalo omkhulu.

Uvavanyo luyakwenziwa ngaphambi nasemva kotyando lwamehlo.

Iziphumo eziqhelekileyo zithetha ukuba uxinzelelo lwamehlo akho kuluhlu oluqhelekileyo. Uluhlu oluqhelekileyo loxinzelelo lwamehlo li-10 ukuya kuma-21 mm Hg.

Ubungakanani be-cornea yakho inokuchaphazela imilinganiselo. Amehlo aqhelekileyo ane-corneas eshinyeneyo anokufundwa okuphezulu, kwaye amehlo aqhelekileyo ane-corneas ezibhityileyo anokufunda okungaphantsi. I-cornea encinci kunye nokufunda okuphezulu kunokuba yinto engaqhelekanga (uxinzelelo lwamehlo luya kuba phezulu kunokuba kuboniswe kwi-tonometer).

Ukulinganisa ubungakanani be-corneal (pachymetry) kuyafuneka ukufumana umlinganiso ochanekileyo woxinzelelo.

Thetha nogqirha wakho malunga nentsingiselo yeziphumo zakho zovavanyo.

Iziphumo ezingaqhelekanga zinokubangelwa:

• Iglaucoma
• I-Hyphema (igazi kwigumbi elingaphambili leso)
• Ukudumba kwiliso
• Ukwenzakala kwiliso okanye entloko

Ukuba kusetyenziswa indlela yokubala, kukho ithuba elincinci lokuba i-cornea inokukrwempa (i-corneal abrasion). Isikrelemnqa esiqhelekileyo siyakuphilisa kwiintsuku nje ezimbalwa.

Uxinzelelo lwe-Intraocular (IOP); Uvavanyo lweglaucoma; I-tonometry yegolide yaseGoldmann (GAT)

• Iliso

IBowling B.I glaucoma. Ku: Bowling B, ed. I-Ophthalmology yeklinikhi yaseKanski. Ngomhla we-8. IPhiladelphia, PA: Elsevier; 2016: isahluko 10.

IKnoop KJ, uDennis WR. Iinkqubo zamehlo. Ku: Roberts JR, Custalow CB, Thomsen TW, ii-eds. Iinkqubo zeKlinikhi zikaRoberts kunye neHedges kwiNyango kaXakeka kunye noKhathalelo oluQhelekileyo. Umhla wesi-7. IPhiladelphia, PA: Elsevier; I-2019: isahluko 62.

U-Lee D, uYung ES, uKatz LJ. Uviwo lwezonyango lweglaucoma. Ku: Yanoff M, Duker JS, ii-eds. Ophthalmology. Umhla we-5. IPhiladelphia, PA: Elsevier; I-2019: isahluko 10.4.