Uvavanyo lwamehlo: ukuba lwenziwa njani kunye neentlobo eziphambili

Umxholo

• Uyenza kanjani uvavanyo lwamehlo ekhaya
• Lithini ixabiso loviwo lobungcali
• Ezona ntlobo ziphambili zovavanyo lwamehlo
• Uya nini kwagqirha

Uvavanyo lwamehlo, okanye uvavanyo lwamehlo, lisebenza ukuvavanya ukubonwa kwaye, nangona lunokwenziwa ekhaya, kufuneka luhlale lusenziwa ngugqirha wamehlo, kuba nguye kuphela onokufumana isifo esichanekileyo kwaye avavanye impilo yamehlo.

Zininzi iindidi zeemviwo zamehlo, nangona kunjalo, olona luqhelekileyo luvavanyo lokuvavanya amandla okubona kufutshane nakude kwaye, kufuneka kwenziwe kube kanye ngonyaka ukusukela kwiminyaka engama-40, nokuba sele unxibe iiglasi, kuba inqanaba leiglasi linokuthi litshintshe, lifuna ukonyuswa okanye ukwehliswa, kuxhomekeke kwimeko.

Kuyacetyiswa ukuba wenze olu hlobo lovavanyo nanini na xa kuvela ubunzima bokubona, njengentloko ebuhlungu okanye amehlo abomvu, umzekelo. Jonga uluhlu olupheleleyo lweempawu ezinokubonisa iingxaki zombono.

Uyenza kanjani uvavanyo lwamehlo ekhaya

Ukwenza uvavanyo lwamehlo ekhaya landela nje le miyalelo ingezantsi:

1. Zibeke kumgama ukusuka ekubekeni esweni kuboniswe kule theyibhile ingezantsi;
2. Jonga umfanekiso kwaye uvale iliso lasekhohlo ngesandla sasekhohlo, ngaphandle kokufaka uxinzelelo. Ukuba unxiba iiglasi okanye iilensi, sukuzisusa ukuze zivavanywe;
3. Zama ukufunda oonobumba bomfanekiso ukusuka phezulu kuye ezantsi;
4. Phinda inkqubo kwiliso lasekunene.

Umgama wokubekwa kweliso okucetyiswayo kolu vavanyo:

Ukuba uyakwazi ukufunda ukuya kumgca wokugqibela ngamehlo omabini, amandla okubonakalayo yi-100%, kodwa ukuba awukwazi ukufunda ukuya kumgca wokugqibela ngamehlo omabini, kunokuba yimfuneko ukulungisa umbono wakho. Ukulungiselela le nto, kucetyiswa ukuba ubonane nodokotela wamehlo ukuqinisekisa inqanaba lombono kunye nokwenza ulungiso oluyimfuneko.

Lithini ixabiso loviwo lobungcali

Ixabiso lovavanyo lwamehlo lingahluka phakathi kwama-reais angama-80 ukuya kwangama-300, kuxhomekeka kuhlobo lovavanyo lwamehlo oluboniswe ngugqirha kunye neofisi apho lwenziwa khona.

Ezona ntlobo ziphambili zovavanyo lwamehlo

Olu hlobo lweemviwo lungohlulwa lube ziindidi ezininzi, ngokwengxaki ozama ukuyichonga. Ezona ziphambili zibandakanya:

• Uvavanyo lukaSnellen: ekwabizwa ngokuba luvavanyo lobukrelekrele, ukuphika okanye umlinganiso wedigri, lolona vavanyo luqhelekileyo lombono kwaye lusetyenziselwa ukuvavanya ukuba umntu ubona kangakanani, kufuneka agcine iileta zesikali, ukuvavanya ubukho be-myopia, hyperopia kunye ne-astigmatism;
• Uvavanyo lwe-Ishihara: Olu vavanyo luvavanya imbonakalo yemibala kwaye, lisebenza ukufumanisa ubumfama bombala, ukuzama ukubona ukuba leliphi inani onokulibona embindini womfanekiso, ujikelezwe yimibala;

• Uvavanyo lwamehlo lwe-OCT: Ukuhambelana kokuhambelana kwetomografi luvavanyo olwenziwa kumatshini kwaye lisetyenziselwa ukufumanisa isifo se-cornea, i-retina kunye ne-vitreous kunye ne-optic nerve.

  
  

Olu vavanyo lubalulekile ukuvavanya isidingo sokunxiba iiglasi, iilensi zonxibelelwano okanye, kwiimeko ezinzima kakhulu, ukuze kwenziwe utyando ukuze uphinde ubone.

Uya nini kwagqirha

Kuyacetyiswa ukuba wenze idinga nengcali yamehlo xa:

• Iimpawu ezinje ngombono ophindwe kabini, amehlo adiniweyo, amabala kumbono okanye iliso elibomvu liyavela;
• Uziva isithunzi kwiso lakho kwaye awuboni mfanekiso ocacileyo;
• Ubona indawo emhlophe ejikeleze izibane zezibane;
• Kunzima ukwahlula imibala yezinto.

Ukongeza, umntu kufuneka aye kwigumbi likaxakeka xa ulwelo luvunyelwe ukuba luwele emehlweni, njengesepha, umzekelo, okanye ukuba kukho ukubetha okubomvu emehlweni, kubonisa ukurhawuzelela, iintlungu kunye nokuqaqamba.