Iimpawu ze-Astigmatism kunye nendlela yokuNyanga

Umxholo

• Iimpawu eziphambili
• Iimpawu ze-astigmatism yeentsana
• Yintoni enokubangela i-astigmatism
• Unyango lwenziwa njani

Umbono omfiliba, ubuntununtunu ekukhanyeni, ubunzima ekwahlukeni iileta ezifanayo kunye nokudinwa emehlweni zezona mpawu ziphambili ze-astigmatism. Emntwaneni, le ngxaki yombono inokubonwa ekusebenzeni komntwana esikolweni okanye kwimikhwa, enje, umzekelo, ukuvala amehlo akho ukuze ubone into ebhetele kude, umzekelo.

I-Astigmatism yingxaki yombono eyenzeka ngenxa yotshintsho kwi-cornea egoso, ebangela ukuba imifanekiso yenziwe ngendlela engagxilwe. Qonda ukuba yintoni i-astigmatism kunye nendlela yokuyinyanga.

Iimpawu eziphambili

Iimpawu ze-astigmatism zivela xa i-cornea yelinye okanye omabini amehlo etshintshile kwi-curvature yayo, ivelisa uninzi lweendawo ekugxilwe kuzo kwi-retina ebangela ukuba ulwandiso lwento ebonwayo lube mfiliba. Ke, imiqondiso yokuqala ye-astigmatism ibandakanya:

• Umbono omfiliba, unobumba odidekileyo ofanayo, onje ngo-H, M okanye N;
• Ukudinwa okugqithisileyo emehlweni ngexesha lokufunda;
• Ukukrazula xa uzama ukubona kugxilwe;
• Uhlobo lwamehlo;
• Uvakalelo olugqithisileyo ekukhanyeni.

Ezinye iimpawu, ezinje ngentsimi egqwethekileyo yombono kunye nentloko, zinokuvela xa umntu ene-astigmatism enesidanga esiphezulu okanye enxulunyaniswa nezinye iingxaki zombono, ezinje ngehyperopia okanye i-myopia, umzekelo. Funda umahluko phakathi kwe-hyperopia, myopia kunye ne-astigmatism.

Iimpawu ze-astigmatism yeentsana

Iimpawu zobuntwana be-astigmatism zisenokungabi lula ukuyichonga kuba umntwana akayazi enye indlela yokubona kwaye, ngenxa yoko, akanako ukuxela iimpawu.

Nangona kunjalo, ezinye zeempawu ekufuneka bazazi abazali zezi:

• Umntwana uzisa izinto kufutshane kakhulu ebusweni ukuze abone ngcono;
• Ubeka ubuso bakhe kufutshane kakhulu neencwadi kunye neemagazini ukuba zifundwe;
• Vala amehlo akho ukuze ubone ngcono ukude;
• Ubunzima bokugxila esikolweni kunye namabanga aphantsi.

Abantwana ababonisa le miqondiso kufuneka bathathwe baye kugqirha wamehlo bayokuvavanywa iliso kwaye, ukuba kukho imfuneko, baqale ukunxiba iiglasi. Fumanisa ukuba uvavanyo lwamehlo lwenziwa njani.

Yintoni enokubangela i-astigmatism

I-Astigmatism yingxaki yombono welifa elinokuchongwa xa kuzalwa, nangona kunjalo, uninzi lwamaxesha, kuqinisekiswa kuphela ebuntwaneni okanye ebusheni xa umntu exela ukuba akaboni kakuhle, kwaye unokuba neziphumo ezibi esikolweni, kuba umzekelo.

Ngaphandle kokuba sisifo esifa, i-astigmatism inokuvela ngenxa yokubethwa ngamehlo, izifo zamehlo, ezinje nge-keratoconus, umzekelo, okanye ngenxa yotyando olungaphumelelanga. I-Astigmatism ihlala ingabangelwa kukusondela kakhulu kumabonwakude okanye ukusebenzisa ikhompyuter iiyure ezininzi, umzekelo.

Unyango lwenziwa njani

Unyango lwe-astigmatism lumiselwa ngugqirha wamehlo kwaye lwenziwa ngokusetyenziswa kweiglasi okanye iilensi zonxibelelwano ezikuvumela ukuba uhlengahlengise umbono ngokwenqanaba lomntu lowo.

Nangona kunjalo, kwiimeko ezinzima kakhulu ze-astigmatism, utyando lunokucetyiswa ukuze kuguqulwe i-cornea kwaye ngaloo ndlela kuphuculwe umbono. Ugqirha, nangona kunjalo, kucetyiswa kuphela kubantu abazinzise isidanga sabo ubuncinci unyaka omnye okanye ngaphezulu kweminyaka eyi-18. Funda ngakumbi malunga notyando lwe-astigmatism.