Unyango ukubona kunye noonobangela izifo

Isifo Iliso iqhelekileyo phakathi kwabantwana zale mihla abantu abadala na myopic. unyango sifo kufuneka yenziwe ngexesha elifanelekileyo ukuze bazuze iziphumo ezihle.

Isifo kunciphisa ebantwini-kakuhle elifutshane ubuchule bokwahlula izinto zibekwe mgama, ngokwahlukileyo kumntu enempilo eyahlula okulungileyo yonke kude ngenxa yokuba kulindeleke umfanekiselo kummandla wacela retina. Kwaye xa ukubona (ukubona) yenzeka deformation lens yahluka umgama woqondo ngamehlo, ebangela umfanekiso projektha kwi-moya ibekwe phambi kwiretina, ezikhokelela uxoxa yayo ungapheleli.

unyango ukubona kunye noonobangela izifo

Kukho izinto ezahlukeneyo ezibangela uphuhliso sifo. Xa sikrini lens nithetha ukubona yezihlunu. Kwakhona wafumana ukubona (zokunganyangeki), unobangela yona extra refraction ukukhanya lingene emehlweni. Umthombo ukubona kudla kubonakala kakhulu isixhobo force zokunganyangeki.

Ukubona ahluka yi iqondo ubungnqongqo. degree obuthathaka ophakamayo ukuhla diopters ezintathu, lo umlinganiselo ukuya diopters-6, yaye xa ukonakala ukuya diopters-20 nangaphezulu kuyo ukubona olomeleleyo. Ngokuqhelekileyo xa amaxabiso aphezulu abonisa indlela qondo liphezulu, yaye manani angentla diopters 30 yimfama ngokulinganayo.

Ukubona: unyango

Nge unyango ngexesha ugqirha uyakwazi ukususa phantse naluphi na uhlobo lwesifo, inzuzo kwezixhobo zisenza ukuba senze oku ukuba ukuqhubela phambili kwesifo.

Eyona ethandwayo indlela yokuqala ulungiso umbono ukhetho kunye ukunxitywa iindondo okanye lenses contact. Bona ezikhethiweyo ukwenzela ukunciphisa isiphumo refraction, kwaye thumela umfanekiso ukuya kwindawo wacela retina eya kuqinisekisa kwakhona ukucaciselwa. Nangona kunjalo, kwiimeko iindondo ezinamandla ukubona akayi kuvumela ukwenza ulungiso umbono ukuya kwinqanaba eliphezulu. Kwiimeko ezinjalo, isiphumo okukhulu unyango laser ngayo ukubona.

Izinto ezibangela ukubona

Kwiimeko ezinqabe kakhulu, isifo naso. Amaninzi, ukubona kuphuhliswa ubomi yaye kwenzeka xa abantwana sele kwithuba yesikolo, nini, ngenxa izifundo zakhe, iikhompyutha, iincwadi, kwandisa kakhulu uxinezeleko kwi izixhobo ezibonwayo. Iinkcukacha-manani zibonisa ukuba ngaphezu kwesiqingatha kwiiklasi zabafundi abadala abafundi banxibe iiglasi nje ngenxa ukubona ngobulali ezifunyenwe.

Ukuba isifo siqhuba lukwasetyenziswa ukuvavanya ukubona oluncediswayo, wonke unyaka unyango laser isenokuba isisombululo kuphela echanekileyo kwiingxaki.

ubungozi

Ngokutsho oogqirha, unobangela engundoqo sifo ilifa. Phambi sifo ubuncinane omnye wabazali lwengozi ukubona kwandisa izihlandlo eziliqela sele elivisayo okanye ebuntwaneni. ongaboniyo, ukongeza kakubi ikhompyutha kunye TV kunegalelo intsilelo kwi iivithamini ukudla imihla ngemihla.

Imiba yomngcipheko ziquka umthwalo olwandileyo umbono kumatshini kunye nokukhethwa engafanelekanga izibuko.

ukubona lobuxoki

Xa abantu abaselula kunye nabantwana yeyona ixhaphakileyo spasm yokuhlala, nto leyo kuphazamisa izihlunu iliso, okubangela kuphulukana ukukwazi ukwahlula izinto kumgama ezikufutshane. Ezi ukunyhashwa zabonakala kwindlela wonke umfundi wesithandathu.

Uphuhliso ukubona lobuxoki igalelo nokwanda umthwalo ezibonwayo, indawo yokusebenzela ekhanya, nokungalali, ukungabikho ehamba esitratweni, imposiso ye amanakani okuba kunye nezihlunu wesibeleko, kusekho vitamin, isondlo engafanelekanga. ukubona lobuxoki ukuze kuvakalisa kuphuhliso ukubona.