Ngaba ufuna ukuthenga iilensi ezininzi, kodwa i-lens yakho ye-lens kadokotela iphela? Amehlo akho aziva kakuhle, kwaye oonxibelelwano bakho banokubonakala besebenza kakuhle. Ngoko, ngaba kufuneka uhlawule umyalelo omtsha ukuba umbono wakho ungatshintshi? Kutheni uqhagamshelana nemiyalelo ye-lens iphelelwa yisikhathi?
Liyinyaniso-xa isigqirha sakho somnxeba we-lens siphelelwa yisikhathi, uya kufuneka wenze i-aphoyintimenti kunye ne- optometrist yakho ukuze ufumane ukuhlaziywa.
Ngeke ukwazi ukuthenga ii-lens ezininzi zoqhagamshelwano uze wenze, nangona uthenge nge-intanethi . Ukuba umthengisi wentengiso ye-intanethi uthengisa i-lens ngaphandle kwemvume efanelekileyo, benza njalo ngokungekho mthethweni kwaye kuyacetyiswa ukuba uyeke ukwenza ishishini kunye nabo ukuphepha iingxaki zomthetho.
IiLensi zoLwazi zilawulwa yi-FDA
Iinkcukacha zoqhagamshelwano lwe-lens ziphelelwe yisizathu ngezizathu ezifanayo ukuba imirhumo yezokwelapha iphelelwe. Naliphi na ixesha usebenzisa imveliso yonyango, kufuneka ulandele ugqirha wakho ubuncinane kanye ngonyaka ukufumanisa iingxaki ezinokwenzeka. I-FDA iqwalasela ii-lens zecandelo lezonyango zecandelo lonyango Ngo-2004, kwagqitywa umthetho obeka umhla wokuphela komrhumo womnxeba womnxeba omnye kunyaka, okanye ubuncinci obufunekayo ngumthetho welizwe, nokuba ngowona mkhulu.
Amehlo akho nombono ubonakala uphelele kodwa oko kungabi yiNkundla
Khumbula ukuba i-lens yoqhagamshelwano ngumzimba wangaphandle ofakwe kwiso lakho.
Ilala phezu kwe- cornea -isakhiwo esicacileyo, esifana nesidanga esisekuqaleni kweso lakho. I-lens zoqhagamshelwano zisebenzisana ne-inner tissue lining of eye, ebizwa ngokuba yi-conjunctiva, phantsi kweentloko zakho. Badibana kunye neinyembezi zakho. Sinenhlanhla ukuhlala kwihlabathi lanamhlanje apho ifowuni efana ne-lens edibeneyo yokuthintana nayo ifumaneka lula kwaye ikwazi ukuhambisa imbonakalo efanelekileyo.
Ngamanye amaxesha sikhohlwa ukuba i-lens yoqhagamshelwano iyahambelana ne-cells ephilayo, kodwa isengxube esenziwe ngabantu. Ingqungquthela ephambili yeplastiki yengqondo wena, kodwa kusengumzimba wasemzini kwiso.
IiLensi zoLwazi zokuNxiba ngaphezu koNxibelelwano zingakhokelela kwimiphumo emibi
Nangona i-cornea inikezela ngamandla amaninzi e-iso, yenziwe ngokuphila, iiseli zokuphefumula. Iinkqubo ze-metabolic zenzeka nsuku zonke kwi-cornea, njengokuba kukho umzimba wakho wonke. Ukukhwabanisa kunye nezinto ezilahlekileyo ezivela kwiiseli kwi-cornea zixutywe. Le ngcaciso ngamanye amaxesha ingakhela ngokungenasidingo phantsi kwe-lens yokudibanisa ngokuqinileyo, ukudala indawo enobungozi kwi-cornea yakho.
Ukugqithisa ukugqithisa iilensi zokunxibelelana kunokukhokelela ekwakheni i-lactic acid kwi-cornea, okubangelwa ukuvuvukala. Xa ukuvuvukala kwenzeka, iiseli kwi-cornea zingasasazeka. Iibhakteria kunye neentsholongwane zingakwazi ukungena ngokulula ngoku kwezi ndawo ezinokwenzeka kwi-cornea, mhlawumbi ukudala usulelo kunye nobunqunu. Ukugqithisa ii-lens zokunxibelelana ngokugqithiseleyo kungakhokelela ekunyaneni i-oksijini; Imitsha yegazi entsha iya kuqala ukukhula ibe yi-cornea ukuzama ukuyondla i-oxygen eyidinga.
Oko Okufanele Uyazi
Kubalulekile ukuba unogqirha weliso ubuncinane ujonge i-cornea yakho kanye ngonyaka ukwenzela ukuba uqinisekise ukuba iilensi zakho azibangeli iingxaki kwaye ukuba imishanguzo yakho ichanekile kwiimfuno zakho zangoku.
Ngexesha elizayo xa ushicilela isicatshulwa soqhagamshelwano lwentsimbi, zikhumbuze ukuba ukhusela umboniso wakho ngokugcina impilo yamehlo kwaye ujabulele umbono obhetele kakhulu.
Umthombo:
Umbutho we-American Optometric. Oko Kufuneka Ukwazi NgoLwazi lokuNxibelelana koLondolozo kunye nokuthobela. AOA.com, 2006-09.