I-lens zoqhagamshelwano zilungele ngakumbi kunezibuko, ngenxa yokuba zingabonakali, musa ukucinezela kwibhulorho ekhaleni kunye nasesikhumba emva kweendlebe. Ukongezelela, ukulungiswa kwamehlo akuphelelwanga ngabanye, kukuvumela ukuba ugcine isitayela sakho. Abantu abaqala ukufumana le fowuni kufuneka bazi ngokusesikweni indlela yokufaka ngokufanelekileyo iilensi emehlweni. Oku kuya kuqinisekisa ukuba ithotho yabo ikhululekile, kwaye ngexesha liza kuqhuba ngokukhawuleza inkqubo yokugqoka.
Liliphi icala lokufaka ilensi?
Nokuba ekuqalekeni kwiinkcukacha ezicatshangelwayo kucacile ukuba yiliphi icala elifanele libekwe kwi-cornea.
Ingxenye yangaphandle yeliso ibona i-convex, ukwenzela ukuba i-lens igwebe, kufuneka isetyenziswe ngecala le-concave.
Yintoni endiyidingayo ukuba ndiyazi ngaphambi kokufaka ii-lens zoqhagamshelwano kwamehlo ami okokuqala?
Bobabini abaqalayo kunye nabalimi abanamalente kufuneka bahambelane nale migaqo elandelayo:
- Njalo uqhubeke nenkqubo ngezandla ezihlambulukileyo.
- Gcina i-lens kwizikhonkwane ezikhethekileyo.
- Njalo utshintshe ukucoca amanzi.
- Fumana iilensi kuphela ngokuziqhayisa.
- Faka ifowuni ngaphambi kokuba ufake isicelo sokwenza, ususe - emva kokukususa.
Ungafunda njani ukufaka iilensi zokuxhumana?
Akunzima ukufumana izakhono eziyimfuneko. Kwanele nje amaxesha ambalwa ukuba usebenze phambi kwesibuko, kwaye inkqubo yokubeka nokukhupha izesebe iza kuba lula kwaye zikhawuleze.
Imiyalelo malunga nokufaka ngokufanelekileyo iilensi zokuxhumana :
- Geza izandla zombini kunye nesepha kunye namanzi. Bambisana nabo ngetayili.
- Susa i-lens kwisitya kwaye uyibeke phakathi entendeni.
- Phalaza ucoceko oluncinane phezu kwalo.
- Beka i-lens kwinqonga yesicatshulwa somnwe wesandla esikhokelayo. Kubalulekile ukuba kuncinci kangangoko kunxibelelana kunye nesikhumba kwaye kungabandakanyi. I-lens ifanele ilale nomgca wayo.
- Ngeminwe ephakathi yezandla zomibini zitsala iipilisi ezingaphezulu kunye nezantsi, ngokuvula ngokukhululeka iso. Unokwenza oku ngesandla esisodwa, sikhululekile.
- Namathisela i-lens phakathi kweso lesibini. Kunconywa ukuba ukhangele kude. Kubalulekile ukuba uqaphele ukuba xa ujikezela intloko yakho ngokukhawuleza, i-lens ingeniswa bhetele - ithoxeka kalula kumnwe wakho ngenxa yamandla ombane.
- Susa isalathisi somnwe kwiseli, uqhubeke uphethe iibhokhwe.
- Hambisa iliso, jonga ngeendlela ezahlukeneyo.
- Cima iipilisi uze uqhube iso elincinane, ukuze i-lens itholakale kwi-cornea.
Ukufakela ngokufanelekileyo iilensi kuphelisa naluphi na ukungahambi kakuhle, ukulimala okanye ukuphazamiseka.