Ibhityile kwaye ikhaphukhaphu kuneplastiki, iilensi ze-polycarbonate (i-impact-resistant) zinobungqina bokuqhekeza kwaye zibonelela ngokhuseleko lwe-UV oluyi-100%, nto leyo ebenza babe lolona khetho lufanelekileyo kubantwana nakubantu abadala abasebenzayo. Zikwayilungele imimiselo eyomeleleyo kuba abongezi ubungqingqwa xa belungisa umbono, ukunciphisa nakuphi na ukugqwetheka.
Iilensi ze-Bifocal eyeglass ziqulathe amandla eelensi ezimbini ukukunceda ubone izinto kuyo yonke imigama emva kokuba uphulukene namandla okutshintsha ngokwendalo ukugxila kwamehlo akho ngenxa yobudala, ekwabizwa ngokuba yi-presbyopia.
Ngenxa yalo msebenzi ukhethekileyo, iilensi ze-bifocal zidla ngokumiselwa kubantu abangaphezulu kweminyaka engama-40 ukunceda ukubuyisela ukuthotywa kwendalo kombono ngenxa yenkqubo yokuguga.
7.5 Iiyure ngumndilili wexesha lesikrini esilichitha kwizikrini zethu. Kubalulekile ukuba siwakhusele amehlo ethu. Awungekhe uphume ngemini yehlobo enelanga ngaphandle kweendondo zelanga, kutheni ungawakhuseli amehlo akho ekukhanyeni okukhutshwa yiscreen sakho?
Ukukhanya okuluhlaza ngokuqhelekileyo kwaziwa ngokubangela "I-Digital Eye Strain" equka: amehlo omileyo, intloko ebuhlungu, ukubona luzizi, kunye nokuchaphazela kakubi ukulala kwakho. Nokuba awunamava oku, amehlo akho asachatshazelwa kakubi kukukhanya okuluhlaza.
Ukukhanya okuluhlaza okwesibhakabhaka okuvala iilensi ze-bifocal zinamandla amabini ahlukeneyo achazwe ngugqirha kwilensi enye, enika abo bazinxibileyo izibonelelo zeepere ezimbini zeglasi kwenye. Ii-Bifocals zibonelela ngokulula kuba akusekho mfuneko yokuba uphathe iipere ezimbini zeeglasi.
Ngokwesiqhelo ixesha lohlengahlengiso liyafuneka kuninzi lwabanxili abatsha be-bifocal ngenxa yemigqaliselo emibini kwilensi enye. Ngokuhamba kwexesha, amehlo akho aya kufunda ukuhamba ngokulula phakathi kwemigqaliselo emibini njengoko usuka komnye umsebenzi uye komnye. Eyona ndlela ingcono yokufezekisa oku ngokukhawuleza kukunxiba iiglasi ezintsha zokufunda ze-bifocal rhoqo kangangoko, ukuze amehlo akho aziqhelanise nazo.