How to choose the diameter of your contacts？

Ungakhetha kanjani ububanzi boxhumana nabo?

Ububanzi

Ububanzi boxhumana nabo buyipharamitha ekukhethweni koxhumana nabo. Kuyinhlanganisela yombala nephethini yoxhumana nabo kanye nosayizi wamehlo akho nabafundi. Ubukhulu bobubanzi boxhumana nabo, umphumela uzobonakala kakhulu, kodwa akunjalo ukuthi ubukhulu bobubanzi boxhumana nabo bukhulu, bazobukeka kangcono.

Khetha eyakho

"I-oxygen permeability koxhumana nabo impofu uma iqhathaniswa namalensi okuxhumana avamile, futhi uma ububanzi be-lens yokuxhumana bukhulu kakhulu, kuzothinta ukuhamba kwelensi, okwenza umphumela wokungena komoya-mpilo ube mubi nakakhulu."

Nakuba othintana nabo abanobubanzi obukhulu benomphumela obonakalayo, abafanele wonke umuntu. Abanye abantu banamehlo amancane kanye nomfundi olinganayo, ngakho-ke uma bekhetha ukuxhumana okukhudlwana kobubanzi, bazonciphisa ingxenye emhlophe yeso, okwenza iso libukeke ngokuphazima kweso futhi lingathandeki.

Ngokujwayelekile Ukukhuluma

Ngokuvamile, uma ufuna umphumela wemvelo, ungakhetha u-13.8mm wamehlo amancane, no-14.0mm kubantu abanamehlo amakhudlwana. U-14.2mm uzobukeka obala kancane kumuntu ojwayelekile, ngakho-ke ungakhetha 13.8mm-14.0mm ngomsebenzi wansuku zonke, isikole, nokujola.