How to choose the diameter of your contacts？

Ungakhetha kanjani ububanzi boxhumana nabo?

Ububanzi

Ububanzi boxhumana nabo bakho buyipharamitha ekukhetheni oxhumana nabo. Kuyinhlanganisela yombala nephethini yoxhumana nabo kanye nosayizi wamehlo akho kanye ne-pupil. Uma ububanzi boxhumana nabo bakho bukhulu, umphumela uzoba mkhulu, kodwa akunjalo ukuthi uma ububanzi boxhumana nabo bukhulu, bazobukeka kangcono.

Khetha eyakho

"Ukuvunyelwa komoya-mpilo kwabathintana nabo kuphansi uma kuqhathaniswa namalensi okuxhumana avamile, futhi uma ububanzi belensi yokuxhumana bukhulu kakhulu, kuzothinta ukuhamba kwelensi, okwenza umphumela wokuvunyelwa komoya-mpilo ube mubi nakakhulu."

Nakuba ukuthintana okukhulu kobubanzi kunemiphumela ebonakalayo, akufanelekile kuwo wonke umuntu. Abanye abantu banamehlo amancane kanye ne-pupil elinganayo, ngakho-ke uma bekhetha ukuthintana okukhulu kobubanzi, kuzonciphisa ingxenye emhlophe yeso, okwenza iso libukeke lishesha kakhulu futhi lingakhangi.

Ngokuvamile

Ngokuvamile, uma ufuna umphumela wemvelo, ungakhetha u-13.8mm wamehlo amancane, kanye no-14.0mm kubantu abanamehlo amakhulu kancane. U-14.2mm uzobonakala ucacile kancane kumuntu ojwayelekile, ngakho-ke ungakhetha u-13.8mm-14.0mm womsebenzi wansuku zonke, wesikole, kanye nowokuqomisana.