Chii chinonzi presbyopia?
"Presbyopia" chinhu chakajairika chemuviri chiitiko uye chine hukama nelenzi.Iyo crystalline lens ndeye elastic.Iine elasticity yakanaka kana ichiri mudiki.Ziso remunhu rinokwanisa kuona pedyo nekure kuburikidza nekushanduka kwecrystalline lens.Zvisinei, sezvo zera rinowedzera, crystalline lens zvishoma nezvishoma inoomesa uye inowedzera, uye ipapo elasticity inopera.Panguva imwecheteyo, kukwanisa kwekugadzirisa kwemuviri weciliary kunoderera.Simba rinotarisa reziso reziso richadererawo, uye nzvimbo yekugara ichaderera, uye presbyopia inoitika panguva ino.
Chii chinonzi lenses yevakuru inofambira mberi?
Premium kufambira mberi lenses (akadai Varilux lenses) anowanzo kupa yakanakisa kunyaradza uye kuita, asi kune akawanda mamwe mabhureki zvakare.Nyanzvi yako yekuchengeta maziso inogona kukurukura newe maficha uye mabhenefiti ezvino kufambira mberi lenzi uye kukubatsira iwe kuwana akanakisa lenzi kune zvaunoda chaizvo.
kuona zvinhu zvakajeka pane chero chinhambwe.
Bifocals, kune rumwe rutivi, ine maviri chete lens masimba - imwe yekuona zvinhu zviri kure zvakajeka uye yechipiri simba mune yakaderera.
hafu yelenzi yekuona zvakajeka pachinhambwe chekuverenga.Kusangana pakati penzvimbo idzi dzesimba dzakasiyana
inotsanangurwa neinooneka "bifocal line" inocheka nepakati pelenzi.
Progressive Lens Benefits
Malenzi anofambira mberi, kune rumwe rutivi, ane akawanda akawanda masimba erenzi kupfuura bifocals kana trifocals, uye pane zvishoma nezvishoma shanduko yesimba kubva pane imwe nzvimbo kuenda kunongedzo pamusoro peiyo lens.
Iyo multifocal dhizaini yemalensi anofambira mberi inopa aya akakosha mabhenefiti:
* Inopa chiono chakajeka pamadaro ese (panzvimbo pekungoita maviri kana matatu akasiyana ekuona madaro).
* Inobvisa zvinonetsa "kusvetuka kwemufananidzo" kunokonzerwa ne bifocals uye trifocals.Apa ndipo apo zvinhu zvinongoerekana zvachinja mukujeka uye nzvimbo inooneka apo maziso ako anofamba achiyambuka mitsetse inooneka mumalenzi aya.
* Nekuti hapana "bifocal mitsara" inooneka mumalenzi anofambira mberi, anokupa chitarisiko chepwere kupfuura bifocal kana trifocals.(Ichi chikonzero chega chingava chikonzero nei vanhu vakawanda nhasi vachipfeka lenzi dzinofambira mberi kupfuura nhamba inopfeka bifocal uye trifocals dzakasanganiswa.)
Nguva yekutumira: Oct-14-2022