Bifocal lens inogona kunzi multi-chinangwa lens.Iine 2 minda yakasiyana yekuona mune imwe lens inooneka.Iyo hombe yelenzi kazhinji ine chirevo chinodiwa kuti iwe uone kure.Zvisineyi, izvi zvinogona zvakare kuve chirevo chako chekushandiswa kwekombuta kana yepakati, sezvaunowanzo tarisa wakatwasuka paunotarisa nepakati pechikamu ichi chelenzi. Chikamu chezasi, chinonziwo hwindo, kazhinji chine chinyorwa chako chekuverenga.Sezvo iwe uchiwanzo tarisa pasi kuti uverenge, ino ndiyo ine musoro nzvimbo yekuisa iyi siyana yerubatsiro rwekuona.
Kubatsira kweiyo flat-top bifocal lens.
1.Iyi imhando yakanyatsonaka ye lens iyo inobvumira mutakuri kutarisa pazvinhu zvose zviri pedyo uye kure kure kuburikidza ne lens imwe chete.
2.Iri rudzi rwe lens rakagadzirirwa kugonesa kuona zvinhu zviri kure, padhuze uye mukati mepakati nepakati nekuchinja kwesimba kune imwe neimwe chinhambwe.
Zvakanakira zveround-yepamusoro bifocals
1.Vabati vanogona kuona zvinhu zviri pedyo nechimiro chakatenderera uye kuona kureba kwezvinhu nemamwe malenzi.
2.Vapfeki havadi kuchinja magirazi maviri akasiyana ezviratidzo pavanenge vachiverenga bhuku nekuona TV.
3.Vabati vanogona kuchengeta chimiro chakafanana pavanotarisa zvose zviri pedyo kana chinhu chiri kure.
Kana iwe uchikoshesa mhando, kuita uye hunyanzvi iwe wauya kunzvimbo chaiyo.
Index&Zvinhu Zviripo
 Material | NK-55 | Polycarbonate | MR-8 | MR-7 | MR-174 |
 Refractive Index | 1.56 | 1.59 | 1.60 | 1.67 | 1.74 |
 Abbe Value | 35 | 32 | 42 | 32 | 33 |
 Specific Gravity | 1.28g/cm3 | 1.20g/cm3 | 1.30g/cm3 | 1.36g/cm3 | 1.46g/cm3 |
 UV Block | 385nm | 380nm | 395nm | 395nm | 395nm |
 Design | SPH | SPH | SPH/ASP | ASP | ASP |
Bifocal lens inoshanda sei?
Bifocal lenses akakwana kune vanhu vanotambura ne presbyopia- mamiriro ekuti munhu anosangana nekusajeka kana kukanganiswa pedyo nekuona paanenge achiverenga bhuku.Kugadzirisa dambudziko iri rekuona kure uye pedyo, bifocal lenses anoshandiswa.Iwo anoratidza nzvimbo mbiri dzakasiyana dzekugadzirisa chiratidzo, dzinosiyaniswa nemutsara wakayambuka lenzi.Nzvimbo yepamusoro yelenzi inoshandiswa kuona zvinhu zviri kure apo chikamu chepasi chinogadzirisa chiri pedyo-chiono.
