CR39 1.49 isina kuvharwa furati yepamusoro bifocal ophthalmic lenzi

Chii chinonzi Bifocal Lenses & Anoshanda Sei?

Kune akawanda akasiyana akasiyana malenzi aripo nhasi, mazhinji acho achizadzisa chinangwa chimwe kana kunyange akawanda zvinangwa.Mumwedzi uno blog post tichakurukura bifocal lenses, mabatiro aanoita, uye kuti mabhenefiti api ndeekukanganiswa kwekuona kwakasiyana.

Bifocal eyeglass lenses ine maviri lens masimba ekukubatsira kuona zvinhu pazvinhambwe zvese mushure mekunge warasikirwa nekugona kushandura kutarisa kwemeso ako nekuda kwezera, inozivikanwawo se presbyopia.Nekuda kweichi basa chairo, bifocal lenzi anonyanya kunyorerwa kune vanhu vanopfuura makore makumi mana kuti vabatsire kutsiva kuderedzwa kwechisikigo kwekuona nekuda kwekuchembera.

Pasinei nechikonzero chaunoda kunyorerwa kuti ugadzirise pedo-yekuona, bifocals ese anoshanda nenzira imwechete.Chikamu chidiki muchikamu chezasi chelenzi chine simba rinodiwa kugadzirisa chiono chako chiri pedyo.Iyo yakasara yelenzi kazhinji ndeye yako yekuona chinhambwe.Chikamu chelens chakatsaurirwa kugadziriso yepedyo-chiono chinogona kuve chimwe chezvimiro zvakati wandei:

• A half-moon - inonziwo flat-top, straight-top or D segment
• Chikamu chakatenderera
• Nzvimbo yakamanikana ine rectangular, inozivikanwa sechikamu cheribhoni
• Iyo yakazara pasi hafu yebifocal lenzi inonzi Franklin, Executive kana E style