Magirazi emaziso akagadzirwa rini chaizvo?
Kunyangwe zvinyorwa zvakawanda zvichiti magirazi emaziso akagadzirwa muna 1317, pfungwa yemagirazi ingangodaro yakatanga kare muna 1000 BC Mamwe mashoko anotiwo Benjamin Franklin akagadzira magirazi, uye kunyange zvazvo akagadzira magirazi maviri, mugadziri uyu ane mukurumbira haagoni kunzi ndiye akagadzira magirazi akawanda.
Munyika umo 60% yevanhu vanoda magirazi ekugadzirisa kuti vaone zvakajeka, zvakaoma kufungidzira nguva apo magirazi emaziso akanga asipo.
Zvinhu zvipi zvaishandiswa pakutanga kugadzira magirazi?
Magirazi ekuona akasiyana zvishoma nemagirazi atinoona nhasi — kunyangwe ekutanga akasiyana kubva patsika kuenda patsika.
Vagadziri vakasiyana-siyana vaiva nemazano avo ekuvandudza kuona vachishandisa zvimwe zvinhu. Semuenzaniso, vaRoma vekare vaiziva kugadzira magirazi uye vaishandisa zvinhu izvozvo kugadzira magirazi avo ega.
Vagadziri vematombo vekuItaly vakakurumidza kuziva kuti dombo rinogona kugadzirwa kuti rive rakakombama kana kuti rakakombama kuti ripe rubatsiro rwakasiyana rwekuona kune avo vane matambudziko akasiyana ekuona.
Nhasi uno, magirazi egirazi anowanzo kuve epurasitiki kana girazi uye mafuremu anogona kugadzirwa nesimbi, purasitiki, huni uye kunyange kofi yakakuyiwa (kwete, Starbucks haisi kutengesa magirazi - haisati yasvika).
Kushanduka kwemagirazi emaziso
Magirazi ekutanga aingoshandiswa chete, asi handizvo zvazviri nhasi.
Nekuti vanhu vane marudzi akasiyana ekutadza kuona —myopia(kuona zviri pedyo),hyperopia(kuona zviri kure),astigmatism,amblyopia(lazy eye) nezvimwewo — magirazi akasiyana-siyana emaziso ava kugadzirisa zvikanganiso izvi zvekusagona kuona zvakanaka.
Izvi zvinotevera ndedzimwe nzira dzakashandiswa nemagirazi pakuvandudza nekufamba kwenguva:
Mafocal maviri:Kunyange zvazvo magirazi e convex achibatsira avo vane myopia uyemagirazi akakombamahyperopia chaiyo uye presbyopia, pakanga pasina mhinduro imwe chete yekubatsira avo vaitambura nemarudzi ese ekutadza kuona kusvika muna 1784. Mazvita, Benjamin Franklin!
Matatu:Makore makumi mashanu mushure mekugadzirwa kwebifocals, matrifocals akatanga kuonekwa. Muna 1827, John Isaac Hawkins akagadzira malenzi aibatsira vanhu vane chirwere chakakomba.presbyopia, chirwere chekuona chinowanzoonekwa mushure memakore makumi mana. Presbyopia inokanganisa kugona kwemunhu kuona zviri pedyo (menyu, makadhi ekubika, mameseji).
Magirazi ane polarized:Edwin H. Land akagadzira magirazi ane polarized muna 1936. Akashandisa polaroid filter paaigadzira magirazi ake ezuva. Polarization inopa kugona kudzivirira kupenya uye nyaradzo yekuona zviri nani. Kune avo vanoda zvisikwa, magirazi ane polarized anopa nzira yekunakidzwa zviri nani nezvinhu zvekunze, sengekubata hoveuye mitambo yemumvura, nekuwedzera kuonekwa.
Magirazi anofambira mberi:Kufanana ne bifocals ne trifocals,magirazi anofambira mberivane simba remalenzi akawanda kune vanhu vane dambudziko rekuona zvakajeka vari kure kwakasiyana. Zvisinei, malenzi eprogressive anopa chitarisiko chakachena uye chisina musono nekufambira mberi zvishoma nezvishoma musimba pane lenzi yega yega - sarai zvakanaka!
Magirazi ePhotochromic: Magirazi ePhotochromic, inonziwo malenzi ekuchinja, anosviba kana apiswa nezuva uye anoramba akajeka mumba. Malenzi ephotochromic akagadzirwa muma1960, asi akatanga kufarirwa mukutanga kwema2000.
Magirazi ebhuruu anovharira chiedza:Kubva pakatanga kushandiswa makombiyuta mudzimba muma1980 (tisingatauri nezvemaTV kare uye mafoni emazuva ano), kutaurirana kwemafoni edhijitari kwave kwakawanda. Nekudzivirira maziso ako kubva kuchiedza chebhuruu chinokuvadza chinobva kumascreen,magirazi ebhuruuzvinogona kubatsira kudzivirira kushushikana kwemaziso uye kukanganiswa kwemaitiro ako ekurara.
Kana muchida kuziva mamwe marudzi emalenzi, ndapota tarisai mapeji edu pano.https://www.universeoptical.com/stock-lens/.