Muzviitiko zvakawanda zvekuona kuora mwoyo, myopia (kutarisa mberi) kana hypermetropia (kureva mberi) inoonekwa. Kusarudzwa kwegirazi pasi pezvisina kukodzera izvi zvinotarisirwa kuvadzivisa nekubatsira kuparadzira kana kuunganidza magirazi.
Nzira yekuziva sei diopter pakusarudza magirazi?
Pakusarudzwa kwegirazi murwere ari kure nemamita matanhatu kubva kune imwe nzvimbo yakazara tafura. Ziso rimwe nerimwe rinoongororwa zvakasiyana. Kutanga kubva kumusoro, murwere anoverenga tsamba dzemutsara mumwe nomumwe. Mutsara wokupedzisira waiverenga unoratidza kuonekwa kwehutu. Mushure maizvozvi, kushaya simba (kwenguva yakareba-kutarira), uyezve kusimba (pfupi-tarisa) magirazi emagetsi anoshandiswa kune ziso. Murwere anoverenga mhedziso yekupedzisira zvakare, yaaigona kuona. Simba rakasimba pane girazi rinoratidza chiyero chekutarisa.
Kana zvakaratidzwa zvichinyanyisa kubva pagirazi remhepo, ipapo chiyero chekugona myopia chinotariswa. Izvi zvinoitwa nekubatsirwa kweklasi yekodha. Kana iyo girazi re concave isingabatsiri, chikonzero chekuderera kwemaonero anooneka kunotsanangurwa zvakare.
Mhando dzegorozi dzine diopters
Kune magirazi akasiyana-siyana ane diopters - magirasi-chameleons (photochromic). Vanoshandisa photochromic lenses, iyo inoshandura ruvara, i.e. kusviba, nechisimba chemavirai emisi. Cherechedza kuti mumakamuri akavharidzirwa makamoni haasvibise, sezvo girazi risina kurega kubvumira kubuda kwechivi.
Qualitative chameleon magirasi anopenya mumaminitsi matatu, kumira kweminiti imwe. Muchiitiko ichi, lenzi inofanira kuchinja ruvara panguva imwe chete.
Zvidziviriro zvinodzivirira zvinogonawo kunge zvine diopters. Inoshandiswa mumitambo yakanyanyisa, mabhasikoro, motokari yemitambo, kuputika mumakomo, skydiving, nezvimwewo. Zvavanoita ndezvokuti zvakagadzirwa nezvinhu zvakasimba zvakasimba, saka magirazi aya anochengetedza maziso kubva pakuwana zvikamu zvakasimba.
Zvidziviriro zvidziviriro zvekushambira ne diopters zvinodzivirira kubva kumarayira eVV, uye kupfeka kwakaputika mukati memwenje kunodzivirira kuti vasazununguka. Pakusarudza rudzi urwu rwegirasi, rinofanira kutarirwa mupfungwa kuti mvura inowedzera kusviba kwemasero.
Makirasi ekutyaira ne diopters, kunze kwekugadzirisa maziso, anofanira kuva nechokwadi chekuparadzaniswa kwemahara (polarization), zvichiita kusiyanisa zviri nani. Magirazi akadaro anogonawo kuitwa ne photochromic properties.
Kune vanhu vane maziso asina kunaka, iwe zvino unogona kusarudza kana kuisa magirazi emasikirwo ne diopters. Kuti urege kubvisa zvinetso zvisina kunaka, unoda kusarudza mienzaniso yegorosi-yakaita magirazi (kuitira kuti lenzi iri mumhepo imwe chete pamberi peziso).
Vakawanda pavanenge vachishanda pamakombiyuta vachishandisa makirasi emakombiyuta, ayo, nokuda kwezvipfeko zvakakosha, inoderedza marwadzo pameso. Kana uine zvinetso zvekuona, zvinobvira kubatanidza magirazi akadaro ne contact lens. Imwe nzira ndeyokushandisa makirasi emakombiyuta nemadiopters akakodzera.
Kana iwe usingakwanise kuona zvakanaka, uye saizvozvo kuputika kwemaziso kwakasiyana, magirazi ane diopters akasiyana anosarudzwa.
Kune vanhu vazhinji vane maziso asina kunaka, mapaviri maviri egirasi anodiwa - nokuda kwe "kure" uye "pedyo" (pavanenge vachiverenga). Asi pane mukana wekushandisa rimwe magirazi nemakumbo, zvose pakuverenga uye mune dzimwe nguva. Lenses mumagirazi aya anonzi multifocal.
Pfungwa ne zero diopters (magirazi anowanzogadzirwa) anoshandiswa semafambisirwo emafashoni, kusimbisa mufananidzo.
Kana iwe uchida magirazi efashoni ne dioptries, tapota cherechedza kuti mumwaka unouya mumafashoni ichave magirazi "ziso rekati", "ziso reki dragonfly", magirazi mumapuranga makuru, ane zvipfeko.