Kuratidza kupofumadza, kana kushaikwa kwemavara, kunoreva kusakwanisa kwomunhu kuti anyatsosiyanisa mamwe mavara. Zvinetso zvepfungwa dzinoonekwa kubva pakusakwanisa kuona mavara akasiyana emuvara kuti asakwanisa kuona mamwe mavara zvachose. Vanhu vazhinji vanofunga zvisiri izvo kuti iyo yakaoma mapofu ndeyekuona nyika muga chete uye mutsvuku , asi huputi hwakazara hupofu hahuwanzoitiki.
Munhu ane ruvara rwemavara kazhinji ane zvinetso zvakasiyana pakati pemirairi tsvuku uye yakasvibirira, achivanyengedza nemuvara wakafanana. Rudzi rwemhando dzisina ruvara rwemuchena runosanganisira mavara ebhuruu uye zhizha.
Zvinokonzera
Kuratidza upofu kunokonzerwa nemasero ari mu retina izvo zvisina kumira mavara. Specialized cone cells, izvo zvinokonzera kuratidzwa kwemavara, hazvikwanise kutumira zviratidzo zvakarurama kuuropi. Kuratidza kupofumadza kunowanzova nhaka. Vanenge masere kubva muzana zvevarume uye chikamu chimwe kubva muzana chevakadzi vane maziso akasaona. Vanhurume vakawanda vanobatwa nehutano kupfuura vakadzi.
Dzimwe nguva, dzimwe zvirwere zemaziso zvinokonzera upofu hwemavara, hunonzi "hune ruvara rwehupenzi." Kukwegura kunogona kukonzerawo chirwere; sezvo lenzi rima nerima, vanhu vakwegura vangawana zvakaoma kusiyanisa mavara.
Zviratidzo
Chiratidzo chikuru chemavara mapofu uhu hwakaoma kusiyanisa pakati pebhuruu uye ruvara rwebhuruu uye ruvara rwehuni.
Vabereki vanowanzoramba vachifungidzira ruvara rwehupenzi kana mwana wavo achiomerwa nokudzidza mavara. Vana vane matambudziko kuchikoro vanofanirwa kuongororwa nehupofu hwemavara, sezvo zvinhu zvakawanda zvokudzidza zvichinyanya kuvimbika kune vadzidzi vanogona kusiyanisa pakati pemarudzi.
Kuziva
Chiedza chakajairika chekuongorora ruvara rwehupofu ndechiedza cheIshihara.
Iyi miedzo inokurumidza uye yakajeka inosanganisira mifananidzo yezvifananidzo zvakagadzirwa nemaruva akavaraidza. Pakati pematombo ndeye chimiro, kazhinji nhamba, yakaumbwa nematombo emuvara wakasiyana. Munhu ane mavara akasiyana-siyana achakwanisa kuona nhamba, asi munhu asina ruvara anoonekwa achaona nhamba yakasiyana kana kuti kwete nhamba zvachose.
Chimwe chiedzo chinoshandiswa kuongorora ruvara rwehuputi chinonzi chirongwa chekugadzirira, umo murwere anokumbirwa kuronga boka rezvivara zvemavara mune imwe nzira.
Kurapa
Zvinosuruvarisa, hapachina mushonga wehupusi hwemvara. Vanhu vane maziso ekuonekwa kwemavara, zvisinei, dzidza nzira dzokugadzirisa dambudziko racho. Varwere vanowanzodzidzisa ivo pachavo kuti vanosiyanisa sei pakati pemarudzi akasiyana-siyana uye mifananidzo yakawanda.
Vamwe vanachiremba vanopa mavara-corrective lenses , zvichienderana nekuoma kwekuonekwa kwemavara. Uyezve, purogiramu yemakombiyuta yakave yakagadzirirwa kubatsira avo vane maonero ekuona mavara.
Kunobva:
American Optometric Association, Mavara Akasiyana. 17 Jul 2007.