Arotahi whakamua

Te nuinga o te iwi i muri i nga tau e wha i raruraru ki arotahi tona tirohanga, whakaputaina i tawhiti tata. huaina ana tēnei huru te whēkaro. E mōhio ki taua mea rite ki te farsightedness tau ano matou. Tūroro ki hyperopia, ki runga ki te wa e kore te raruraru, ko te ki te huihui ki te āwhina o mōhiti, whai ki te hoko me-arotahi. Myopic, e mate ana i te myopia, Me ki arotahi kite i runga i tawhiti poto i roto i te ngā tango.

āhuatanga whēkaro e te kaha o te haereraa tamau, me te tae te mōrahi o ona faaiteraa ki tau e ono tekau ranei e ono tekau ma rima. āta, Ko te tawhiti i i kitea te ahanoa te mārama whakanuia ana. I roto i te heke mai tata ka rapua e te hoko o te rua anō o mōhiti. Me ratou ki tiro i tawhiti i roto i te taikaha o te wha tekau ki te rima tekau henimita. Ētahi tūroro whiwhi toru ranei wha o mōhiti, e kua whakamahia i roto i ngā āhuatanga rerekē takirua. Ētahi - mo pānui, te atu - mo tō rorohiko, me etahi atu - no te taraiwa, a na i runga i.

mōhiti Progressive Ko te taputapu hou hangaia ki te whakatika i whēkaro. Ratou whakaaro matua ko te taea o te whakakitenga o ngā i tawhiti rerekē. He multifocal i roto ia ratou arotahi Progressive. E wehea ratou ki te maha rāngai.

arotahi whakamua i roto i tona rohe i runga, hangaia mō te kitenga ahanoa e kei tawhiti atu i te kanohi. Ko te aroaro o tenei rāngai taea ki te titiro i mua, i te tiaki i te tūranga tūturu o te matenga. Ko te wahi o raro o tenei arotahi te hangaia mo te whakakitenga i tawhiti tata. Hei whakamahi i te reira, titiro tuku iho ki raro. I waenganui i te rohe o runga me raro i reira ko te rerekētanga o te mana dioptric, ka karanga he mana tāpiri. Reira e kore te tikanga e nui ake rua, e toru diopters. I waenganui i ngā rohe kei haereraa kauhanga. taui pai tōna kaha whatu, tuku ki a koutou te whakarato i tētahi mārama whakakitenga o ngā i tawhiti reo. e kore e arotahi Progressive i runga i nga taha o te mara tikanga mo te titiro e tika ana ki te distortion whatu nui.

mōhiti Modern i ratou painga, ahakoa whai ratou etahi drawbacks. arotahi whakamua, e whakaaro arotake te pea o te kite pai o ngā i tawhiti rerekē, tukua tetahi anake rua o mōhiti. Ka taea e ratou te pānui i, mahi i te aroturuki rorohiko, haere ki te whare tapere me te ki te mahi i te mīhini. e kore e hoatu e arotahi Progressive he peke koi i roto i te whakapakoko i te wa, ka whakamaoritia ko te whakaaro i ngā tawhiti ki tata, whakawhetai ki te kauhanga roa haereraa.

Ko te nuinga o ngā kaiwhakanao tuku mōhiti hou hanga o ngā rauemi rerekē, me te hokona i roto i ngā rōpū utu rerekē. Hei tauira, e taea te hangaia arotahi whakamua i te karaihe, me te kirihou. kia waiho ratou photochromic ka whai hoahoa aspheric.

Ko te drawback tino nui o mōhiti whakamua i runga i urupare kaiwhakamahi, ka taea te whakaaro he wāhi iti-rahi i rongoa mo te whakaaro o ngā tūemi i tawhiti reo, kia rite ki te pai kia rite ki te rängai o te distortion piringa.