1.59 PC Polycarbonate Bifocal Lens
He aha nā Lenses Polycarbonate?
Hoʻokaʻawale ʻia nā lens polycarbonate e ko lākou mau mea paʻa, paʻa ʻole, a i kūkulu ʻia i loko o nā waiwai pale. Hoʻokaʻawale ka pale ʻana iā lākou mai nā aniani aniani ʻē aʻe. ʻO kēia ka mea i koho maikaʻi loa no ka poʻe me nā ʻano ola ʻoi aku ka maʻalahi o ka hāʻule ʻana a i ʻole ka ʻokiʻoki ʻana i ko lākou mau maka aniani. He kūpono hoʻi nā lens polycarbonate no nā maka maka o nā keiki a me nā aniani palekana.
ʻOi aku ka māmā a ʻoi aku ka lahilahi ma mua o nā lens plastik maʻamau a i ʻole aniani, ʻoi aku ka ʻoluʻolu o nā lens polycarbonate e ʻaʻahu a ʻaʻole naʻe e kaumaha i ka maikaʻi. ʻAʻole lākou e hoʻohui i ka mānoanoa no ka hoʻoponopono ʻana i ka ʻike, hoʻemi lākou i ka distortion, a pale lākou i ka 100 pākēneka o ka radiation ultraviolet pōʻino o ka lā (UV kukui).
Ua kūkulu mua ʻia nā aniani me nā aniani polycarbonate i ka makahiki 1980, a ua hoʻomaikaʻi lākou mai ia manawa mai. Hiki ke hoʻopili ʻia nā ʻāpana maʻamau a pau, e like me ka pale anti-reflective, ka pale pale pale, a me nā tints i kēia mau lens.
Pehea e haʻi ai inā makemake ʻoe i nā Bifocals
ʻO ka Presbyopia kahi maʻi e pili ana i ka makahiki e hopena i ka pohō kokoke i ka ʻike. ʻIke pinepine ia me ka mālie; e paʻakikī ana ʻoe e ʻike i kahi puke a i ʻole nūpepa ma kahi kokoke a e neʻe maoli i kahi mamao aku mai kou alo aku i ʻike maopopo ʻia.
Ma kahi o ke 40 o kona mau makahiki, ua nalowale ka lens crystalline i loko o ka maka. I ka wā ʻōpiopio, palupalu a maʻalahi kēia lens, hiki ke hoʻololi maʻalahi i ke ʻano i hiki ke hoʻohuli i ka mālamalama i ka retina. Ma hope o ke 40 makahiki, ʻoi aku ka paʻakikī o ka lens, a ʻaʻole hiki ke hoʻololi maʻalahi i ke ʻano. ʻOi aku ka paʻakikī o ka heluhelu ʻana a i ʻole ka hana ʻana i nā hana kokoke.
Nā Lens Bifocal
Loaʻa i nā lens maka aniani Bifocal nā mana lens ʻelua e kōkua iā ʻoe e ʻike i nā mea ma nā mamao a pau ma hope o kou nalowale ʻana i ka hiki ke hoʻololi maoli i ka nānā ʻana o kou mau maka ma muli o ka makahiki, i kapa ʻia ʻo presbyopia. Ma muli o kēia hana kikoʻī, ʻōlelo pinepine ʻia nā lens bifocal i nā poʻe ma luna o 40 mau makahiki e kōkua i ka hoʻopaʻi ʻana i ka hōʻino kūlohelohe o ka ʻike ma muli o ke kaʻina hana ʻelemakule.
ʻEkolu Manaʻo o nā Lens Bifocal
ʻOiai ke kumu e pono ai ʻoe i kahi ʻōlelo kuhikuhi no ka hoʻoponopono ʻana i ka ʻike kokoke, hana like nā bifocals āpau. Aia ma kahi ʻāpana liʻiliʻi ma ka ʻaoʻao haʻahaʻa o ka lens ka mana e pono ai e hoʻoponopono i kāu ʻike kokoke. ʻO ke koena o ka lens no kāu ʻike mamao. ʻO ka māhele lens i hoʻolaʻa ʻia no ka hoʻoponopono ʻana i ka ʻike kokoke hiki ke ʻekolu ʻano:
ʻAno 1
Manaʻo ʻia ka Flat Top ʻo ia kekahi o nā lens multifocal maʻalahi loa e hoʻololi ai, no laila ʻo ia ka bifocal maʻamau i hoʻohana ʻia (FT 28mm i kapa ʻia ʻo ka nui maʻamau). ʻO kēia ʻano lens kekahi o nā mea maʻalahi loa i loaʻa i nā ʻano mea like ʻole a me nā lens hōʻoluʻolu. Hoʻohana ka Flat Top i ka laulā piha o ka māhele e hāʻawi ana i ka mea hoʻohana i kahi heluhelu a me ka hoʻololi mamao.
Kinohi 2
E like me ka inoa i hōʻike ʻia he poepoe ka bifocal poepoe ma kalalo. Ua hoʻolālā mua ʻia lākou e kōkua i ka poʻe ʻaʻahu e hele maʻalahi i ka wahi heluhelu. Eia naʻe, hoʻemi kēia i ka laulā o ka ʻike kokoke i loaʻa ma luna o ka māhele. Ma muli o kēia, ʻoi aku ka kaulana o nā bifocal poepoe ma mua o kapapa-luna bifocals. Loaʻa ka māhele heluhelu ma 28mm.
ʻAno 3: Hoʻohui ʻia
ʻO 28mm ka laulā o ka Blended bifocal. ʻO kēia hoʻolālā lenscʻO ka osmetically ka nānā maikaʻi loa o nā bifocal a pau, ʻaʻohe hōʻailona o kahi ʻāpana. Eia nō naʻe, aia kahi 1 a 2mm hui pū ʻana ma waena o ka mana māhele a me ka ʻōlelo kuhikuhi lens. He hiʻohiʻona kuhi kēia ʻano hui ʻana i hiki ke hōʻoia ʻaʻole hiki ke hoʻololi ʻia no kekahi mau maʻi. Eia nō naʻe, he lens hoʻi ia i hoʻohana ʻia me nā poʻe maʻi i kūpono ʻole i nā lens holomua.
