Nūhou - Nā leka no nā poʻe waena a me nā ʻelemakule

He aha ka presbyopia?

ʻO "Presbyopia" kahi hanana physiological maʻamau a pili i ka lens.He elastic ka lens crystalline.He elasticity maikaʻi kona i kona wā ʻōpiopio.Hiki i ka maka kanaka ke ʻike kokoke a mamao ma o ka hoʻololi ʻana o ka lens crystalline.Eia naʻe, i ka piʻi ʻana o ka makahiki, paʻakikī a mānoanoa ka lens crystalline, a laila nāwaliwali ka elasticity.I ka manawa like, e emi ana ka hiki o ka contraction o ka ʻiʻo ciliary.E emi iho ana ka ikehu o ka maka, a e emi ana ka noho ana, a hiki mai ka presbyopia i keia manawa.

He aha nā lens holomua holomua?

ʻO nā lens a mākou e ʻaʻahu ai he mau lens monofocal maʻamau, hiki ke ʻike i kahi mamao a kokoke paha.Ma ka ʻaoʻao ʻē aʻe, ʻo nā lens holomua holomua he nui nā kiko kikoʻī, me ka ʻaoʻao o luna o ka lens i hoʻohana ʻia no ka ʻike mamao a ʻo ka ʻaoʻao lalo no ka ʻike kokoke.Aia kahi hoʻololi mālie mai ka mana mamao ma luna o ka lens a hiki i ka mana kokoke ma lalo o ka lens ma o ka hoʻololi mālie i ka mana refractive.

Kapa ʻia nā lens holomua i kekahi manawa "no-line bifocals" no ka mea ʻaʻohe o lākou laina bifocal ʻike ʻia.Akā ʻoi aku ka maikaʻi o ka hoʻolālā multifocal holomua ma mua o nā bifocals a i ʻole trifocals.
Hāʻawi maʻamau nā lens holomua holomua (e like me nā lens Varilux) i ka hōʻoluʻolu maikaʻi loa a me ka hana, akā he nui nā hōʻailona ʻē aʻe.Hiki i kāu ʻoihana mālama maka ke kūkākūkā me ʻoe i nā hiʻohiʻona a me nā pōmaikaʻi o nā lens holomua hou loa a kōkua iā ʻoe e ʻimi i nā lens maikaʻi loa no kāu mau pono kikoʻī.

Hoʻololi mālie ka mana o nā lens holomua mai kahi a kahi kiko ma ka ʻili o ka lens, e hāʻawi ana i ka mana lens kūpono no
ʻike maopopo i nā mea ma kahi mamao.
ʻO nā Bifocals, ma ka ʻaoʻao ʻē aʻe, ʻelua wale nō mana lens - hoʻokahi no ka ʻike pono ʻana i nā mea mamao a me ka lua o ka mana ma lalo.
ka hapalua o ka lens no ka ike maopopo ana ma kahi mamao heluhelu.ʻO ka hui ma waena o kēia mau ʻāpana mana ʻokoʻa
ua wehewehe ʻia e kahi "laina bifocal" ʻike ʻia e ʻoki ana i ke kikowaena o ka lens.

Nā Pōmaikaʻi Lens Progressive

ʻO nā lens holomua, ma ka ʻaoʻao ʻē aʻe, ʻoi aku ka nui o nā mana lens ma mua o nā bifocals a i ʻole trifocals, a aia kahi hoʻololi mālie o ka mana mai kahi a kahi kiko ma ka ʻili o ka lens.

Hāʻawi ka hoʻolālā multifocal o nā lens holomua i kēia mau pono nui:

* Hāʻawi ia i ka ʻike akaka ma nā mamao āpau (ma mua o ʻelua a ʻekolu paha mau mamao nānā ʻokoʻa).

* Hoʻopau ia i ka "lele kiʻi" pilikia i hana ʻia e nā bifocals a me nā trifocals.ʻO kēia kahi e hoʻololi koke ai nā mea i ka mālamalama a me ke kūlana i ka wā e neʻe ai kou mau maka i nā laina ʻike ʻia i kēia mau lens.

* No ka mea, ʻaʻohe "laina bifocal" ʻike ʻia i nā lens holomua, hāʻawi lākou iā ʻoe i kahi hiʻohiʻona ʻōpio ma mua o nā bifocals a i ʻole trifocals.(ʻO kēia kumu wale nō paha ke kumu e hoʻohana ai ka poʻe i kēia lā i nā lens holomua ma mua o ka helu i hui pū ʻia i ka bifocal a me nā trifocals.)

Ka manawa hoʻouna: Oct-14-2022