Wachikuda mandala: Mbiri ya kuyambitsa mwaluso

Mwina ambiri kudabwa kumva kuti kukhudzana magalasi anausankha wina kuposa Leonardo da Vinci, ngakhale mu 1508 kufotokoza mandala imene wokwera pa diso munthu kudzudzulidwa masomphenya ndi kusintha katundu kuwala kwa diso.

Mpaka 40s Mu zaka zapitazo pafupifupi magalasi zonse za galasi mwachilungamo wandiweyani, ndi m'mimba mwake awo ndi 20-30 mm (iwo kuphimba nkhope ya mwana wa m'diso la). magalasi kungatenge kufooka maola ochepa, chifukwa izo zimayambitsa corneal kutupa ndi kusawona bwino, ndipo pambuyo mandala atachotsedwa diso, ankafunika tsiku kuposa wina kubwezeretsa diso. Kumene, kuti chinthu ngati mandala wachikuda, kudakali sakudziwika kwa aliyense.

Mu 1947 panali woyamba kukhudzana mandala ano mtundu, unapangidwa pulasitiki wapadera, chilengedwe chimene chaka kuposa wina, asayansi ntchito.

Ndipo okha cha m'ma XX izo udaikidwa ndi polima hydrogel, ndi lero, ndi maziko a zipangizo zambiri zamakono za zomangamanga kwa chimaonekera ndipo mitundu yonse ya akuda magalasi kukhudzana. Izi kugawa zofewa chuma ali wapadera katundu: transmits mpweya ndi zimatenga madzi.

Panopa kuli Mboni zoposa 150 mitundu yosiyanasiyana ya zipangizo anafuna kupanga zosiyanasiyana magalasi kukhudzana, khalidwe lawo zilibwino tsiku ndi tsiku.

Kupanga zomangira imatengedwa mphamvu zawo, kuchuluka kwa okhutira madzi, permeability mpweya, biocompatibility, refractive index ndi magawo ena.

Lero, mothandizidwa ndi mitundu yosiyanasiyana ya magalasi kukhudzana silingakhoze kokha zolondola masomphenya opanda magalasi, ndipo ngakhale kusintha mtundu wa maso, ndipo mukhoza imodzi kuchita onse.

Kodi kusankha disolo bwino popanda kuphwanya thanzi la diso?

Akuda magalasi ndi diopters, pali kale zaka zoposa 30. Si wokongola kokha, komanso yabwino kwambiri. Ngati poyamba anali yekhayo amene mafilimu, tsopano aliyense mosavuta kusintha mtundu chilengedwe cha maso pamene akufunira. Aliyense mandala lili ndi mtundu toning chitsanzo kapena mtundu, wokhoza kumapangitsanso mtundu chilengedwe cha diso munthu anthu.

Komabe, musanasankhe zochita kukagula magalasi wachikuda, ayenera kukhala bwino ndi malamulo wowasamalira. Aliyense mandala mtundu Pamafunika lomweli kusamala ndi kusamalitsa pamene ntchito ngati magalasi yosavuta asinthe.

Kuti akongoletse mandala sayambitsa kusapeza diso, muyenera mosamala kufikako kusankha mankhwala ndi mankhwala mosamala.

Aliyense mandala akuda ayenera mosamala kwambiri kuchapa ndi kuyeretsa. Koma musaiwale kuti kusamalira magalasi akuda amafuna njira yapadera imene musati zikande ndipo alibe kuwononga utoto. Kuti mudziwe mmene kusamalira magalasi a mtundu makamaka, inu nthawi zonse mu okonzera wa Optics, kumene mukufuna kugula magalasi. Konse woyera wachikuda magalasi ndi njira munali hydrogen peroxide - pamenepa iwo Akhristuwo.

Chofunika kwambiri, musanayambe kugula magalasi wachikuda, onetsetsani kuti ndiweruzidwe ndi maso ndi. Kafukufuku wasonyeza kuti kawirikawiri kuvala magalasi akuda mwina ndichepe acuity zithunzi ndi kusiyana tilinazo diso.