Kusankha magalasi olumikizana oyenera kumafuna kuyang'ana kwambiri mfundo zingapo zofunika. Kornea, gawo lakunja la diso, ndi lofewa komanso lotanuka. Ngakhale kuti ndi lochepa pafupifupi theka la milimita imodzi, kapangidwe kake ndi ntchito yake ndi zapamwamba kwambiri, zomwe zimapangitsa 74% ya mphamvu ya diso yowunikira. Popeza magalasi olumikizana amakhudza mwachindunji pamwamba pa cornea, kuvala magalasiwa kumalepheretsa mpweya wa cornea kufika pamlingo winawake. Chifukwa chake, kusankha magalasi sikuyenera kuonedwa mopepuka.

Pachifukwa ichi, madokotala amalimbikitsa kulabadira kwambiri zizindikiro zotsatirazi posankhamagalasi olumikizana:

Zipangizo:
Kuti mukhale omasuka, sankhani zinthu za hydrogel, zomwe zimayenera anthu ambiri ovala tsiku ndi tsiku, makamaka omwe amakonda kwambiri zinthu zomasuka. Kuti mukhale omasuka kwa nthawi yayitali, sankhani zinthu za silicone hydrogel, zomwe zimapereka mpweya wambiri wokwanira ndipo ndi zabwino kwa anthu omwe amakhala maola ambiri akuyang'ana makompyuta.

Mzere Wozungulira:
Ngati simunavalepo ma contact lens kale, mutha kupita ku chipatala cha maso kapena sitolo yogulitsira maso kuti mukayesedwe. Ma curve a ma lens ayenera kusankhidwa kutengera kutalika kwa curve ya kutsogolo kwa cornea. Nthawi zambiri, ma curve a maziko a 8.5mm mpaka 8.8mm amalimbikitsidwa. Ngati ma lens atsetsereka panthawi yogwiritsidwa ntchito, nthawi zambiri zimakhala chifukwa cha curve ya maziko yomwe ndi yayikulu kwambiri. Mosiyana ndi zimenezi, curve ya maziko yomwe ndi yaying'ono kwambiri ingayambitse kuyabwa kwa maso pakapita nthawi yayitali, kusokoneza kusinthana kwa misozi, ndikuyambitsa zizindikiro monga hypoxia.

Kutha kwa mpweya m'thupi:
Izi zikutanthauza mphamvu ya lenzi yolola mpweya kudutsa, yomwe nthawi zambiri imafotokozedwa ngati DK/t value. Malinga ndi International Association of Contact Lens Educators, magalasi ogwiritsidwa ntchito tsiku lililonse ayenera kukhala ndi mpweya wopitirira 24 DK/t, pomwe magalasi ogwiritsidwa ntchito nthawi yayitali ayenera kupitirira 87 DK/t. Posankha magalasi, sankhani omwe ali ndi mpweya wochulukirapo. Komabe, ndikofunikira kusiyanitsa pakati pa mpweya wopitirira ndi mpweya wopitirira:Kutumiza kwa Oxygen = Kulowa kwa Oxygen / Kukhuthala kwa PakatiPewani kusokeretsedwa ndi kuchuluka kwa mpweya wolowa m'thupi komwe kwalembedwa pa phukusi.

Kuchuluka kwa Madzi:
Kawirikawiri, madzi okwanira pakati pa 40% ndi 60% amaonedwa kuti ndi oyenera. Kuphatikiza apo, ukadaulo wabwino wosunga chinyezi cha lenzi ungathandize kuti mandala azikhala omasuka akamavala. Komabe, dziwani kuti madzi ambiri nthawi zina samakhala abwino. Ngakhale kuti madzi ambiri amapangitsa kuti magalasi akhale ofewa, amatha kupangitsa maso kukhala ouma akamavala kwa nthawi yayitali.

Mwachidule, kusankha magalasi olumikizirana maso kumafuna kuganizira mozama za momwe maso anu alili, momwe mumavalira, komanso zosowa zanu. Musanavale, pitani kukayezetsa maso ndikutsatira malangizo a dokotala wanu kuti muwonetsetse kuti maso anu ali ndi thanzi labwino.