Kuwerenga magalasi

Ndili ndi zaka, kuthekera kwa kuwona kumaonongeka ngakhale mwa anthu omwe m'moyo wonse akhala ndi masomphenya abwino. Monga lamulo, mwa amayi ndi abambo ali ndi zaka 40, presbyopia ikukula, kapena kutalika kwa nthawi yaitali. Mwachidziwikire, vuto ili silikuipitsa nthawi zonse umoyo wa moyo, komabe, zimaonekera poyesera kuwerenga buku kapena nyuzipepala.

Zikatero, madokotala amalimbikitsa kugula magalasi apadera powerenga. Masiku ano mu saloni iliyonse ya optics pali zipangizo zosiyanasiyana zofanana, zomwe zimakhala zovuta kupeza chitsanzo chabwino.

Mtundu wa magalasi owerengera

Pakati pa lonse assortment of ofanana Chalk kusiyanitsa zotsatirazi mitundu:

• magalasi okhala ndi malingaliro amodzi okha . Amapereka maonekedwe abwino kwambiri pamtunda wa masentimita 30 mpaka 40 kuchokera m'maso ndipo amayenera kuwerenga. Ngati kale mudali kuvala magalasi kapena malingaliro okonza mavuto ophwima, izi ziyenera kukhala kwa inu kachiwiri, kuchita ntchito yake yomweyo. Zikakhala choncho, nthawi zambiri amatha kugula magalasi amodzi kuti awerenge panjira kuti awatulutse kwa nthawi inayake ndipo nthawi yomweyo achotseni mutatha kuwerenga mabuku ofunikira;
• magalasi ochepa omwe amagwiritsidwa ntchito powerenga amawongolera magalasi, amagawidwa m'zigawo ziwiri zozungulira. Mbali yam'mwamba ya magalasi amenewa yapangidwa kuti aphunzire mwatsatanetsatane za zinthu zomwe zili patali kwambiri, ndipo m'munsi kuti muthe kuyang'ana bwino pafupi, pamene chitsogozo cha maso chimathamangira pansi. Makamaka, izi ndizo zomwe zimachitika powerenga buku kapena nyuzipepala. Chifukwa cha mawonekedwe ochepa kwambiri ndi lens, amagawidwa m'zigawo ndi mbali yapadera, magalasi oterowo angagwiritsidwe ntchito mmaganizo osiyanasiyana, kotero amatha kuwongolera mawiri angapo pamodzi;
• magalasi abwino kwambiri owerengera mpaka pano ndi zinthu zopangira mapulogalamu apamwamba , mphamvu zamagetsi zomwe zimapitiriza kapena zimachepa malinga ndi kutalika kwa maso chinthu chomwe mukuchiganizira. Magalasi awa amapangidwa payekha kwa munthu aliyense ndipo ndi okwera mtengo, kotero siyense amene angathe kugula chipangizo ichi.

Mosiyana ndizofunika kuziwona magalasi kuti aziwerenga mobanda . Ngakhale madokotala samalimbikitsa kuti aziwerenga mobwerezabwereza, anthu ambiri sangathe kusiya chizoloŵezi chimenechi. Momwemonso, mungagwiritse ntchito magalasi apadera omwe amachotsa mavuto ambiri m'maso ndi m'kamwa. Pa nthawi yomweyo, anthu onse angagwiritse ntchito zowonjezera, mosasamala za msinkhu komanso kukhalapo kwa mavuto ophthalmologic.

Monga mukuonera, posankha magalasi owerengera, ndikofunika kulingalira mosiyana kwambiri ndi maonekedwe, monga momwe zimagwirira ntchito. Ngakhale, ndithudi, ndi mapangidwe sayenera kuiwalika.