Gilashin karatu wani nau'in tabarau ne na gani, wanda ke ba da gilashin myopia wanda mutane da presbyopia ke amfani da su, wanda ke cikin lens mai ɗaukar hoto.Ana amfani da gilashin karatu don cika idanun masu matsakaici da tsofaffi.Kamar gilashin myopia, suna da ƙima mai ƙima na lantarki da yawa waɗanda ake buƙata ta ma'aunin masana'antu na ƙasa, kuma suna da wasu ƙa'idodi na musamman na aikace-aikacen.Don haka, gilashin karatu dole ne a sanye da tabarau.
Na farko, ainihin rarraba gilashin karatu
A halin yanzu, akwai manyan nau'ikan gilashin karatu guda uku a kasuwa, wato ruwan tabarau guda ɗaya, ruwan tabarau na bifocal da ruwan tabarau na asymptotic multifocal.
Ana iya amfani da ruwan tabarau guda ɗaya don gani kusa, kuma dole ne a dawo da hangen nesa yayin kallon nesa.Ya dace kawai ga mutanen da ke da sauƙin presbyopia da ƙananan mita na yin amfani da gilashin karatu;
Bifocals na nufin gilashin karatu tare da ruwan tabarau na sama wanda aka yi amfani da su don gani mai nisa, da ƙananan ruwan tabarau na rabin abin da ake gani a kusa, amma irin wannan gilashin karatun za su yi duhu da hangen nesa, kuma sanya dogon lokaci yana da wuyar samun ciwon ido, tashin hankali. , da sauransu, ƙirar gida ba ta da kyau, kuma ba a saba gani ba a yanzu;ruwan tabarau na asymptotic multifocal na iya saduwa da buƙatun hangen nesa a nesa daban-daban a nesa, tsakiya da kusa.A bayyanar ne high-tech da kuma gaye, kuma shi ne mafi dace da zamani myopia a kan shekaru 40. Eye plus presbyopia, astigmatism kungiyar sa.
Na biyu, yanayin aikace-aikacen gilashin karatu
Presbyopia al'ada ce ta al'ada ta jiki, ba cutar ido ba, kuma ba kawai tsoho ba.Bayan shekaru 40, tare da taurarewar sinadarai na ruwan tabarau na ido a hankali da kuma raguwa a hankali na jikin ciliary, idon ɗan adam ba zai iya daidaita kamannin kallon da kyau ba (radial transformation).Ya danganta da nisa tsakanin abubuwa, dole ne ku yi nisa lokacin kallon abubuwan kusa kafin ku iya gani sosai.Yanayin idanu biyu a wannan lokaci ana kiransa presbyopia.
Idan presbyopia yana so ya yi amfani da hangen nesa na ido akan nisa na asali na al'ada, ya zama dole a sanya gilashin karatu don cika hangen nesa, ta yadda za a iya sake ganin hangen nesa kusa.Ido biyu.Matsayin myopia a cikin presbyopia yana da alaƙa da shekaru.Tare da karuwar shekaru, lalacewar ruwan tabarau na ido zai karu, kuma matakin myopia zai karu a hankali.
Presbyopia ya riga ya faru, kuma idan har ka dage ba a saka gilashin karatu ba, jikin ciliary zai gaji kuma ya kasa daidaitawa, wanda tabbas zai kara wahalar karatu, yana haifar da dizziness, dizziness da sauran cututtuka masu yawa, wanda zai haifar da haɗari ga rayuwar yau da kullum da kuma hadarin gaske. aiki.Babban girman kai.Saboda haka, gilashin presbyopia ya kamata a daidaita su nan da nan ba tare da bata lokaci ba (Mutanen Sinawa suna da ra'ayi mara kyau: suna tunanin cewa saka gilashin karatu shine "cuta" mai tsanani, kuma ba su gane wanzuwar gilashin karatun ba. Wannan ra'ayi ne mara kyau) .
Bayan tsufa, gilashin karatu na asali sanye take da ƙarancin myopia dole ne a maye gurbinsu nan da nan.Don haka, bai kamata a sa gilashin karatu koyaushe ba.Dogon sanye da tabarau na karatu tare da digiri mara dacewa na myopia ba kawai zai haifar da matsala mai yawa ga rayuwar yau da kullun ba, har ma yana ci gaba da hanzarta aiwatar da binocular presbyopia.
A karkashin yanayi na al'ada, akwai manyan bayyanar cututtuka guda biyu na presbyopia a farkon mataki:
Na farko shine aiki kusa ko karatu mai wahala.Misali, lokacin karantawa, dole ne ku riƙe littafin nesa, ko kuma ku karanta a wani yanki mai ƙarfi mai ƙarfi don gane shi.
Na biyu gajiyar ido.Tare da raguwar ikon masauki, buƙatun karatu sannu a hankali suna kusantar iyakar ikon masauki, wato, lokacin karatun, ainihin dole ne a yi amfani da duk ikon masaukin idanu biyu, ta yadda ba zai yiwu a yi amfani da idanu na dogon lokaci ba, kuma yana da sauqi don haifar da kumburin ido saboda yawan daidaitawa., ciwon kai da sauran alamun gajiyawar gani.
Faruwar sharuɗɗan biyun da ke sama na nuni da cewa idanuwa za su iya tsufa a hankali.Ga ƙungiyoyin myopic, ya zama dole a cire gilashin myopic ko daidaita littafin karatun nesa lokacin karantawa a kusa, wanda kuma shine babban bayyanar presbyopia.Bayan idanu biyu suna presbyopic, hanya mafi aminci ita ce sanya gilashin karatu masu dacewa don daidaitawa.
Lokacin aikawa: Agusta-09-2022