Makantar launi

Rashin makantar launi shine rashin iya ganin wasu launuka ta yadda aka saba.

Rashin makantar launi na faruwa ne yayin da ake samun matsala game da launukan da ke wasu kwayoyin jijiyoyin ido wadanda suke fahimtar launi. Wadannan kwayoyin ana kiran su cones. Ana same su a cikin fata mai laushi a bayan ido, ana kiran su kwayar ido.

Idan launin launi daya ya ɓace, ƙila ka sami matsala faɗin bambanci tsakanin ja da kore. Wannan shine mafi yawan nau'in makantar launi. Idan launin launi daban ya ɓace, ƙila ku sami matsala ganin launuka masu launin shuɗi-shuɗi. Mutanen da ke da makantar launin shuɗi-shuɗi galibi suna da matsalolin ganin jan launi da ganye, suma.

Mafi tsananin nau'in makantar launi shine achromatopsia. Wannan yanayi ne wanda ba safai ake samun mutum ba wanda ba zai iya ganin kowane launi ba, sai kawai launin toka-toka.

Yawancin makantar launi saboda matsalar kwayar halitta ce. Kusan 1 cikin maza 10 suna da wani nau'i na makantar launi. Mata kalilan ne makafin launi.

Maganin hydroxychloroquine (Plaquenil) na iya haifar da makantar launi. Ana amfani dashi don magance cututtukan cututtukan zuciya da sauran yanayi.

Kwayar cutar ta bambanta daga mutum zuwa mutum, amma na iya haɗawa da:

• Matsalar ganin launuka da hasken launuka a hanyar da aka saba
• Rashin iya faɗi bambanci tsakanin tabarau iri ɗaya ko makamancin haka

Sau da yawa, bayyanar cututtuka suna da sauƙi sosai cewa mutane ba za su san cewa makauniyar launi ba ce. Iyaye na iya lura da alamun makantar launi lokacin da ƙaramin yaro ya fara koyon launuka.

Hanyoyin hanzari, gefen ido zuwa gefe (nystagmus) da sauran alamu na iya faruwa a cikin mawuyacin hali.

Mai ba da sabis na kiwon lafiya ko ƙwararren ido na iya bincika hangen nesa launi ta hanyoyi da yawa. Gwaji don makantar launi wani yanki ne na gwajin ido.

Babu wani sanannen magani. Gilashin tabarau na musamman da tabarau na iya taimaka wa mutane da makantar launi su faɗi bambanci tsakanin launuka iri ɗaya.

Makantar launi shine yanayin rayuwa. Yawancin mutane suna iya daidaitawa da shi.

Mutanen da suke fatar launi ba za su iya samun aikin da ke buƙatar ikon ganin launuka daidai ba. Misali, masu sana'ar lantarki, masu zane, da masu zane-zane suna bukatar iya ganin launuka daidai.

Kira mai ba ku sabis ko ƙwararren ido idan kuna tsammanin ku (ko ɗanku) na iya samun makantar launi.

Rashin launi; Makaho - launi

Baldwin AN, Robson AG, Moore AT, Duncan JL.Abubuwa marasa kyau na sanda da mazugi. A cikin: Schachat AP, Sadda SVR, Hinton DR, Wilkinson CP, Wiedemann P, eds. Ryan's Retina. Na 6 ed. Philadelphia, PA: Elsevier; 2018: babi na 46.

Crouch ER, Crouch ER, Grant TR. Ilimin lafiyar ido. A cikin: Rakel RE, Rakel DP, eds. Littafin karatun Magungunan Iyali. 9th ed. Philadelphia, PA: Elsevier Saunders; 2016: babi na 17.

Wiggs JL. Kwayoyin halittar kwayoyin halitta na zafin cuta na ido. A cikin: Yanoff M, Duker JS, eds. Ilimin lafiyar ido. 5th ed. Philadelphia, PA: Elsevier; 2019: babi na 1.2.