Weligaa ma yaabin sida dadku u arkaan dunida, si fiican, tusaale ahaan, midab-indho la'aan?
Ama laga yaabee inaad maqashay dadka "indho casaan"? Maya?
Ka dibna u diyaari, sababtoo ah hadda waxaad arki doontaa sawirro ka dib oo aanad waligaa fiirin doonin wax kasta oo ku hareereysan, sidii hore ...
Keliya ha ka baqin, erayada "indho casil" ama "la'aanta midabka midabka" macnaheedu maahan in dadka qaba dhibaatadan, sababtoo ah middani ma calaamadeyn midabada ama wax kasta ayaa loo qeybiyaa madow iyo caddaan. Iyo xitaa in ka badan, waxay soo baxdaa, 99% dadka indho beelka ahi waxay arkeen wax kasta oo midab leh! Laakiin weli ... 1 ka mid ah 12 rag (8%) iyo 1 200 oo haween ah (0.5%) ayaa leh yaraansho midab leh, taas oo macnaheedu yahay in xitaa waddadaada ay jiraan dad badan oo qaba dhibaatooyinka indho-furista.
Laakiin hadda wax badan ayaan idinku dhajin doonaa! Yaraanta aragtida midabka waxaa laga helaa noocyo kala duwan:
- Deuteranomalia, oo lagu tilmaamayo daciifnimo xagga garashada midabka cagaaran;
- Protanopia, marka qofku aanu kala saarin ama daciifin midabka cas;
- Tritanopia - ku xadgudubka dareenka midabada ee buluugga-buluugga ah;
- Monochromasia waa indho laawe dhamaystiran, marka qofku garo midabbada kaliya marka la eego iftiinka.
Waa hagaag, bal aynu aragno sida ay u egyihiin indhahooga gaarka ah, ama halkii, sidee bay dadku u arki karaan aduunka "indho casaan"?