waa maxay indho?
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Ishu waa xubin dareen ah oo u oggolaanaysa noolaha inay ogaadaan iftiinka oo ay ogaadaan macluumaadka muuqaalka ah ee ku saabsan adduunka ku hareeraysan. Dadka iyo xayawaano kale oo badan, indhuhu waxay ku yaalaan wejiga waxayna ka kooban yihiin dhowr qaybood oo gaar ah oo ka shaqeeya sameynta sawirka deegaanka ku xeeran. Qaybahaas waxaa ka mid ah cornea, iris, lens, retina, iyo neerfaha indhaha.
Cornea waa lakabka difaaca oo cad, oo daboola dhinaca hore ee isha oo caawiya inay diirada saaraan iftiinka soo socda. Irisku waa isha qaybteeda midabka leh ee koontaroolaysa cadadka ilayska ee soo galaya isha iyadoo hagaajinaysa cabbirka. Lens-ku waa qaab-dhismeed hufan oo diiradda saaraya iftiinka duleelka retina, kaas oo ah lakab unug iftiin-xasaasi ah oo ku yaal dhabarka isha oo ay ku jiraan unugyo sawir-qaade ah oo loo yaqaan ul iyo koon. Ulaha iyo kooyadu waxay u beddelaan iftiinka calaamadaha korantada ee maskaxda loogu diro iyada oo loo marayo neerfaha indhaha, taas oo u suurtagelisa maskaxdu inay sameyso aragti muuqaal ah oo adduunka ah.
Indhuhu waxay lagama maarmaan u yihiin hawlo badan oo maalinle ah, sida akhriska, wadista, iyo aqoonsiga wejiyada. Waxay sidoo kale muhiim u yihiin badbaadada xayawaanno badan, maadaama ay u oggolaadaan noolaha inay ogaadaan khataraha iyo ugaarsiga iman kara