 Ahavuye isanamu, Getty Images Insiguro yisanamu, Ibimini bitanga intungamubiri Indwara yo kugenda unanirwa kubona uko igihe kigenda gishira - izwi ku izina rya nutritional optic neuropathy - ari yo uyu muhungu arwaye, ni indwara iba ishobora kuvurwa igakira iyo igaragaye hakiri kare. 