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有资料显示,在我国老年人口中,听力疾病和视力疾病的发病率均为30%～60%。人到老年,如何保持耳聪目明,这是许多老年人所关心的问题。
Data show that in our country’s elderly population, the incidence of hearing and vision diseases are 30% to 60%. It is a matter of concern to many elderly people how to keep their eyes open when they reach the elderly.