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作者于1990年3月20日至4月10日选当地蒙文实验小学在巴镇地区居住三年以上的全体189名蒙古族学生,年龄为8～12岁,进行了沙眼调查与治疗。在自然光下采用中华医学会第二届全国眼科学术会议制定的沙眼诊断标准,由经过沙眼
The author selected all Mongolian Mongolian students aged 8 to 12 who lived in Ba Town for more than three years from March 20 to April 10, 1990, and conducted trachoma investigation and treatment. In natural light using the second session of the Chinese Medical Association ophthalmic conference to develop diagnostic criteria for trachoma, trachoma