沙眼是由沙眼衣原体引起的,该病与居住拥挤、个人卫生不良以及不洁用水和卫生设施差有密切关系。沙眼可通过接触者患的眼分泌物(如毛巾、手帕和手指)以及通过袭扰眼睛的苍蝇而引起传播。感染后引起眼睛的炎症反应,在结膜上形成滤泡。经反复感染几年后,眼睑内可能出现疤痕,以致眼睑内翻,睫毛磨擦眼球,如果不经治疗即可导致眼盲。眼盲病因中由沙眼引起的约占15%。据有关资料表明,目前,全球已有约600万人因沙眼导致不可复明的眼盲,同时约有1.46亿例活动性沙眼需加以治疗。为此,世界卫生组织 WHO提出了消灭沙眼的四项对策,即倒睫手术、抗生素治疗、面部清洁和环境改善。眼科专家们赞成 WHO所提的这些对策,但强调为了消灭沙眼,还需采取积极的防治措施,否则将会有更多的人因沙眼而致 Chlamydia trachomatis is caused by Chlamydia trachomatis, the disease and overcrowding, poor personal hygiene and poor water and sanitation are closely related. Trachoma can be caused by contact with eye secretions (such as towels, handkerchiefs and fingers) and by eye-catching flies caused by transmission. Inflammation caused by inflammation of the eye, the formation of follicles in the conjunctiva. After repeated infections for several years, the scars may appear in the eyelids, causing the eyelids to turn over and the eyelashes to rub the eyeballs, leading to blindness without treatment. Eye causes of trachoma caused by about 15%. According to relevant information, at present, about 6 million people worldwide have an irreversible blindness due to trachoma, and about 146 million cases of active trachoma need to be treated. To this end, the WHO proposed four measures to eliminate trachoma, trichiasis surgery, antibiotic treatment, facial cleansing and environmental improvement. Ophthalmologists are in favor of these measures proposed by the WHO, but stressed that in order to eliminate trachoma, active prevention and control measures still need to be taken, otherwise, more people will be trachoma