沙眼是一种慢性局限性疾患,有滤泡形成和结膜下淋巴细胞、浆细胞以及巨噬细胞浸润,说明其发病机理可能与免疫反应有关。作者等用免疫扩散方法,测定并比较正常人与沙眼患者泪液内的免疫球蛋白的含量。在100例正常人泪液中测定结果:IgA平均含量为27.8mg±15.3mg%.性别与年令均无何差别,于92例中可测出IgG,其含量均少于1mg％; Trachoma is a chronic, localized disorder with follicular formation and subconjunctival lymphocytes, plasma cells and macrophage infiltration, indicating that the pathogenesis may be related to the immune response. The authors used immunodiffusion to determine and compare immunoglobulin levels in tear fluid in normal subjects and trachoma patients. In 100 cases of normal tear fluid test results: the average IgA content of 27.8mg ± 15.3mg%. Gender and year were no difference between the 92 cases can be measured IgG, the content of less than 1mg%;