前列腺素(prostaglandin,简称PG)存在于眼组织中,它被认为是炎症的介体。外源性PG眼内注射,可以引起眼部的炎性改变。作者对22例病人进行了这种研究,其中7例屈光不正及临床检查结膜正常;8例有春季结膜炎的急性症状,未进行任何药物疗法;其余为慢性沙眼。收集泪液的方法是把Schirmer滤纸条轻柔地放到双眼下结膜囊内,滤纸浸透后,用0.4ml Prostaglandin (PG) is present in ocular tissues and is considered as a mediator of inflammation. Exogenous PG intraocular injection, can cause inflammatory changes in the eye. The authors conducted this study in 22 patients, of whom 7 were ametropic and had normal conjunctival examination; 8 had acute symptoms of spring conjunctivitis without any drug therapy; and the rest were chronic trachoma. The method of collecting tears is to Schirmer filter paper gently under the eyes conjunctival sac, filter paper soaked, with 0.4ml