Methods 50 patients with LTD, 50 patients with ATD, and 50 normal control subjects participated in this study.

• 方法本组研究对象为50例脂质性泪液不足干眼症患者(lipid tear deficiency,LTD),50例水液性泪液不足干眼症患者(aqueous tear deficiency,ATD),50例正常控制组人群。