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泪膜包括脂质层和由水及黏蛋白构成的凝胶层,其中脂质层又分为极性和非极性两层。非极性脂质的成分为蜡酯、固醇酯、甘油三酯等,而极性脂质层主要是磷脂类。蒸发过强型干眼患者的泪膜脂质层成分不同于正常者,而泪液脂质层对于稳定泪膜、减少蒸发具有重要意义,因此蒸发过强型干眼治疗的关键在于补充和稳定泪膜脂质,既可以作为单一疗法也可以联合补充泪液的治疗。
The tear film includes a lipid layer and a gel layer composed of water and mucin, wherein the lipid layer is further divided into two layers, polar and non-polar. The components of non-polar lipids are wax esters, sterol esters, triglycerides and the like, whereas polar lipid layers are predominantly phospholipids. Evaporic dry eye patients with tear film lipid layer composition is different from normal, and tear lipid layer for the stability of the tear film, reducing evaporation is important, so evaporative dry eye treatment is the key to supplement and stabilize the tears Membrane lipids, both as a monotherapy can also be combined to supplement the treatment of tears.