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一、简要的生理概述泪液产生于泪腺及付泪腺,加之蔡氏腺和睑板腺分泌出来的油脂性分泌物。以及杯状细胞产生的粘液。在眼球表面,形成一种混合液体的液膜。也称泪液膜。在角膜表面,以油脂层、泪液层和粘液层,互相依附而又层次分明的形成角膜前膜,这是由其自身的理化性质构成的生理保护形态。以达到润滑眼球,提高角膜的光学性能和对微细异物的排出、某些细菌的杀灭。此膜受到泪腺的不断产生、泪道的不断排泄、外眼的不断蒸发而不断更新。泪
First, a brief physiological overview Tears produced in the lacrimal gland and pay lacrimal gland, combined with Cai sebaceous glands and meibomian glands secrete grease secretions. As well as mucus produced by goblet cells. On the surface of the eyeball, a liquid film of liquid is formed. Also known as tear film. On the corneal surface, with the oil layer, tear layer and mucus layer, attached to each other and the formation of a clear layer of the pre-keratoplastic membrane, which is composed of its own physical and chemical properties of physiological protection form. To achieve lubrication of the eye, improve the optical properties of the cornea and the discharge of fine foreign objects, the killing of certain bacteria. This film by the continuous production of lacrimal glands, lacrimal continuous discharge, the outer eyes continue to evaporate and constantly updated. tears