干眼病的病因尚不清楚。但均依限结膜干燥、充血、疼痛、角膜上皮糜烂、视力降低为常见；症状顽固，治疗困难。目前临床上多用中草药煎服，庆大霉素点眼局部抗菌；还有用硫酸软骨素点眼改善角膜代谢及促进上皮病变的修复；同时还加服维生素作辅助治疗；其疗程长，疗效差，患者 The cause of dry eye is not clear. However, according to the limited drying of the conjunctiva, congestion, pain, corneal epithelial erosion, visual acuity is common; stubborn symptoms, treatment difficulties. At present, the clinical use of Chinese herbal medicine decoction, gentamicin point of the eye of local antibacterial; there is the use of chondroitin sulfate eye to improve corneal metabolism and promote the repair of epithelial lesions; also added vitamins for adjuvant therapy; its long course, poor efficacy, patients