干眼症,又称角结膜干燥症,是指由于泪液质和量或动力学的异常引起的泪膜不稳定和眼表损害,从而导致眼部不适症状为特征的一类疾病。患者常感觉眼部干涩、异物感、烧灼感及眼疲劳等,Sch irm er试验、BUT试验检查异常。近年来,准分子激光屈光性角膜手术得到了大量地开展,在手术方 Dry eye syndrome, also known as keratoconjunctival xerophthalmia, refers to a group of diseases characterized by ocular discomfort caused by instability of the tear film and ocular surface damage caused by abnormalities in tear fluid mass and kinetics. Patients often feel dry eyes, foreign body sensation, burning and eye fatigue, Schirm er test, BUT test abnormalities. In recent years, excimer laser refractive corneal surgery has been carried out in large quantities in the surgical side