With the popularity of computers, people are spending more and more time using computers, and more and more people are suffering from dry eyes! Excessive use of the computer, excessive use of the eyes such as watching TV, often leads to dry eyes, easy fatigue, want to sleep, itchy, foreign body sensation, painful burning sensation, tight and heavy eyelids, thick secretions, fear of wind, photophobia, very sensitive to external stimuli, temporary blurred vision. Sometimes the eyes are so dry that the basic tear deficiency stimulates reflex tear secretion and causes the symptom of frequent tearing; in more serious cases, the eyes will be red, swollen, congested, keratinized, and the corneal epithelium will break the skin and have filaments adhering to it. These are the signs of dry eye. Dry eye is a general term for a variety of diseases characterized by abnormal tear quality or quantity or kinetics from any cause, resulting in decreased tear film stability with ocular discomfort and/or ocular surface tissue lesions.