The tear film is a thin layer of liquid that covers the surface of the eye, providing moisture and protection. It consists of three main components: an outer lipid layer, a middle aqueous layer, and an inner mucin layer. This film helps to keep the eyes lubricated, reduces friction during blinking, and washes away debris and irritants. Maintaining a healthy tear film is essential for clear vision and overall eye health. Factors like dry eye syndrome, environmental conditions, and prolonged screen time can disrupt the tear film, leading to discomfort and potential vision problems. Regular eye care can help manage these issues.