Carboxymethylcellulose (0.5% w/v) is an ophthalmic solution classified as a lubricating agent, widely recognized for its role in alleviating dryness and discomfort in the eyes. As a cellulose derivative, it possesses excellent water‑retention properties, allowing it to mimic the natural tear film and provide soothing moisture to the ocular surface. This makes it particularly beneficial for individuals experiencing symptoms of dry eye syndrome, environmental irritation, or ocular fatigue caused by prolonged screen use. By forming a protective layer over the cornea, carboxymethylcellulose helps reduce friction during blinking, enhances tear stability, and supports overall ocular comfort. Its formulation is designed for topical application, ensuring direct hydration where it is most needed, while being gentle and well‑tolerated. Clinically, it is often recommended as a supportive therapy in managing dry eye conditions, post‑surgical recovery, or situations where tear production is insufficient. The convenience of use and rapid soothing effect make it a preferred choice for both patients and practitioners. Overall, carboxymethylcellulose 0.5% w/v serves as a reliable and effective ophthalmic preparation, promoting eye health, reducing irritation, and enhancing visual clarity by maintaining a stable and comfortable ocular environment.