Lubistar-CMC Eye Drop contains Carboxymethylcellulose 0.5% w/v, a hydrophilic polymer used as a lubricant and artificial tear agent to relieve dryness and irritation of the eyes. This ophthalmic solution is indicated for the symptomatic treatment of dry eye syndrome, keratoconjunctivitis sicca, and other conditions causing ocular discomfort due to reduced tear production or excessive tear evaporation. Carboxymethylcellulose acts by forming a protective, viscous film over the ocular surface, enhancing moisture retention and providing prolonged relief from dryness, burning, and foreign body sensation. Lubistar-CMC Eye Drop is suitable for use in patients experiencing eye strain, exposure to wind or sun, or those who wear contact lenses and require additional lubrication. The formulation is preservative-free or contains minimal preservatives to reduce the risk of ocular irritation and hypersensitivity reactions. Administration involves instilling one or two drops into the affected eye(s) as needed, with frequency adjusted based on symptom severity and clinical response. Caution is advised in patients with hypersensitivity to any component of the formulation. Lubistar-CMC Eye Drop is intended for topical ophthalmic use only and should not be shared between individuals to prevent cross-contamination. Proper hygiene and adherence to recommended dosing are essential to ensure safety and efficacy.