Hsgat Eye Drop contains Gatifloxacin 0.5% w/v, a broad-spectrum fluoroquinolone antibiotic indicated for the treatment of bacterial infections of the eye. Gatifloxacin exerts its antibacterial effect by inhibiting bacterial DNA gyrase and topoisomerase IV, enzymes essential for bacterial DNA replication, transcription, repair, and recombination, thereby leading to bacterial cell death. Hsgat Eye Drop is primarily prescribed for bacterial conjunctivitis, keratitis, and other superficial ocular infections caused by susceptible strains of gram-positive and gram-negative bacteria. The formulation is designed for topical ocular administration, ensuring rapid onset of action and targeted delivery to the site of infection. It is important to use the medication exactly as prescribed, typically instilling one or two drops into the affected eye(s) every two to four hours initially, then reducing frequency as symptoms improve. Patients should avoid touching the dropper tip to any surface to prevent contamination. Common side effects may include mild eye irritation, burning sensation, or redness, which are generally transient. Hsgat Eye Drop should be used with caution in patients with known hypersensitivity to fluoroquinolones. Proper adherence to the prescribed regimen is essential to prevent the development of antibiotic resistance and ensure effective resolution of ocular infections.