Gaticoin HS eye drops are an antibiotic used to treat bacterial infections of the eye. It relieves the symptoms of infection by preventing the growth of pathogens. Microorganisms Gatiquin HS eye drops are for external use only. Take it in the dose and duration recommended by your doctor. Hold the dropper close to your eye, but do not touch it. Gently press the dropper and place the medicine inside the lower eyelid. Wipe off excess liquid. Even if you feel better, avoid skipping doses and complete the entire treatment.