Renso Eye Drops and Chloramphenicol Eye Drops are the same drug. The main ingredient of Renso Eye Drops is Chloramphenicol, and Renso is only the trade name, while the actual ingredient is Chloramphenicol. It is mainly used for the treatment of conjunctivitis, trachoma, keratitis and blepharitis. Patients may experience eye pain, vision changes, persistent redness or irritation after using the drug, which may also cause a bitter taste in the mouth, and for children, aplastic anemia may also occur. After use, the cap should be tightened and the bottle should not come into contact with the skin to avoid contamination. If symptoms do not improve after 3-4 days of use, stop use and consult a doctor. When the package is opened, it can be used for a maximum period of 4 weeks.