Eye drops (ophthalmic solutions) are widely used for various ocular conditions, ranging from allergies and dryness to infections and glaucoma. As these products are directly applied to the sensitive tissues of the eye, ensuring their safety and effectiveness is paramount. One critical aspect of quality control is the rigorous testing of eye drop products for sterility (USP ). Considering the recent eye drop product recalls involving contamination with drug-resistant Pseudomonas aeruginosa, it is important that manufacturers have a robust testing plan in place. We’ll explore the significance of such testing and why it plays a crucial role in maintaining eye health and preventing potential risks. Additional quality tests are also listed in USP Mucosal Drug products – Product Quality Tests