Optive Fusion UD is a preservative-free lubricating eye drop solution that comes in 30 single-use vials of 0.4ml each. Manufactured by Allergan, it provides relief from dry eye symptoms while being gentle on sensitive eyes due to its unit dose format. The UD (Unit Dose) format ensures sterility of each application and is ideal for those sensitive to preservatives. Each vial contains 0.4ml of solution and should be discarded after single use. The product helps relieve dry eye discomfort and can be used with contact lenses. Store at room temperature and keep out of reach of children. Do not use if the solution appears cloudy or the vial is damaged.