Opsion HA Eye Drop is used to treat dry eyes. Normally, your eyes produce enough natural tears to allow them to move easily and comfortably while also removing dust and other particles. If they do not generate enough tears, they may become dry, red, and painful. Dry eyes can be caused by wind, sun, warmth, computer use, and some drugs. Opsion HA Eye Drop lubricates your eyes and helps ease dryness and pain. This medication is safe to take and has few negative effects. If you have soft contact lenses, remove them before administering the drops.