Discontinue use if patients experience headache, eye pain, vision changes, eye irritation, persistent redness or if condition worsens or persists. Do not use if soln changes color or becomes cloudy. May cause eye irritation & discolor soft contact lenses due to benzalkonium Cl content. Avoid contact w/ soft contact lenses. Remove contact lenses prior to application & wait at least 15 min before reinsertion. May affect ability to drive or use machines.