Detergent preservatives such as benzalkonium chloride (BAK) have been used for decades in many ophthalmic preparations owing to their known properties and efficacy. Chronic application of ...

Sodium chloride 2%, 5%; oph soln. 1–2 drops every 3–4 hrs or small amount of ointment 1 or more times daily. Reduce frequency as edema subsides. Transient stinging on application of soln.