What is the purpose of waiting 5 minutes between administering ophthalmic ointment to each eye?

The primary reason for waiting 5 minutes between administering ophthalmic ointment to each eye is to prevent the second dose from diluting the first. When medicating the eyes, if both applications are done too close together, the second application can wash away or dilute the medication from the first application, reducing its effectiveness. Allowing time between the two applications ensures that the first treatment has a chance to establish its therapeutic effect before introducing the second dose. This approach is crucial in ensuring that the patient receives the full benefit of the medication in each eye, thereby optimizing treatment outcomes.