Why is pressure applied to the inner canthus after administering eye medication?

Applying pressure to the inner canthus after administering eye medication is done primarily to keep the medication's action localized. This technique helps to ensure that the medication stays in the eye and has maximum effectiveness where it is needed, rather than allowing it to drain away through the tear ducts into the nasal passages. By applying this gentle pressure, you prevent the medication from spreading too far and ensure that it targets the intended area, helping to maintain the therapeutic effect of the medication on the eye.

Focusing on the localized action is crucial in the administration of eye medications, as it enhances their efficacy and can reduce the need for larger doses or more frequent applications. This practice underscores the importance of technique in medication administration to optimize outcomes.