If a patient is advised to instill 2 drops, how does this differ from instilling 1 drop?

When a patient is instructed to instill 2 drops instead of just 1 drop, the main difference lies in the quantity of medication being administered. By using 2 drops, the patient receives a greater volume of the medication, which may enhance its effectiveness in treating the condition for which it is prescribed. This might be particularly important in scenarios where a specific dosage is necessary for optimal therapeutic effect, such as in ophthalmic treatments where sufficient coverage of the eye may be critical.

In addition, instilling 2 drops can increase the likelihood of the drug reaching the intended site of action, especially if there is potential for the first drop to not provide adequate coverage. This difference is crucial in clinical practice, as it directly relates to the effectiveness of the treatment.

Instilling only during certain times of the day or only when needed does not apply to the comparison between 1 drop and 2 drops, as those considerations pertain to treatment schedules and indications rather than the actual dosage within a single application.