A nurse is instructing the caregiver of a toddler who has bacterial conjunctivitis and a new prescription for an ophthalmic ointment. Which of the following instructions should the nurse provide?

"Ask the child to look down before applying the ointment.”.

"Apply the ointment in a thin line into the conjunctival sac.”.

"Always wipe from the outer to the inner canthus when wiping away secretions.”.

"Use a sterile glove and applicator to apply the antibiotic ointment.”.