Tobramycin ophthalmic is applied as a liquid solution or as an eye ointment, according to MedlinePlus. It is an antibiotic that treats bacterial eye infections and works by killing the bacteria causing the infection.
MedlinePlus states that the tobramycin ophthalmic eye drops are generally applied once within four to eight hours, while the ointment is typically applied two to four times daily. To apply the eye drops, a person must pull down the edge of the lower eyelid and position the dropper close to the eye without allowing it to touch the surface of the eye. While looking upward, he should squeeze the dropper gently to allow a single drop to fall into the pocket created by the lower eyelid. He must then remove his finger from the lower eyelid. The eye must be left closed for 2 to 3 minutes, followed by tipping the head down without blinking or squeezing the eyelids.
MedlinePlus recommends using a mirror or letting another person apply tobramycin ophthalmic ointment. A person must tilt his head forward a little and put the tube close to the eyelid without touching it. A small amount of ointment should be applied into the pocket made by the eye and the lower lid. While tilting the head downward, a person must close his eyes gently for one to two minutes to absorb the medication.