Loteprednol/Tobramycin - How often should you take this medication and for how long?

From prescribing information for Zylet (loteprednol etabonate 0.5% and tobramycin 0.3% ophthalmic suspension)

Directions for Use

SHAKE VIGOROUSLY BEFORE USING.
Apply one or two drops of Zylet into the conjunctival sac of the affected eye(s) every four to six hours.
During the initial 24 to 48 hours, the dosing may be increased, to every one to two hours. Frequency should be decreased gradually as warranted by improvement in clinical signs. Care should be taken not to discontinue therapy prematurely. Not more than 20 mL should be prescribed initially and the prescription should not be refilled without further evaluation.

PRECAUTIONS
General: For ophthalmic use only. The initial prescription and renewal of the medication order beyond 14 days should be made by a physician only after examination of the patient with the aid of magnification, such as slit lamp biomicroscopy and, where appropriate, fluorescein staining.
If signs and symptoms fail to improve after 2 days, the patient should be re-evaluated.
If this product is used for 10 days or longer, intraocular pressure should be monitored even though it may be difficult in children and uncooperative patients.
Fungal infections of the cornea are particularly prone to develop coincidentally with long-term local steroid application. Fungus invasion must be considered in any persistent corneal ulceration where a steroid has been used or is in use. Fungal cultures should be taken when appropriate.
As with other antibiotic preparations, prolonged use may result in overgrowth of nonsusceptible organisms, including fungi. If superinfection occurs, appropriate therapy should be initiated.
Cross-sensitivity to other aminoglycoside antibiotics may occur; if hypersensitivity develops with this product, discontinue use and institute appropriate therapy.