Levobunolol hydrochloride is primarily used in the treatment of glaucoma and ocular hypertension. It functions as a non-selective beta-adrenergic blocker, effectively reducing intraocular pressure by decreasing the production of aqueous humor in the eye. This helps to prevent damage to the optic nerve and preserve vision. It is administered as an ophthalmic solution, typically applied as eye drops, making it a convenient option for patients. The medication is often prescribed for long-term management of these conditions, providing consistent pressure control when used as directed. Patients are advised to follow their healthcare provider's instructions carefully to achieve optimal results and minimize potential side effects.